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首页> 外文会议>International Workshop on Geographical Information System; 20070914-15; Beijing(CN) >Analysis of Land Use and Landscape Pattern Change Based on GIS——A Case Study of Yan'an City
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Analysis of Land Use and Landscape Pattern Change Based on GIS——A Case Study of Yan'an City

机译：基于GIS的土地利用与景观格局变化分析-以延安市为例

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摘要

Using GIS and landscape pattern theory this paper analyzes on the typical landscapes, the temporal-spatial feature of land use dynamic change and their ecological conditions in Yan'an city, based on the translated data from remote sensing images in 1985, 1996 and 2000. The results indicate that in the past 15 years, the farmland, grassland, water body and build-up areas had a tendency of increase, while the woodland decreased and the bared land increased;with the help of the project of "Beautifying the Mountains and Rivers" which begun in 1997 in Yan'an, the landscape ecosystems began to be rehabilitated and reconstructed, the area of bared land and the losing rate of woodland became smaller. The results also show that the landscape structure changed dramatically, the landscape heterogeneity and landscape diversity increased, and the landscape was getting more and more balanced; while the water and soil conservation countermeasures have been working well in recent years, more farmland had changed to grassland and woodland during 1996 to 2000, the largest patch index (LPI) of the dominant kind of land use increased and the landscape diversity decreased.
机译：运用GIS和景观格局理论，基于1985年，1996年和2000年遥感影像的转换数据，分析了延安市典型景观，土地利用动态变化的时空特征及其生态条件。结果表明，在过去的15年中，在“美化山水”项目的帮助下，耕地，草地，水体和集水区都有增加的趋势，林地减少，裸地增加。 1997年始于延安的“河流”，景观生态系统开始得到修复和重建，裸露土地面积和林地流失率变小。研究结果还表明，景观结构发生了巨大变化，景观异质性和景观多样性增加，景观越来越平衡。尽管近年来水土保持措施一直行之有效，但从1996年到2000年，更多的耕地变成了草地和林地，占主导地位的土地利用的最大斑块指数（LPI）增加了，景观多样性却减少了。

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