2013 Vol. 34 Issue 2
2013 Vol. 34, No. 2
Export
Citation
2013, 34(2): 1-9,19.
doi: 10.16779/j.cnki.1003-5508.2013.02.001
Abstract:
Farmyard-entertainment spots lying in criscross areas between town and country were a consequence that the adjustment of local culture brought about, and a kind of city forest that developed quickly. And plant landscapes constituted their important composition. The quality study of plant landscapes was less based on the landscape requirement analysis of participatory tourists, thus limiting the knowing of plant landscape atomizing for farmyard-entertainment spots. This paper dealt with the clustering and requirements of plant landscape in farmyard-entertainment spots in Chengdu City with a selection of Beihu, Sansheng Township and Nongke Village. Cluster analysis indicated that 14 kinds of plant landscapes were classified as Ficus virens and Cinnamomum pedunculatum community, Ficus microcarpa var. pusillifolia community, Elaeocarpus sylvestris community, Populus adenopoda and F. virens community, Phoebe zhennan community, Osmanthus fragrans community, Elm Bonsai community, Ginkgo biloba and Osmanthus fragrans community, Podocarpus macrophyllus community, F. virens community, C. pedunculatum community, Eriobotrya japonica community, Japanese apricot community, etc. AHP of satisfaction questionnaire demonstrated that plant landscapes and local flavour food had similar importance, but obviously lower than environment health conditions, and service quality, and yet higher than entertainment and transportation. Landscape tradeoff analysis indicated that the higher tourist ratio of media tradeoff index between 0.10~0.15, 0.15~0.20 respectively was 21.36% and 43.64%, and factors of age(below 18 years old and above 46 years old), gender(male and female), profession(retired persons and students), income level(4 000~5 000 Yuan per month), education background(master and doctor), consumption level(60-100 Yuan per day), potential consumption intention had a higher requirement for plant landscapes. Comprehensively, the farmyard-entertainment landscapes totally displayed an evenness phenomenon, and the prime factors influencing the tourist satisfaction of current farmyard-entertainment were environment health and service quality, but plant landscapes obviously affected the consumption limit.
Farmyard-entertainment spots lying in criscross areas between town and country were a consequence that the adjustment of local culture brought about, and a kind of city forest that developed quickly. And plant landscapes constituted their important composition. The quality study of plant landscapes was less based on the landscape requirement analysis of participatory tourists, thus limiting the knowing of plant landscape atomizing for farmyard-entertainment spots. This paper dealt with the clustering and requirements of plant landscape in farmyard-entertainment spots in Chengdu City with a selection of Beihu, Sansheng Township and Nongke Village. Cluster analysis indicated that 14 kinds of plant landscapes were classified as Ficus virens and Cinnamomum pedunculatum community, Ficus microcarpa var. pusillifolia community, Elaeocarpus sylvestris community, Populus adenopoda and F. virens community, Phoebe zhennan community, Osmanthus fragrans community, Elm Bonsai community, Ginkgo biloba and Osmanthus fragrans community, Podocarpus macrophyllus community, F. virens community, C. pedunculatum community, Eriobotrya japonica community, Japanese apricot community, etc. AHP of satisfaction questionnaire demonstrated that plant landscapes and local flavour food had similar importance, but obviously lower than environment health conditions, and service quality, and yet higher than entertainment and transportation. Landscape tradeoff analysis indicated that the higher tourist ratio of media tradeoff index between 0.10~0.15, 0.15~0.20 respectively was 21.36% and 43.64%, and factors of age(below 18 years old and above 46 years old), gender(male and female), profession(retired persons and students), income level(4 000~5 000 Yuan per month), education background(master and doctor), consumption level(60-100 Yuan per day), potential consumption intention had a higher requirement for plant landscapes. Comprehensively, the farmyard-entertainment landscapes totally displayed an evenness phenomenon, and the prime factors influencing the tourist satisfaction of current farmyard-entertainment were environment health and service quality, but plant landscapes obviously affected the consumption limit.
2013, 34(2): 10-15.
doi: 10.16779/j.cnki.1003-5508.2013.02.002
Abstract:
To explore the physiological adaptation mechanisms of Davidia involucrate to altitudes, studies were made of the relationship between pigment, anthocyanin, malondialdehyde, proline, superoxide dismutase, and UV-absorbing compounds contents of Davidia involucrata leaf blades and altitudes. The research results showed that chlorophyll a and b, carotenoids, MDA content would decrease with the increase of an altitude, the maximum value of chlorophyll a/b ratio occurred at an altitude of 1 650 m, while the maximum contents of MDA occurred at an altitude of 1 590 m; anthocyanins, UV-absorbing compounds and Pro contents would reduce after first increasing with increasing altitude. The maximum contents of anthocyanins and Pro occurred at an altitude of 1 650 m, while the maximum content of UV-absorbing compounds occurred at an altitude of 1 590 m; leaf superoxide dismutase (SOD) activity would gradually increase with altitude increasing. In general, when Davidia involucrate got stress from adverse environment at high altitudes, it could protect itself by internal regulation in a certain altitude range.
