不同幼龄巨桉生物量及主要营养元素分配

龙汉利; 郭洪英; 辜云杰

doi:10.16779/j.cnki.1003-5508.2015.02.003

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不同幼龄巨桉生物量及主要营养元素分配

龙汉利 , 郭洪英 , 辜云杰

文章导航 > 四川林业科技 > 2015 > 36(2): 15-19

龙汉利, 郭洪英, 辜云杰. 不同幼龄巨桉生物量及主要营养元素分配[J]. 四川林业科技, 2015, 36(2): 15-19. doi: 10.16779/j.cnki.1003-5508.2015.02.003

引用本文:

龙汉利, 郭洪英, 辜云杰. 不同幼龄巨桉生物量及主要营养元素分配[J]. 四川林业科技, 2015, 36(2): 15-19. doi: 10.16779/j.cnki.1003-5508.2015.02.003

LONG Han-li, GUO Hong-ying, GU Yun-jie. Distribution of the Biomass and Main Nutrient Elements of Different Young Plantations of Eucalyptus grandis[J]. Journal of Sichuan Forestry Science and Technology, 2015, 36(2): 15-19. doi: 10.16779/j.cnki.1003-5508.2015.02.003

Citation:

LONG Han-li, GUO Hong-ying, GU Yun-jie. Distribution of the Biomass and Main Nutrient Elements of Different Young Plantations of Eucalyptus grandis[J]. Journal of Sichuan Forestry Science and Technology, 2015, 36(2): 15-19. doi: 10.16779/j.cnki.1003-5508.2015.02.003

不同幼龄巨桉生物量及主要营养元素分配

doi: 10.16779/j.cnki.1003-5508.2015.02.003

详细信息

四川省林业科学研究院，四川成都 610081

作者简介:
龙汉利(1959-),四川广安人,研究员,主要从事森林培育工作。

基金项目:
省级财政专项自列项目,速生用材林复层林经营技术研究(ZL2014-13)。
中图分类号: S722.3

Distribution of the Biomass and Main Nutrient Elements of Different Young Plantations of Eucalyptus grandis

More Information

Sichuan Academy of Forestry, Chengdu 610081, Sichuan, China

摘要: 通过对四川双流县4a和5a生巨桉人工林的主要营养元素含量和分配及生物量分配的研究,结果表明:巨桉4a巨桉标准木全株鲜重达到311.24 kg,5a巨桉标准木全株鲜重达到484.02 kg,从两种林龄巨桉生物量的分配看,均为树干 > 树皮或大枝 > 小枝 > 叶 > 果实;两种林龄巨桉单株营养元素含量在不同器官的分配规律基本一致,均为树叶 > 果实 > 大枝或小枝 > 树皮 > 树干;从营养元素和有机质在树干的分配来看,N、P、K、Mg含量基本呈现随着树干高度而增加,有机质含量树干中部最高,树干越高有机质含量越低,Ca含量树干基部最高,中部最低;从巨桉人工林营养元素积累与分配看,两种林龄巨桉人工林营养元素积累量均表现一致规律,均为N最多,其中4 a生N含量积累为637.32 kg·ha^-2,5 a生N含量积累为1 134.17 kg·ha^-2,其次为Ca、K、Mg,P积累最低。
- 巨桉;
- 生物量;
- 营养元素;
- 积累与分配
Abstract: Studies were made of the distribution of main nutrient elements and biomass of the young Eucalyptus grandis plantation in Shuangliu county in Sichuan province. The results showed that the whole plant fresh weight of the 4-year-old Eucalyptus grandis standard wood was 311.24 kg,while the 5-year-old was 484.02 kg. The ranked order of the biomass distribution of two kinds of Eucalyptus grandis plantation was trunk > bark or big branch > branchlet > leaf > fruit. The distribution regularity of nutrient element content in different organs of the two kinds of Eucalyptus grandis plantations. And its ranked order was leaf > fruit > big branch or branchlet > bark > tree trunk. From the perspective of nutrients and organic matter distribution in the trunk,N,P,K,Mg content presented basically increasing with the trunk height. Organic matter content was the highest in central trunk,while organic matter content of the trunk decreased when the tree height increased. The Ca content in stem base was the highest and the lowest in central trunk. From the aspects of Eucalyptus grandis plantation nutrient accumulation and distribution,the nutrient elemnet accumulation of two kinds of Eucalyptus grandis plantation was proved to be consistent. N accumulation was the highest in the two kinds of plantations,followed by the Ca,K,Mg,P. N content accumulation of four years old Eucalyptus grandis plantation was 637.32 kg·hm^-2,while the five years old Eucalyptus grandis plantation was 1 134.17 kg·hm^-2.
- Eucalyptus grandis;
- biomass;
- nutrient elemnet;
- accumulation and distribution

