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川南毛竹林生态系统养分动态分析
引用本文:蒋俊明,刘大雷,范少辉,费世民,陈德松.川南毛竹林生态系统养分动态分析[J].南京林业大学学报(自然科学版),2010,34(2):31-36.
作者姓名:蒋俊明  刘大雷  范少辉  费世民  陈德松
作者单位:1. 中国林业科学研究院林业研究所,北京,100091;四川林业科学研究院,四川,成都,610081
2. 四川长宁县林业局,四川,长宁,614000
3. 国际竹藤网络中心,北京,100102
4. 四川林业科学研究院,四川,成都,610081
基金项目:“十一五”国家科技支撑计划(2006BAD03A15)
摘    要:以目标产量和现实产量为基础,分别计算了川南毛竹林生态系统中N、P、K、Ca、Mg、Si等养分年亏 损量。结果显示:(1)当年采伐量为22.5 t/hm2时,6种元素的养分输出总量为216.78 kg/hm2,其中N为 93.13 kg/hm2、Si为57.61 kg/hm2、K为38.04 kg/hm2、Ca为11.39 kg/hm2、Mg为8.33 kg/hm2,P为8.28 kg/hm2,采伐时若将竹叶归还林地,养分年总输出量将减少73.3 kg/hm2;(2)在现有的经营强度下(即年均 采伐产量为9.0 t/hm2)时,6种养分亏损总量为:7.96 kg/hm2,各元素亏损率的排序为:Si(29.91 %)、P (27.19 %)、N(22.97 %)、Mg(8.51 %)、K(7.60 %);(3)结合各养分在土壤中贮量及其亏损状况分析表明, 川南毛竹林地施用P肥对提高毛竹产量的效果最直接,但补充K、Si、Mg等养分是防止毛竹林地力衰退、维 持毛竹林经营可持续性的必要措施和手段。

关 键 词:毛竹林生态系统  养分平衡  亏损率  可持续经营  川南地区

Analysis of nutrient input and output in a Phyllostachys pubescens ecosystem of southern Sichuan province
JIANG Jun-ming,LIU Da-lei,FAN Shao-hui,FEI Shi-min,CHEN De-song.Analysis of nutrient input and output in a Phyllostachys pubescens ecosystem of southern Sichuan province[J].Journal of Nanjing Forestry University(Natural Sciences ),2010,34(2):31-36.
Authors:JIANG Jun-ming  LIU Da-lei  FAN Shao-hui  FEI Shi-min  CHEN De-song
Institution:1.Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China; 2.Sichuan Academy of Forestry, Chengdu 610081, China; 3.International Centre for Bamboo and Rattan, Beijing 100102, China; 4.Forest Enterprise of Changning County of Sichuan Province, Changning 614000, China
Abstract:The annual deficits of N, P, K, Ca, Mg and Si in a Phyllostachys pubescens ecosystem of southern Sichuan were calculated based on expected and realized yield in this paper. Results showed that: (1)With annual yield at 22.5 t/hm2, the total annual output of all six nutrients was 216.78 kg/hm2, of which contribution of N, Si, K, Ca, Mg and P were 93.13, 57.61, 38.04, 11.39, 8.33 and 8.28 kg/hm2 respectively, and the 73.3 kg/hm2 per annual would reduce nutrient loss through by returning bamboo leave back to th...
Keywords:Phyllostachys pubescens ecosystem  nutrient balance  deficit  sustainable management  southern Sichuan province  
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