To explore the physiological adaptation mechanisms of Davidia involucrate to altitudes, studies were made of the relationship between pigment, anthocyanin, malondialdehyde, proline, superoxide dismutase, and UV-absorbing compounds contents of Davidia involucrata leaf blades and altitudes. The research results showed that chlorophyll a and b, carotenoids, MDA content would decrease with the increase of an altitude, the maximum value of chlorophyll a/b ratio occurred at an altitude of 1 650 m, while the maximum contents of MDA occurred at an altitude of 1 590 m; anthocyanins, UV-absorbing compounds and Pro contents would reduce after first increasing with increasing altitude. The maximum contents of anthocyanins and Pro occurred at an altitude of 1 650 m, while the maximum content of UV-absorbing compounds occurred at an altitude of 1 590 m; leaf superoxide dismutase (SOD) activity would gradually increase with altitude increasing. In general, when Davidia involucrate got stress from adverse environment at high altitudes, it could protect itself by internal regulation in a certain altitude range.
2013, 34(2): 16-19.
doi: 10.16779/j.cnki.1003-5508.2013.02.003
Abstract:
Phoebe zhennan is the precious broad-leaved timber species in the Sichuan Basin. Because of its long growth cycle, relative to other fast-growing timber species, its artificial cultivation and development are mostly done in spots at "Four Sides". Based on the requirements to ecological conditions and geographical distribution of Phoebe zhennan in Sichuan, the cultivated regions of Phoebe zhennan were divided into four divisions by use of cluster analysis of 38 stations and 9 climatic parameters, namely the most suitable zone(Ⅰ), suitable zone(Ⅱ), less suitable zone(Ⅲ) and fringe zone (Ⅳ). The most suitable zone and suitable zone were the main production area of Phoebe zhennan in Sichuan.
Phoebe zhennan is the precious broad-leaved timber species in the Sichuan Basin. Because of its long growth cycle, relative to other fast-growing timber species, its artificial cultivation and development are mostly done in spots at "Four Sides". Based on the requirements to ecological conditions and geographical distribution of Phoebe zhennan in Sichuan, the cultivated regions of Phoebe zhennan were divided into four divisions by use of cluster analysis of 38 stations and 9 climatic parameters, namely the most suitable zone(Ⅰ), suitable zone(Ⅱ), less suitable zone(Ⅲ) and fringe zone (Ⅳ). The most suitable zone and suitable zone were the main production area of Phoebe zhennan in Sichuan.
2013, 34(2): 20-23.
doi: 10.16779/j.cnki.1003-5508.2013.02.004
Abstract:
The 300 parts of VF germplasm materials in Sichuan and Chongqing areas were divided into 12 groups according to the population way, then by group clustering method, 5 candidates were collected (in the proportion of 30%, 25%, 20%, 15% and 10%) and their genetic diversity indexes were compared and the significance of their difference was tested. Finally 60 parts of key germ plasm were established under 20% of the sampling rate. Through testing the characteristic value coincidence of key germ plasma, the mean compliance rate, the standard deviation rate and the coefficient of variation were 98.07%, 94.12% and 95.70%, which showed that the primary key germ plasm was able to represent genetic variation of the total germplasm.
The 300 parts of VF germplasm materials in Sichuan and Chongqing areas were divided into 12 groups according to the population way, then by group clustering method, 5 candidates were collected (in the proportion of 30%, 25%, 20%, 15% and 10%) and their genetic diversity indexes were compared and the significance of their difference was tested. Finally 60 parts of key germ plasm were established under 20% of the sampling rate. Through testing the characteristic value coincidence of key germ plasma, the mean compliance rate, the standard deviation rate and the coefficient of variation were 98.07%, 94.12% and 95.70%, which showed that the primary key germ plasm was able to represent genetic variation of the total germplasm.
