澜沧江流域上、中、下游典型案例区景观格局对比分析

景观空间格局是进行流域环境资源研究的重要内容之一。通过在澜沧江流域云南段上中下游地区分别选取具有典型代表意义的案例区，运用空间分析手段获取各案例区的景观类型分布及数量，基此就各案例区的景观多样性、多项景观格局数量指标、分维数等进行对比分析。结果表明：在澜沧江流域云南段，总体上，上游和下游地区景观格局较中游区域状况好，特别是下游地区景观多样性极为丰富；另外，随着流域典型的南北方向流动，在不同区位的案例区，景观格局存在着明显的差异，造成该差异的原因，除特定的自然条件外，还与当地社会经济发展及人口的压力有着非常密切的关系。该研究成果为进行流域整体生态功能规划、流域生态环境管理建设以及流域整体开发与协调管理提供了基础研究信息。

The Comparison of Three Case Study Area on Landscape Structure of Lancang River Basin in Yunnan Province

Watershed landscape pattern is important of study basin's development and sustainable utilization of natural resources based on the environment.Lancang Rive Basin in Yunnan province is of many special and important characteristics.By selecting three case study areas in up\|stream,middle\|stream,down\|stream along with river basin,based on the theory of landscape ecology,the comparison and analysis are completed in three different cases in this paper.The results show that,in general,there are difference characteristics of landscape pattern in the different location along the River basin.Relatively,integrated quality of landscape of upstream and down stream is good than middle stream in Lancang River Basin.Especially in down stream area,there is a very good codition on its ecology richness and diversity index.One of the reason resulted out the difference in landscape along the river different location is its special natural condition.Another reasons dependence on condition of the local social,economy development,and the environment pressure of population.