岩溶地区生态系统养分平衡研究

详细信息

刊出日期: 2001-02-25

THE NUTRIENT BALANCE OF THE ECOSYSTEM IN KARST AREA

Publish Date: 25 February 2001

摘要: 以岩溶地区生态系统中养分储存和运移为中心,综合研究了矿物分化、大气降水而引起的养分输入,淋溶流失、水土流失造成的养分输出,以及与生物导致的养分内部循环之间的相互作用和相互联系;讨论了岩溶生态系统养分的流入、保持和流失之间的平衡,并以桂林丫吉村岩溶试验场为例建立系统内各养分体系之间的反馈网络模型。
- 岩溶 /
- 生态系统 /
- 养分 /
- 反馈网络模型
Abstract: Under the combined influence of many environmental factors, the nutrient flow and circulation of ecosystem is quite complex.In this paper, the authors synthetically studied the interaction and interrelation between the nutrient input due to mineral weathering and atmospheric precipitation,the nutrient output due to eluviation and erosion,and the inner circulation because of biological agents. The nutrient balance among input,output and conservation was discussed in a systematic method.In the end, the feedback network model of Experimental Site——Yajiecun Site in Guilin city which indicates the interaction and interrelation of different nutrient components was set up. The network model conduce to restore ecosystem,reasonable use land and develop agriculture in karst areas.