2013, 34(2): 24-26,105.
doi: 10.16779/j.cnki.1003-5508.2013.02.005
Abstract:
Antrodia subxantha was collected on the dead wood of the ancient cupressus funebri trees growing along the Cuiyun Gallery. It was identified as a new species named for Antrodia subxantha on morphology by professors He Xinsheng and Dai Yucheng. In order to prove it as a new species, for the first time, the morphology analysis and molecular techniques annlysis were adopted to establish ITS sequences. As a result, Antrodia subxantha was discovered to be able to be clustered as a new species, and its homologous similarity was 94% with Antrodia sitchensis. Finally, It was further proved as a new species on the ancient cupressus funebri trees in Sichuan, could cause the roots and trunk brown rot, eventually and led the trees to become dead.
Antrodia subxantha was collected on the dead wood of the ancient cupressus funebri trees growing along the Cuiyun Gallery. It was identified as a new species named for Antrodia subxantha on morphology by professors He Xinsheng and Dai Yucheng. In order to prove it as a new species, for the first time, the morphology analysis and molecular techniques annlysis were adopted to establish ITS sequences. As a result, Antrodia subxantha was discovered to be able to be clustered as a new species, and its homologous similarity was 94% with Antrodia sitchensis. Finally, It was further proved as a new species on the ancient cupressus funebri trees in Sichuan, could cause the roots and trunk brown rot, eventually and led the trees to become dead.
2013, 34(2): 27-35.
doi: 10.16779/j.cnki.1003-5508.2013.02.006
Abstract:
The method of ecological footprints was commonly used in the evaluation of the sustainable development degree in nations and regions. In this paper, the ecological footprints, ecological bearing capacity and ecological deficit were calculated. Their results showed that current Panzhihua ecological footprints and deficit presented an extended trend year by year generally from 2000 to 2009 and varied from 9.9539 hm2 to 16.6689 hm2 and from 1.0973 hm2 to 1.1683 hm2 respectively, which was 10 to 15 times higher than Ya'an, Chengdu, China in the likely years, and the society development of Panzhihua City was in strong unsustainable status. Analysis indicated that this current development status of Panzhihua City was the basic character of export-oriented cities with industrial resources, and was a subsystem in the composition of Region science development stratagem due to smaller spatial scale. In this paper, the way was proposed for consummating the degree of ecological architecture, enhancing the degree of economic supply and optimizing the degree of society requirement in order to realize science development stratagem in Panzhihua City.
The method of ecological footprints was commonly used in the evaluation of the sustainable development degree in nations and regions. In this paper, the ecological footprints, ecological bearing capacity and ecological deficit were calculated. Their results showed that current Panzhihua ecological footprints and deficit presented an extended trend year by year generally from 2000 to 2009 and varied from 9.9539 hm2 to 16.6689 hm2 and from 1.0973 hm2 to 1.1683 hm2 respectively, which was 10 to 15 times higher than Ya'an, Chengdu, China in the likely years, and the society development of Panzhihua City was in strong unsustainable status. Analysis indicated that this current development status of Panzhihua City was the basic character of export-oriented cities with industrial resources, and was a subsystem in the composition of Region science development stratagem due to smaller spatial scale. In this paper, the way was proposed for consummating the degree of ecological architecture, enhancing the degree of economic supply and optimizing the degree of society requirement in order to realize science development stratagem in Panzhihua City.
2013, 34(2): 36-39.
doi: 10.16779/j.cnki.1003-5508.2013.02.007
Abstract:
The field investigation and laboratory analysis were made of the resource of Camellia polyodonta in Ya'an. The results showed that there were 34 455 individuals of Camellia polyodonta distributed in the survey area of 236.1 hm2. But its production was low because of the extensive management. Based on the germplasm resource investigations of Camellia polyodonta in this area, three high quality individuals including Yahong 11, Yahong 15 and Yahong 17 were sifted through preliminary, repeated and final selection. Their fresh fruit weight ranged from 62.31 g~81.37 g; the fruit yield of unit crown area was 2.5 kg·m-2~3.0 kg·m-2; the fresh and dry seed-producing rates were 41.34%~43.17% and 25.14%~26.76% respectively; the dry seed had 73.88%~76.54% of kernel rates; the oil extraction rate in the kernel was 30.58%~32.46%. All indicants of excellent tree had reached the selection criteria of national plus tree of C. Oleifera. According to local resource advantage, some suggestions were put forward for the protection and sustainable utilization of Camellia polyodonta resources.
The field investigation and laboratory analysis were made of the resource of Camellia polyodonta in Ya'an. The results showed that there were 34 455 individuals of Camellia polyodonta distributed in the survey area of 236.1 hm2. But its production was low because of the extensive management. Based on the germplasm resource investigations of Camellia polyodonta in this area, three high quality individuals including Yahong 11, Yahong 15 and Yahong 17 were sifted through preliminary, repeated and final selection. Their fresh fruit weight ranged from 62.31 g~81.37 g; the fruit yield of unit crown area was 2.5 kg·m-2~3.0 kg·m-2; the fresh and dry seed-producing rates were 41.34%~43.17% and 25.14%~26.76% respectively; the dry seed had 73.88%~76.54% of kernel rates; the oil extraction rate in the kernel was 30.58%~32.46%. All indicants of excellent tree had reached the selection criteria of national plus tree of C. Oleifera. According to local resource advantage, some suggestions were put forward for the protection and sustainable utilization of Camellia polyodonta resources.
