期刊论文

Measuring the ecological impact domain of the lakes in Erhai Lake basin

中文

华中师范大学学报(自然科学版)

1000-1190

2015

49

1

147-152

10.19603/j.cnki.1000-1190.2015.01.025

国家水体污染控制与治理科技重大专项任务（2013ZX07105-005-04-02）；

本校为第一机构

湖泊是流域各类生态过程的重要起点,"从湖泊出发"是提升流域生态环境治理绩效的重要思路.该文综合考虑湖泊禀赋、空间距离、扩散介质等因素,构建了一个湖泊生态影响域测度模型,并以洱海流域为例,对其4个较大湖泊水体的生态影响范围进行测度分析.结果显示:4个湖泊对外生态过程受到的累计阻力呈辐射状向四周扩散,距湖越远阻力越大,影响强度越小;洱海的生态影响域面积最大,占据压倒性优势,茈碧湖、海西海、西湖的影响范围依次减小,彼此离散,且均处于洱海影响域包围之内;根据影响强度对洱海影响域进行分级、分区,发现其高、中、低三种类型的影响域面积依次增加,并在空间上呈现明显的环湖梯次分布特征...

Lakes are important starting points for all kinds of ecological processes in a lake basin.＂Focusing on the lakes＂is an important way to improve the performance of governing the ecological environment of the watershed.In this paper,we construct a model to measure the ecological impact domain of the lake by comprehensively considering the lake endowment,spatial distance,diffusion medium and other factors.Then,,we apply this model to measure the ecological impact domain of the four largest lakes in Erhai Lake Basin.The results show that：1）the ...