| 农林生态系统中营养元素N、P、K流动的网络分析 |
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| 引用本文： | 韩博平,吴刚.农林生态系统中营养元素N、P、K流动的网络分析[J].生态学杂志,1996,7(1):19-22. |
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| 作者姓名： | 韩博平 吴刚 |
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| 作者单位： | 中山大学生物系, 广州 510275;
2. 中国科学院生态环境研究中心, 北京 100085 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 对农林业系统沙兰杨-小麦-玉米群落类型中N、P、K流动网络分析表明,系统中N、P、K的循环指数分别为0.071、0.039、0.139,均小于传统的循环系数(CC等于回归量/吸收量),而在群落中的总滞留时间分别为22.41、79.72、26.57a.
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| 关 键 词： | 农林生态系统 生态网络 循环指数 滞留时间 |
| 收稿时间： | 1995-03-03 |
Network analysis of N,P and K flows in an agroforestry ecosystem |
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| Han Boping,Wu Gang.Network analysis of N,P and K flows in an agroforestry ecosystem[J].Chinese Journal of Ecology,1996,7(1):19-22. |
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| Authors: | Han Boping Wu Gang |
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| Institution: | 1. Zhongshan University, Cuangzhou 510275;
2. Research Center for Eco-Environmental Science, Academia Sinica, Beijing 100085 |
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| Abstract: | A network analysis of N,P and K flows in Populus/Euramericana-Triticum sativum-Zea mays agroforestry ecosystem shows that the cycling index(CI)of N, P and K in the ecosystem is respectively 0.071,0.039 and 0.139,which is smaller than their cycling coefficiency(vCC),being 0.078,0.055 and 0.15,respectively.The total retention time of N,P and K in the ecosystem is 22.41,79.72 and 26.57 years,respectively. |
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| Keywords: | Agroforestry ecosystem Econetwork Retention time Cycling index |
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