2013, 34(2): 40-42.
doi: 10.16779/j.cnki.1003-5508.2013.02.008
Abstract:
Sequoia sempervirens has been introduced for over 20 years in several provinces of Eastern and Southwestern China. In this study, investigations were made of the growth features of clonal seedlings of Sequoia sempervirens introduced in Miyi county, Sichuan province. The results displayed that the plants had a healthy growth, without diseases, insect pests, deadwoods or spike tops. There were more sprouts at the altitudes of 1 480 m~1 500 m. The data analysis result showed that the 9 years old Sequoia sempervirens had 3.35 m tree height and the average DBH of 5.52 cm at the altitude of 1 480 m~1 540 m. The best individual had the tree height of 8.4 m and DBH of 16.69 cm. Compared the growth condition in Miyi with that in Kunming, Guizhou and places of origin at United States, the results showed that the Sequoia sempervirens had a strong adaptability, and could grow in different introduced sites, but growing better in Kunming and Guiyang. According to the analysis of Sequoia sempervirens growth condition at each introduction point with different ecological environment (temperature, water and soil environment), the results showed that the Sequoia sempervirens could not adapt to drought environment, liked the soil in warm climate area with moderate rainfall and larger humidity, and it had a stronger insect resistance and could be introduced in south substropical areas such as the Anling River valleys and Miyi areas in Sichuan, and could be used as a garden greening and precious industrial timber species.
Sequoia sempervirens has been introduced for over 20 years in several provinces of Eastern and Southwestern China. In this study, investigations were made of the growth features of clonal seedlings of Sequoia sempervirens introduced in Miyi county, Sichuan province. The results displayed that the plants had a healthy growth, without diseases, insect pests, deadwoods or spike tops. There were more sprouts at the altitudes of 1 480 m~1 500 m. The data analysis result showed that the 9 years old Sequoia sempervirens had 3.35 m tree height and the average DBH of 5.52 cm at the altitude of 1 480 m~1 540 m. The best individual had the tree height of 8.4 m and DBH of 16.69 cm. Compared the growth condition in Miyi with that in Kunming, Guizhou and places of origin at United States, the results showed that the Sequoia sempervirens had a strong adaptability, and could grow in different introduced sites, but growing better in Kunming and Guiyang. According to the analysis of Sequoia sempervirens growth condition at each introduction point with different ecological environment (temperature, water and soil environment), the results showed that the Sequoia sempervirens could not adapt to drought environment, liked the soil in warm climate area with moderate rainfall and larger humidity, and it had a stronger insect resistance and could be introduced in south substropical areas such as the Anling River valleys and Miyi areas in Sichuan, and could be used as a garden greening and precious industrial timber species.
2013, 34(2): 43-47.
doi: 10.16779/j.cnki.1003-5508.2013.02.009
Abstract:
In this paper, taking arctic-alpine grassland in Litang County as the research object, the method of the spatial sequence instead of the tempoal sequence was used to analyze the changes of different desertified grassland types in soil physical properties in the area. Analysis results showed the total porosity and capillary porosity of soil had a decreasing trend in the desertification process, and the soil sand content increased continuously and the soil bulk density increased to different degrees. The intial stage of the arcticalpine grassland desertification in the northwestern Sichuan was the critical stage of desertification prevention and control because the variations of soil bulk density and porosity in the early desertification stage were greater than those in the desertification progress stage. The soil bulk density of the upper layer of the soil (0~20 cm deep) was less than that of the lower layer (20 cm~40 cm deep), but the total and capillary porosities of the upper layer of the soil were greater than those of the lower layer; Besides, the average sand content in natural grassland was relatively high, which indicated that the arctic-alpine grassland in northwest Sichuan had potential desertification material conditions.
