Dynamic Variations of Landscape Pattern and the Landscape Ecological Functions in the Source Area of the Yellow River
黄河源区景观格局与生态功能的动态变化

The study of landscape heterogeneity is an important means to researching regional ecological processes. According to remote sensing data of 1970s, 1980s and 1990s, some representative quantitative indices of the landscape spatial structure and landscape heterogeneity were selected to study the changes in landscape ecological structure and landscape pattern in the source area of the Yellow River using FRAGSTATS calculation method. In recent 30 years the landscape spatial pattern in the area tended to become...