YOU Zhen,LI Zhan-bin,YUAN Qiong,et al.Study on the Threshold of Vegetation Coverage in Arid Area[J].Research of Soil and Water Conservation,2005,12(03):88-90.
干旱区植被覆盖度的建设阈值分析
- Title:
- Study on the Threshold of Vegetation Coverage in Arid Area
- Keywords:
- the coverage allowed by ecology; the coverage demanded by ecology; the coverage allowed by economy; the optimal solution in economy; the optimal solution in ecology
- 分类号:
- X171.1
- 摘要:
- 通过对已有的关于植被覆盖度的概念进行分析比较，提出几个新的植被建设覆盖度阈值生态允许覆盖度、生态要求覆盖度和经济允许覆盖度，并给出了它们的计算方法。尤为重要的是，提出了当经济与生态发生矛盾时，最佳覆盖度在不同情况下分别取生态最优解和经济最优解。当生态允许覆盖度小于生态要求覆盖度时，最佳覆盖度为生态允许覆盖度；当生态要求覆盖度大于经济允许覆盖度时，最佳覆盖度为经济最优解；当生态要求覆盖度小于经济允许覆盖度时，最佳覆盖度为生态最优解。最后给出了生态最优解和经济最优解的计算方法。
- Abstract:
- By analyzing and comparing several concepts about vegetation coverage given by other specialists, several new threshold of vegetation coverage are put forward:the coverage allowed by ecology, the coverage demanded by ecology and the coverage allowed by economy, then the methods are given to calculate. Especially when there are conflict between ecology and economic, the optimal solution in ecology and the optimal solution in economy should be applied by different condition. When the coverage allowed by ecology is smaller than the coverage demanded by ecology, the optimal coverage is the coverage allowed by ecology; when the coverage demanded by ecology is bigger than the coverage allowed by economy, the optimal coverage is the optimal solution in economy; when the coverage demanded by ecology is smaller than the coverage allowed by economy, the optimal coverage is the optimal solution in ecology. In the end, the method is given to calculate the optimal solution in economy and the optimal solution in ecology.
参考文献/References:
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备注/Memo
收稿日期:2004-12-28;改回日期:。
基金项目:国家自然科学基金项目“坡面径流侵蚀输沙动力过程实验研究”（40371075）；黄河水利委员会“十五”重大治黄科技项目“大理河流域水土保持生态工程建设的减沙作用研究（2002SZ08）；“十五”国家科技攻关（2001BA606A-04）
作者简介:游珍（1977- ），女，博士研究生，主要研究方向为土壤侵蚀与环境变化。