In this paper, taking arctic-alpine grassland in Litang County as the research object, the method of the spatial sequence instead of the tempoal sequence was used to analyze the changes of different desertified grassland types in soil physical properties in the area. Analysis results showed the total porosity and capillary porosity of soil had a decreasing trend in the desertification process, and the soil sand content increased continuously and the soil bulk density increased to different degrees. The intial stage of the arcticalpine grassland desertification in the northwestern Sichuan was the critical stage of desertification prevention and control because the variations of soil bulk density and porosity in the early desertification stage were greater than those in the desertification progress stage. The soil bulk density of the upper layer of the soil (0~20 cm deep) was less than that of the lower layer (20 cm~40 cm deep), but the total and capillary porosities of the upper layer of the soil were greater than those of the lower layer; Besides, the average sand content in natural grassland was relatively high, which indicated that the arctic-alpine grassland in northwest Sichuan had potential desertification material conditions.
2013, 34(2): 48-51.
doi: 10.16779/j.cnki.1003-5508.2013.02.010
Abstract:
A new species of the genus Fargesia Franch. emend. Yi of Poacea comes from Northwestern Yunnan Province of China, and is described in this article. It is Fargesia xianggelilaensis Yi et L. Yang. The new species is similar to F. melanostachys (Hand. -Mazz.) Yi, but the internodes of its young culms have light yellow bristles; bamboo shoots are glabrouss; culm sheath is shorter than internode, and glabrous, oral setae are 3~8, ligule is truncate, sometimes triangular or curve, basically no decurrent. Leaf blades have 3-or 4-paired secondery veins, and transverse veins are clear, etc. Chinese name of Jingganghanzhu(井冈寒竹) should be Gelidocalamus stellatus Wen, being unsuitable to be named for Jinggangduanzhizhu(井冈短枝竹).
A new species of the genus Fargesia Franch. emend. Yi of Poacea comes from Northwestern Yunnan Province of China, and is described in this article. It is Fargesia xianggelilaensis Yi et L. Yang. The new species is similar to F. melanostachys (Hand. -Mazz.) Yi, but the internodes of its young culms have light yellow bristles; bamboo shoots are glabrouss; culm sheath is shorter than internode, and glabrous, oral setae are 3~8, ligule is truncate, sometimes triangular or curve, basically no decurrent. Leaf blades have 3-or 4-paired secondery veins, and transverse veins are clear, etc. Chinese name of Jingganghanzhu(井冈寒竹) should be Gelidocalamus stellatus Wen, being unsuitable to be named for Jinggangduanzhizhu(井冈短枝竹).
2013, 34(2): 52-53.
doi: 10.16779/j.cnki.1003-5508.2013.02.011
Abstract:
In this paper, researches were conducted on influence factors of Larix principis-rupprechtii disease index, and their correlation and regression reiationship with stand and sites. The results showed that the disease index and the density of Larix principis-rupprechtii displayed an extremely significant positive correlation, and yet the disease index had a significantly negative correlation with diameter at breast height and diversity index. Regression analysis showed that the influence of the density on the disease index was the greatest.
In this paper, researches were conducted on influence factors of Larix principis-rupprechtii disease index, and their correlation and regression reiationship with stand and sites. The results showed that the disease index and the density of Larix principis-rupprechtii displayed an extremely significant positive correlation, and yet the disease index had a significantly negative correlation with diameter at breast height and diversity index. Regression analysis showed that the influence of the density on the disease index was the greatest.
2013, 34(2): 54-56,73.
doi: 10.16779/j.cnki.1003-5508.2013.02.012
Abstract:
Taking the Jiangyou city as an example, the information of landuse types from RS image of the research area were extracted by using ERDAS 9.2 and ArcGIS 10.0 software. The landscape pattern index was calculated by using Fragstats 3.3 software. Then 7 indexes were selected, including landscape area(CA) in the study area, and the quantitative analysis was made of the spatial pattern of landuse landscape. The result revealed the characteristics of the study area that its forest had a wide distribution and its landscape shape was relatively regular.
Taking the Jiangyou city as an example, the information of landuse types from RS image of the research area were extracted by using ERDAS 9.2 and ArcGIS 10.0 software. The landscape pattern index was calculated by using Fragstats 3.3 software. Then 7 indexes were selected, including landscape area(CA) in the study area, and the quantitative analysis was made of the spatial pattern of landuse landscape. The result revealed the characteristics of the study area that its forest had a wide distribution and its landscape shape was relatively regular.
2013, 34(2): 57-61.
doi: 10.16779/j.cnki.1003-5508.2013.02.013
Abstract:
In this paper, a brief description is made of the afforestation and greening in the implementation of the ecological project in Aba Prefecture, and according to its site conditions and climatic conditions, an analysis is made of the experimental research and application prospects on the plastic film mulching technology in the afforestation in arid and semi-arid river valley areas, sunny slope and half sunny slope zones, cloudy slope and half cloudy slope zones.
