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2014 Vol. 35 Issue 2

2014 Vol. 35, No. 2

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Influences of Various Kinds of Nitrogen Fertilizer on the Nutritive Growth of Alder Trees
SU De-yao, KANG Ying, ZHENG Shao-wei, LI Yan-qiong, CHEN Jun-hua, GONG Gu-tang, MU Chang-long
2014, 35(2): 1-3,33. doi: 10.16779/j.cnki.1003-5508.2014.02.001
Abstract:
In this paper,three kinds of nitrogen fertilizer, namely, active carbon slow-release nitrogen fertilizer,normal slow-release nitrogen fertilizer and urea fertilizer,were used to conduct experiments on applicating fertilizers to different height-class alder trees, aiming to select the nitrogen fertilizer with the highest utilization ratio. At the same time,a description was made of the experimental process and results.
Research on the Effect of Applying the Eco-blanket to the Vegetation Restoration in Landslide Areas Caused by the Earthquake
JI Hui-juan, FU Zhi-hong, ZHANG Li, MA Wen-bao, HE Jian-she, LIU Xing-liang
2014, 35(2): 4-8. doi: 10.16779/j.cnki.1003-5508.2014.02.002
Abstract:
In order to study the effect of eco-blanket covering on the vegetation restoration,the eco-blanket is firstly applied to the gravel sediment accumulation area and sediment accumulation area in landslide areas caused by the earthquake. Under the different types of fertilizer concentration and eco-blanket combined mode,at the beginning of growing period,the initial germination time,height and coverage of herbs have no significant differences, while the initial germination time of Amorpha fruticosa has significant differences. At the end of growing period,the height and coverage of herbs have significant differences,the height and crown of Amorpha fruticosa also have significant differences, without finding the growth of tall fescue. On each eco-blanket,the effects of vegetation restoration of high concentration of fertilizer are the best; under the same concentration of fertilizer,the growth of plants is as follows:coconut fiber eco-blanket > straw + coconut fiber eco-blanket > straw eco-blanket. At the gravel sediment accumulation area,under the coconut fiber eco-blanket and fertilizer concentration of 80 g·m-2 combined mode,plants have a serious lodging phenomenon,while the lodging phenomenon is not found in the sediment accumulation area.
Genetic Test and Evaluation on Growth Traits of Nineteen Half-sib Families of Idesia polycarpa in the Seedling Stage
LUO Jian-xun, CHEN Jian-guo, GAO Jie, JIA Chen
2014, 35(2): 9-12. doi: 10.16779/j.cnki.1003-5508.2014.02.003
Abstract:
To study the growth rule of seedlings of Idesia polycarpa Maxim. and to promote the development and utilization,investigation and analysis were made of growth traits of seedlings of I. polycarpa. from nineteen different families. The results showed that there were major differences in growth traits of I. polycarpa among nineteen different families,and a wide range of variation and a abundant genetic variation existed in the height and ground diameter of seedlings,which was good for choosing fine famillies. According to the results of correlation analysis, significant positive correlations were found between the seedling height and the seedling ground diameter,and week positive correlations were found between the ground diameter and the root cap. The family heritability of seedling height, ground diameter and main root length was 0.94,0.87 and 0.91 respectively, all of them were mainly controlled by their genetic character and belonged to a strong addictive genetic degree. The family Longheng 20,Longheng 27 and Hanzhong 6 were selected as fast-growing and good-adapting families according to comprehensively considering the seedling height and ground diameter factors.
A Study of Measuring Carbon Sequestration of Pinus massoniana Forest Management Project in Wanzhou Disrict,Chongqing
MENG Xiang-jiang
2014, 35(2): 13-17. doi: 10.16779/j.cnki.1003-5508.2014.02.004
Abstract:
The carbon sequestration of Pinus massoniana Forest Management Project in Wanzhou District was measured. The results showed that the carbon sequestration of the baseline scenario was accumulated to 57 552 tC and the carbon sequestration of project scenario was cumulated to 180 572 tC, which was 3.13 times the baseline scenario. Project net carbon sequestration was 123 020 tC,which could be converted into 451 074 t CO2 equivalent,and the average annual amount of carbon sequestration was 2.89 t CO2-e per hectare. Through forest management,carbon storage could be effectively increased,and the capacity of carbon sequestration could be enhanced. It was of great significance for establishing the carbon sequestration benefit compensation mechanism,perfecting the carbon trade market,improving the ecological environment and tackling regional climate changes.
