Analysis of Land Use/Cover Changes and Its Landscape Ecological Effects in Nujiang Watershed

作者：Zou Xiuping · 年份：2005 · 被引用次数：7 · 研究领域：Environmental Changes in China、Remote Sensing and Land Use、Environmental Quality and Pollution

Regional land use/cover changes are an important part of global change,and it directly impacts biological diversity worldwide,contributes to climate change,and affects the ability of biological systems to support human needs by altering ecosystem services.Nujiang watershed is the important region of global bio-diversity and ecological landscape reservation.It is very significant to research the change of land use and cover and its ecological effects in Nujiang watershed.Based on the GIS methods and landscape indices model,ecological environment effect that the regional land covers change produced in study period was analyzed.The conclusions include: land use/cover changes that urban and cultural residences,cultivated land and glass land obviously increase,while forest land showing a tendency to reduce in the watershed in 1985～2000 Reflects the quickening of the watershed urbanization process and trend of deterioration of the ecological environment.Land cover patch spatial pattern in the region has tended to become fragmented.On the whole landscape,the landscape heterogeneity is decreasing and the landscape evenness index is increasing,and the landscape stability is decreased.