In this paper, a brief description is made of the afforestation and greening in the implementation of the ecological project in Aba Prefecture, and according to its site conditions and climatic conditions, an analysis is made of the experimental research and application prospects on the plastic film mulching technology in the afforestation in arid and semi-arid river valley areas, sunny slope and half sunny slope zones, cloudy slope and half cloudy slope zones.
2013, 34(2): 62-65.
doi: 10.16779/j.cnki.1003-5508.2013.02.014
Abstract:
Studies were made of artificial breeding of Firmiana major in this paper. The results showed that the rooting percentage by the cutting propagation could reach 20%, and the survival percentage could reach 31.9% by the seminal propagation. Seedling raising by Firmiana major seeds could become a feasible method to propagate and expand its germplasm resources.
Studies were made of artificial breeding of Firmiana major in this paper. The results showed that the rooting percentage by the cutting propagation could reach 20%, and the survival percentage could reach 31.9% by the seminal propagation. Seedling raising by Firmiana major seeds could become a feasible method to propagate and expand its germplasm resources.
2013, 34(2): 66-68.
doi: 10.16779/j.cnki.1003-5508.2013.02.015
Abstract:
Studies were made of the seedling cultivation techniques of Nyssa yunnanensis and the growth characteristics of this species during the seedling period, including researches on seed collection, seed treatment, seedling raising, and growth observation during the seedling stage. The results showed that the seed of Nyssa yunnanensis did not have dormancy stage, the seeding work was suitable to be done right after the collection of seeds. The seeds began germinating one week after seeding, the seedling emergence occurred 25 days after seeding, and the proper way of storing seeds was to be mixed with sand. The seven month old seedlings could attain the size suitable for field planting, within one year after seeding, the seedlings showed the growth process of ‘slowness-quickness-slowness’, the growth peak of the seedling occurred from June to July, and within this fast-growing period, sufficient water and fertilizer should be applied to promote the growth of the seedlings.
Studies were made of the seedling cultivation techniques of Nyssa yunnanensis and the growth characteristics of this species during the seedling period, including researches on seed collection, seed treatment, seedling raising, and growth observation during the seedling stage. The results showed that the seed of Nyssa yunnanensis did not have dormancy stage, the seeding work was suitable to be done right after the collection of seeds. The seeds began germinating one week after seeding, the seedling emergence occurred 25 days after seeding, and the proper way of storing seeds was to be mixed with sand. The seven month old seedlings could attain the size suitable for field planting, within one year after seeding, the seedlings showed the growth process of ‘slowness-quickness-slowness’, the growth peak of the seedling occurred from June to July, and within this fast-growing period, sufficient water and fertilizer should be applied to promote the growth of the seedlings.
2013, 34(2): 69-73.
doi: 10.16779/j.cnki.1003-5508.2013.02.016
Abstract:
Based on establishing the urea solution concentration, Baume degree sequence value table of different temperature, and getting the Baume' degree sequence value of different urea solution by Baume' hydrometer, the urea solution concentration can be achieved by Baume' degree sequence value table. By means of this method, the accuracy was more than 89.95% as compared with Kjeldahl method, thus being able to offer reference for further improving the method of rapid determination of urea solution concentration. This method was easy to operate with less reagent consumption, high accuracy and rapid speed.
Based on establishing the urea solution concentration, Baume degree sequence value table of different temperature, and getting the Baume' degree sequence value of different urea solution by Baume' hydrometer, the urea solution concentration can be achieved by Baume' degree sequence value table. By means of this method, the accuracy was more than 89.95% as compared with Kjeldahl method, thus being able to offer reference for further improving the method of rapid determination of urea solution concentration. This method was easy to operate with less reagent consumption, high accuracy and rapid speed.
2013, 34(2): 74-76.
doi: 10.16779/j.cnki.1003-5508.2013.02.017
Abstract:
Neosinocalamus affinis is the main native bamboo species in Chengdu area and the plain of western Sichuan, and also is the largest species of bamboo resources in Sichuan province. At present the degradation of bamboo forests is a realistic problem to agroforestry. In order to increase the productivity of the bamboo forests and promote the industrial development, Chengdu Institute of Landscape Science has firstly imported the high-yield technique of cavity-injecting fertilization from Jiangxi province and applyied BNP to N. affinis strain plexus. The comparative experiment of the same concentration of BNP on N. affinis indicated that BNP could increase the production and rate of bamboo shoots and the production and rate and diameter of bamboo pole forming, and the effects on the former two were more remarkable than others.