Urban Expansion's Impact on the Driving Force of Landscape Ecological Security Patterns in Chengdu
LONG Shi-liang, TANG Xiao-ming, ZHANG Hai-ou, LI Yan-qiong, CHEN Jun-hua, GONG Gu-tang, MU Chang-long, NIU Mu
2014, 35(2): 18-24. doi: 10.16779/j.cnki.1003-5508.2014.02.005
Abstract:
The forest ecosystem is characterized by strong ecological functions, its protection and restoration functions are an important means of improving macro-ecological environment. With the rapid economic development and urbanization process,the urban area has been expanded,and a large number of woodlands,wetlands have been exploited for other purposes. This trend has resulted in the constant changes of spatial distribution of the urban landscape,and undoubtedly brought an important impact on the regional ecological security pattern and macro-ecological environment. The study of urban expansion's impact on the driving force of landscape ecological security patterns in Chengdu City has shown that the main driving force of the urban landscape ecological security pattern change comes from the urban expansion. An endless struggle has been going between ecological security pattern and urban expansion,and human disturbance generates deep impact on the landscape ecological security pattern. Land use changes,urban expansion,as well as the non-rural population growth affect the entire landscape ecological security pattern changes directly or indirectly.
Comparative Research on Influcences of Different Application Methods and Concentrations of PP333 on the Growth and Development of Walnut Trees
PENG Hai-long, LAI Teng-yue, LIAO Yun-hong, PENG Xiu, LI Xiu-zhen, WANG Wei
2014, 35(2): 25-29. doi: 10.16779/j.cnki.1003-5508.2014.02.006
Abstract:
Combining different use modes and concentrations of PP333,and taking ‘Chuanzao’ series precocious offsprings as test materials,three kinds of treatments were conducted on precocious walnut trees, including leaf spraying,infusion,and soil application. Analysis was made of influences of different application methods and different concentrations on walnut tree crown,twig length,leaf weight,fruit setting rate, fruit dropping rate and unit projected area yield. The aim was to screen the suitable application mode and concentration of PP333,which could inhibit the walnut vegetative growth and increase the walnut production.
Cuttage Reproduction Experiments on Sladenia celastrifolia
XU Lin-hong, Li Si-guang, ZHAO Yong-hong, JIANG Yun-dong
2014, 35(2): 30-33. doi: 10.16779/j.cnki.1003-5508.2014.02.007
Abstract:
Cuttage experiments on Sladenia celastrifolia were implemented by use of different cuttage substrates,different hormones (rooting stimulants),different cuttage time,cuttage slips of different parts. The results showed that the most suitable cuttage substrate was river sand and perlite (4:1), and the rooting rate was 84%; the rooting stimulant-GGR6 with 0.01% concentration had the largest influence power on the rooting rate,the rooting rate reaching 96%; the most suitable cutting time was in March, the rooting rate was 91%; the optimum cuttage slips were dry germination branches,and their rooting rate was 95%, and the top branches of 1 year old were next and their rooting rate was 88%.
An Experimental Study of Tissue Culture of Chamelaucium uncinatum ‘Snow Flake’
LOU Li-hua, ZENG Jing, JIANG Hai-yan, YAN Qiao, WANG Zheng-chun
2014, 35(2): 34-36,56. doi: 10.16779/j.cnki.1003-5508.2014.02.008
Abstract:
As a new generation of woody cut flowers, C. uncinatum ‘Snow Flake’ has a high ornamental and economic value. Based on the study of tissue culture of ‘Snow Flake’,the aim of this experiment was to lay the foundation for Industrial production of ‘Snow Flake’. The results showed that 7 minutes were the best time to sterilize explants by using 0.1% HgCl2. MS1 + 6-BA1.0 mg·L-1 + IBA0.2 mg·L-1 + KT0.5 mg·L-1 was the optimum primary culture medium, the best subcultuer medium was WPM1 + 6-BA 1.0 mg·L-1 + IBA 0.2 mg·L-1 + GA3 1.5 mg·L-1,multiplication coefficient was 4.2,multiplication was 3~6. The most suitable rooting medium was 1/2MS2 + IBA0.2 mg·L-1 + 0.1 mg·L-1 GGR.
