黑河源区景观格局空间变化分析

Landscape Pattern Analysis of the Source of Heihe

本文以黑河上游野牛沟河为研究区,利用1987年、2006年两个时相的Landsat-5 TM数据,结合植被类型图、SRTM高程数据、1:5万地形图等数据,获取了该区13类地物类型。从斑块类型水平指数和景观水平指数两个方面对研究区景观格局进行研究。结果表明:①草地是研究区的主要优势类型,其次是湿地和裸岩石砾地,人类活动及环境因素导致了景观斑块总面积的波动和分维数的减少。②景观破碎度和景观形状指数的增加,说明景观容易受到人类活动的影响。

This paper took the Yeniugou River as research area which is in the upper Reaches of Hei river, obtained 13 categories of landscape types in the zone by using 1987 and 2006 Landsat-5 TM data, combined with vegetation chart, DEM elevation data, l： 50,000 topographic map, etc. Study area are studied from two aspects of the landscape pattern. The result shows that： （1）Grass is the main feature type in the study area, followed by wetlands and barren lands. （2）The increasing of landscape fragmentation and landscape shape index indicates that the landscape is easily influenced by human activities.