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不同幼龄巨桉生物量及主要营养元素分配

doi: 10.16779/j.cnki.1003-5508.2015.02.003

四川省林业科学研究院，四川成都 610081

作者简介:
龙汉利(1959-),四川广安人,研究员,主要从事森林培育工作。

收稿日期: 2015-01-02

基金项目:

省级财政专项自列项目,速生用材林复层林经营技术研究(ZL2014-13)。

中图分类号: S722.3

关键词:

摘要: 通过对四川双流县4a和5a生巨桉人工林的主要营养元素含量和分配及生物量分配的研究,结果表明:巨桉4a巨桉标准木全株鲜重达到311.24 kg,5a巨桉标准木全株鲜重达到484.02 kg,从两种林龄巨桉生物量的分配看,均为树干 > 树皮或大枝 > 小枝 > 叶 > 果实;两种林龄巨桉单株营养元素含量在不同器官的分配规律基本一致,均为树叶 > 果实 > 大枝或小枝 > 树皮 > 树干;从营养元素和有机质在树干的分配来看,N、P、K、Mg含量基本呈现随着树干高度而增加,有机质含量树干中部最高,树干越高有机质含量越低,Ca含量树干基部最高,中部最低;从巨桉人工林营养元素积累与分配看,两种林龄巨桉人工林营养元素积累量均表现一致规律,均为N最多,其中4 a生N含量积累为637.32 kg·ha^-2,5 a生N含量积累为1 134.17 kg·ha^-2,其次为Ca、K、Mg,P积累最低。

English Abstract

Distribution of the Biomass and Main Nutrient Elements of Different Young Plantations of Eucalyptus grandis

Sichuan Academy of Forestry, Chengdu 610081, Sichuan, China

Received Date: 2015-01-02

Keywords:

Abstract: Studies were made of the distribution of main nutrient elements and biomass of the young Eucalyptus grandis plantation in Shuangliu county in Sichuan province. The results showed that the whole plant fresh weight of the 4-year-old Eucalyptus grandis standard wood was 311.24 kg,while the 5-year-old was 484.02 kg. The ranked order of the biomass distribution of two kinds of Eucalyptus grandis plantation was trunk > bark or big branch > branchlet > leaf > fruit. The distribution regularity of nutrient element content in different organs of the two kinds of Eucalyptus grandis plantations. And its ranked order was leaf > fruit > big branch or branchlet > bark > tree trunk. From the perspective of nutrients and organic matter distribution in the trunk,N,P,K,Mg content presented basically increasing with the trunk height. Organic matter content was the highest in central trunk,while organic matter content of the trunk decreased when the tree height increased. The Ca content in stem base was the highest and the lowest in central trunk. From the aspects of Eucalyptus grandis plantation nutrient accumulation and distribution,the nutrient elemnet accumulation of two kinds of Eucalyptus grandis plantation was proved to be consistent. N accumulation was the highest in the two kinds of plantations,followed by the Ca,K,Mg,P. N content accumulation of four years old Eucalyptus grandis plantation was 637.32 kg·hm^-2,while the five years old Eucalyptus grandis plantation was 1 134.17 kg·hm^-2.