2014, 35(2): 37-38. doi: 10.16779/j.cnki.1003-5508.2014.02.009
Abstract:
Identification of Isoenzymes of Elm Plants
GU Ai-lian
2014, 35(2): 39-43. doi: 10.16779/j.cnki.1003-5508.2014.02.010
Abstract:
In this paper,polyacrylamide gel electrophoresis was used for analyzing and determing peroxidases in leaf blades of Ulmus pumila,Ulmus pumilavar,Ulmus laevis and Ulmus densa,and getting peroxidase bands of four elms. Then, the sequence analysis method was used to identificate the differences of four kinds of elms. At the same time,comparison was made among the shape characteristics of four kinds of elms,and their discrimination and classification work was also done.
Analysis of the Community Structure and Regeneration Status of Fagus pashanica on the Micang Mountain
LI Yan-qiong, ZHENG Shao-wei, GONG Gu-tang, LIU Xing-liang, MU Chang-long
2014, 35(2): 44-46. doi: 10.16779/j.cnki.1003-5508.2014.02.011
Abstract:
Relatively complete natural evergreen and deciduous broad-leaved mixed forest types of Fagus pashanica are found in medium mountainous zone in the northern margin of the Sichuan Basin. Studies were made of the community structure and status of Fagus pashanica on Micangshan Mountain. The results showed that ①Fagus pashanica canopy was neat, having tree layer, shrub layer, herb layer and the moss layer; Fagus pashanica was main dominant tree species. ②In Fagus pashanica natural forest communities, its growing season had warm and humid features, community phanerophytes had the largest distribution, accounting for 56.4%, followed by hemicryptophytes, accounting for 35.1%. ③ Fagus pashanica DBH and age classification showed a symmetrical distribution, Fagus pashanica seedling number per hectare was more than 2 800,displaying the stability of the community structure.
Process Analysis of the Landscape Fragmentation of Huangtuliang Panda Corridor Based on Landscape Ecology
Wang Han, Kuang Pei-gang, LI Yue, GUI Lin-hua
2014, 35(2): 47-51,84. doi: 10.16779/j.cnki.1003-5508.2014.02.012
Abstract:
Huangtuliang Panda Corridor is the critical area connected to the giant panda habitat of A population on the Minshan Mountain. Based on the theory of landscape ecology,the software FragStat 3.3 was used to analysis of giant panda habitat characteristics in the different periods (1975, 1992, 2010) and studies were made of landscape index,and the process of landscape fragmentation from two dimensions of patch types and landscape types. The results showed that the giant panda habitat fragmentation was very serious in the past 35 years.
Evaluation on Biological Invasion Risk of the Introduction of Vetiveria zizanioides in Chongqing Area
LI Bin, ZHOU Hong-bo, PENG Xiu, GENG Yang-hui
2014, 35(2): 52-56. doi: 10.16779/j.cnki.1003-5508.2014.02.013
Abstract:
In order to prevent detriments from the introduction of species, the ecological invasion risk should be analyzed and the corresponding control measures should be established after the introduction of species. In this article,through such methods as referring to information,field investigation and expert consultation,and by applying the invasion risk evaluation system of alien species and the invasion risk standard,analysis is made of the ecological invasion risk of introding Vetiveria zizanioides in chongqing area. The results have shown that Vetiveria zizanioides belongs to an alien species with a certain risk in Chongqing area,need to refer to more relevant information or take the precaution and control measures.
Evaluation Research on the Forestland Quality Rank of Shehong County Based on GIS
NI Jing, YANG Cun-jian, WU Yao
2014, 35(2): 57-61. doi: 10.16779/j.cnki.1003-5508.2014.02.014
Abstract:
Forestland is the carrier of forest resources and the basis of forestry development,and the forestland quality classification is an important index of quality analysis and evaluation. In combination with forestland protection and utilization planning in Shehong county of Sichuan province, and by using analytic hierarchy process method,the soil thickness,soil type,slope degree,slope,aspect,slope position and traffic location were chosen as the main 6 factors of classification of forestland quality grade,and a forestland subcompartment was chosen as the unit. Combined with the GIS spatial analysis method, the forestland were divided into Ⅰ, Ⅱ, Ⅲ, Ⅳ and Ⅴ grades, and their forestland area was 0, 44.22 hm2, 5 437.46 hm2,41 089.05 hm2,76.36 hm2, respectively accounting for 0,0.09%,11.66%,88.08% and 0.16% of the total forestland. This study had an important significance on forest protection and scientific,unified and reasonable management of forest resource.