Neosinocalamus affinis is the main native bamboo species in Chengdu area and the plain of western Sichuan, and also is the largest species of bamboo resources in Sichuan province. At present the degradation of bamboo forests is a realistic problem to agroforestry. In order to increase the productivity of the bamboo forests and promote the industrial development, Chengdu Institute of Landscape Science has firstly imported the high-yield technique of cavity-injecting fertilization from Jiangxi province and applyied BNP to N. affinis strain plexus. The comparative experiment of the same concentration of BNP on N. affinis indicated that BNP could increase the production and rate of bamboo shoots and the production and rate and diameter of bamboo pole forming, and the effects on the former two were more remarkable than others.
2013, 34(2): 77-80.
doi: 10.16779/j.cnki.1003-5508.2013.02.018
Abstract:
A series of experiments of Litsea coreana cutting propagation were performed to select the appropriate kind of growth regulators and concentration, the suitable month and length for the Litsea coreana cutting propagation in Zhongli, Ya'an. And researches were made into the influnce of different growth regulators on the length and number of the Litsea coreana saplings' roots. The research results have shown that the best comprehensive effect is ABT(500 mg·L-1), the most suitable cutting months are from Augest to October, and the most suitable cutting length is 5cm. Besides, the growth regulator of high concentration can promote the growth of root quantity, and the growth regulator of low concentration can promote the growth of root length.
A series of experiments of Litsea coreana cutting propagation were performed to select the appropriate kind of growth regulators and concentration, the suitable month and length for the Litsea coreana cutting propagation in Zhongli, Ya'an. And researches were made into the influnce of different growth regulators on the length and number of the Litsea coreana saplings' roots. The research results have shown that the best comprehensive effect is ABT(500 mg·L-1), the most suitable cutting months are from Augest to October, and the most suitable cutting length is 5cm. Besides, the growth regulator of high concentration can promote the growth of root quantity, and the growth regulator of low concentration can promote the growth of root length.
2013, 34(2): 81-84.
doi: 10.16779/j.cnki.1003-5508.2013.02.019
Abstract:
The experiment on preventing the cracking of fresh-eating golden silk jujubes has indicated that chemical spraying the field and plastic film covering can reduce the loss of dehiscent fruits in Deyang. Specifically, it is the most significant preventing cracking fruit effect to spray the liquid mixture of 20 mg·L-1 a-NAA and 15 mg·L-1 kinetin among plant growth regulators, and the cracking rate is 16.88%, which decreases by 24.35% as compared with the water control (41.23%). Meanwhile, Meigaimei is the best commodity chemical in reducing the cracking rate (16.98%), lowering 24.25% than the water control. However, the effect on preventing cracking of plastic film covering whose cracking rate is 16.39% reaches extremely significant level (p-0.01) as compared with the control, decreasing by 24.83% than the cracking rate of the control.
The experiment on preventing the cracking of fresh-eating golden silk jujubes has indicated that chemical spraying the field and plastic film covering can reduce the loss of dehiscent fruits in Deyang. Specifically, it is the most significant preventing cracking fruit effect to spray the liquid mixture of 20 mg·L-1 a-NAA and 15 mg·L-1 kinetin among plant growth regulators, and the cracking rate is 16.88%, which decreases by 24.35% as compared with the water control (41.23%). Meanwhile, Meigaimei is the best commodity chemical in reducing the cracking rate (16.98%), lowering 24.25% than the water control. However, the effect on preventing cracking of plastic film covering whose cracking rate is 16.39% reaches extremely significant level (p-0.01) as compared with the control, decreasing by 24.83% than the cracking rate of the control.
2013, 34(2): 85-90.
doi: 10.16779/j.cnki.1003-5508.2013.02.020
Abstract:
Forestry carbon sequestration has become a very important method in reducing greenhouse gases emission, and the estimation method of forest carbon sequestration is the basic content for our country in formulating strategy on how to deal with climate changes, performing the international convention, regularly working out and reporting greenhouse gas inventory. Therefore, it is urgent to carry out researches on the estimation method of forest carbon sequestration. From the perspective of estimation method of forest carbon sequestration, this paper analyzes the coupling of forest resource investigation and the estimation method of forest carbon sequestration in our country, and indicates that it is possible to apply forest resource investigation data into the estimation method of forest carbon sequestration. This paper also points out that the application of forest resource investigation data into the estimation method of forest carbon sequestration has such advantages as timely convenience and data reliability. Meanwhile, such preliminary information supplemented in forest resource investigation as soil organic carbon, forest management, varieties and hierarchy of trees, bushes and grass seeds, dead standing trees and fallen trees will meet the demands of estimating and monitoring of forest carbon sequestration.
