• 研究报告 •

石羊河流域土地利用类型景观异质性

1. 1西北师范大学地理与环境科学学院| 兰州 730070；2中国科学院寒区旱区环境与工程研究所| 兰州 |730000
• 出版日期:2010-04-09 发布日期:2010-04-09

Landscape heterogeneity of land use types in Shiyang River basin.

WEI Wei1, ZHAO Jun1, WANG Xu-feng2

1. 1College of Geographical and Environment Science, Northwest Normal University, Lanzhou 730070, China|2Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China
• Online:2010-04-09 Published:2010-04-09

Abstract: With the support of GIS technology and taking the TM/ETM remote sensing images as the data source, 14 types of landscapes in Shiyang River basin were obtained by using the artificial interpretation method. A series of other data such as digital elevation model (DEM), vegetation maps, and land use maps were used, and the theories and methodologies of landscape ecology as well as the landscape spatial pattern index were adopted to analyze the landscape heterogeneity of desert and oasis ecosystems in Shiyang River basin. Cropland, woodland, grassland, and sandy land were the main landscape types and structural elements in the basin, with an average relative frequency of >42%. In desert landscape ecosystem, the matrix of sandy land was of heterogeneity in homogenization direction, while in oasis landscape ecosystem, the matrix of woodland, grassland, and cropland  was of heterogeneity in heterogenization direction. The relative frequency of river system as a corridor was very small in both desert and oasis landscape systems. The matrix of patch and corridor displayed heterogeneity in heterogenization directions. This study would be helpful to the monitoring of land use change and environmental change in arid interior region.