The Present Situation and Recovery Strategy of Ecological Environments in the Dry Valleys in the Upper Reaches of the Minjiang River Area
CHEN Xiao-ping, YANG Su-xiang, HE Jian-she, DAI Ying, YANG Hua
2014, 35(2): 62-65. doi: 10.16779/j.cnki.1003-5508.2014.02.015
Abstract:
The dry valleys in the upper reaches of the Minjiang River are located in the transition zone between the Qinghai-Tibet Plateau and the Sichuan Basin. They have complex natural environments, vulnerable ecosystem,backward economic development,and diverse social cultures. Because of adverse natural environments and human interference,their original ecological environment becomes worse and worse, and brings about a series of ecological environmental problems, for example, vegetation degradation, and loss of biodiversity. In this paper,a detailed description is given of the present situation and reasons, and some scientific measures are put forward for the recovery of their ecological environment. This study has important theoretical and practical significance on the regional vegetation restoration and the improvement of ecological environments.
Dynamic analysis of Vegetation Biomass and Carbon Storage of Public Welfare Forests in Liandu District
CHEN Yan-fen
2014, 35(2): 66-69. doi: 10.16779/j.cnki.1003-5508.2014.02.016
Abstract:
Two detailed investigation were made of public welfare forest resouces in 1999 and 2008. In different forest types,on the basis of the area and volume dynamic change characteristics,the volume of biomass conversion factor method was used for calculating the public welfare forest biomass and carbon stock. The results showed that from 1999 to 2008, the per unit area biomass of public welfare forest increased from 72.33 t·hm-2 to 113.33 t·hm-2, the average annual growth rate was 4.91%; Total biomass increased from 253.33×104 t to 396.9×104 t, which had 143.60×104 t growth. Total carbon increased from 122.66×104 t to 198.47×104 t, having 75.81×104 t growth and 5.25% average annual growth. Through many years of establishing public welfare forest,its stand structure became gradually optimized,its biomass and carbon accumulation increased effectively, therefore its ecological function had a great improvement.
2014, 35(2): 70-73. doi: 10.16779/j.cnki.1003-5508.2014.02.017
Abstract:
A Study of Technology and Measures of Close-to-nature Management of Urban Forests——Taking Urban Forests in Zhangshu City as an example
HE Jian
2014, 35(2): 74-78. doi: 10.16779/j.cnki.1003-5508.2014.02.018
Abstract:
The urban forest,as a living infrastructure,is a dispensable index of measuring the level of civilization and the sustainable development ability of a city. Establishing a perfect ecological system of urban forests and implementing reasonable and effective close-to-nature management of urban forests play an important role in creating the urban forest. In this article,discussion is made on the close-to-nature management,its conceptual meaning,guiding theory and principles,technological range,contents,steps and measures. The focus is to expatiate the object and measures of the urban forest management in Zhangshu City, aiming to provide management techniques for urban forests under the guidance of an advanced concept.
The Influence of Using Snowmelt Agents on Garden Plants
WANG Xiao-peng, SUN Xin-xin
2014, 35(2): 79-81. doi: 10.16779/j.cnki.1003-5508.2014.02.019
Abstract:
In this paper,analysis is made of domestic current usage of snowmelt agents, a description is given of influences of the snowmelt agent on garden plants from several aspects and some measures are put forward for how to standardize the management and scientific use of snowmelt agents.
2014, 35(2): 82-84. doi: 10.16779/j.cnki.1003-5508.2014.02.020
Abstract:
An Investigation Report on the Development of Subsequent Industries After Returning Farmland to Forest in Huangjincao Village
JIAO Yang, CHEN Fu-qiong
2014, 35(2): 85-89. doi: 10.16779/j.cnki.1003-5508.2014.02.021
Abstract:
In this paper, based on analysis and investigation of subsequent related industry development present situation and existing problems after returning farmland to forest in Huangjincao Village of Xuanhan County and combined with the characteristics of its returning farmland to forest, some developmental directions and measures are put forward for making sure to consolidate results of its returning farmland to forest.
2014, 35(2): 90-91,94. doi: 10.16779/j.cnki.1003-5508.2014.02.022
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2014, 35(2): 92-94. doi: 10.16779/j.cnki.1003-5508.2014.02.023
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2014, 35(2): 95-96. doi: 10.16779/j.cnki.1003-5508.2014.02.024
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