Forestry carbon sequestration has become a very important method in reducing greenhouse gases emission, and the estimation method of forest carbon sequestration is the basic content for our country in formulating strategy on how to deal with climate changes, performing the international convention, regularly working out and reporting greenhouse gas inventory. Therefore, it is urgent to carry out researches on the estimation method of forest carbon sequestration. From the perspective of estimation method of forest carbon sequestration, this paper analyzes the coupling of forest resource investigation and the estimation method of forest carbon sequestration in our country, and indicates that it is possible to apply forest resource investigation data into the estimation method of forest carbon sequestration. This paper also points out that the application of forest resource investigation data into the estimation method of forest carbon sequestration has such advantages as timely convenience and data reliability. Meanwhile, such preliminary information supplemented in forest resource investigation as soil organic carbon, forest management, varieties and hierarchy of trees, bushes and grass seeds, dead standing trees and fallen trees will meet the demands of estimating and monitoring of forest carbon sequestration.
2013, 34(2): 91-94.
doi: 10.16779/j.cnki.1003-5508.2013.02.021
Abstract:
Associated with the advantages of natural, social and economical conditions and the establishment of forest industry system, healthy developing the follow-up industry of the Defarming-and-reafforestation Program is the key to consolidate achievements of this program in Chengdu City. Through investigating the typical measures of increasing peasants' income on the follow-up industry development of the Defarming-and-reafforestation Program in Chengdu, the acquired achievements were affirmed. Meanwhile, the main problems were pointed out and the ideas of further consolidating achievements of this program were put forward.
Associated with the advantages of natural, social and economical conditions and the establishment of forest industry system, healthy developing the follow-up industry of the Defarming-and-reafforestation Program is the key to consolidate achievements of this program in Chengdu City. Through investigating the typical measures of increasing peasants' income on the follow-up industry development of the Defarming-and-reafforestation Program in Chengdu, the acquired achievements were affirmed. Meanwhile, the main problems were pointed out and the ideas of further consolidating achievements of this program were put forward.
2013, 34(2): 95-97.
doi: 10.16779/j.cnki.1003-5508.2013.02.022
Abstract:
The forestry property rights mortgage loan is a product of forest right system reform, and is also an important way of stimulating the forest property value and promoting the forestry financing development. In this paper, analysis is made of the situation and problems existing in forest tenure mortgage loan in Liangshan Prefecture. And some suggestions are proposed for forest tenure mortgage loan.
The forestry property rights mortgage loan is a product of forest right system reform, and is also an important way of stimulating the forest property value and promoting the forestry financing development. In this paper, analysis is made of the situation and problems existing in forest tenure mortgage loan in Liangshan Prefecture. And some suggestions are proposed for forest tenure mortgage loan.
2013, 34(2): 98-101.
doi: 10.16779/j.cnki.1003-5508.2013.02.023
Abstract:
Based on Investigations of the present situation of wild animal and plant resonrces in Sichuan Provincial Baiyang Nature Reserve influenced by Pingdougou hydropower station, analysis and assessment were made of the impacts which the wild animal and plant resources in Reserve might meet with because of the building of the hydropower station, and some measures were put forward to reduce the negative influences on wild animal and plant resources.
Based on Investigations of the present situation of wild animal and plant resonrces in Sichuan Provincial Baiyang Nature Reserve influenced by Pingdougou hydropower station, analysis and assessment were made of the impacts which the wild animal and plant resources in Reserve might meet with because of the building of the hydropower station, and some measures were put forward to reduce the negative influences on wild animal and plant resources.
2013, 34(2): 102-105.
doi: 10.16779/j.cnki.1003-5508.2013.02.024
Abstract:
In this article, a brief description is given of the basic overview of the Canadian policy mechanism in response to global climate changes and its forest carbon accounting mode(CBM-CFS3), and some salutary lessons are put forward according to Sichuan Forestry Carbon Accounting research and establishment.
In this article, a brief description is given of the basic overview of the Canadian policy mechanism in response to global climate changes and its forest carbon accounting mode(CBM-CFS3), and some salutary lessons are put forward according to Sichuan Forestry Carbon Accounting research and establishment.
2013, 34(2): 106-108.
doi: 10.16779/j.cnki.1003-5508.2013.02.025
Abstract:
Base on the data from seedling raising and forestation researches on Podocarpus neriifolius, this paper summarized the cultivation techniques, such as seedlings cultivation, plantation and management of Podocarpus neriifolius.
Base on the data from seedling raising and forestation researches on Podocarpus neriifolius, this paper summarized the cultivation techniques, such as seedlings cultivation, plantation and management of Podocarpus neriifolius.
2013, 34(2): 109-110,84.
doi: 10.16779/j.cnki.1003-5508.2013.02.026
Abstract:
