基于GIS的土地利用与生态环境评价研究——以阳朔县为例

近年来，生态环境保护已成为当下可持续发展的重要议题。通过遥感影像土地利用分类与地理信息系统手段，提取桂林市下属阳朔县2000年、2008年和2016年的土地利用分布特征，计算土地利用景观格局指数、土地利用转换矩阵等，结合阳朔县生态系统服务价值，分析阳朔县土地利用现状、变化及其对生态环境的影响。结果表明：2000年到2016年阳朔县建设用地变化幅度最大，林地的变化幅度较小；在不同土地利用类型转换中，耕地、林地向建设用地转换较多，这是城市用地主要来源之一；2000年到2016年景观格局呈现由聚集向破碎化和多样化发展趋势；2000年到2016年间总的生态系统服务价值增加5 388万元，表明生态环境朝着健康、友好型方向发展。

Land use and ecological environment assessment based on GIS: A case study in Yangshuo county, Guangxi

In recent years, ecological environmental protection has become an important topic of sustainable development. This paper used the land use classification of remote sensing and geographic information system to extract the land use distribution characteristics of Yangshuo county in Guilin city in 2000, 2008 and 2016, calculated the land use landscape pattern index, land use conversion matrix, etc., combining Yangshuo County ecosystem service value, and analyzed the status and changes of land use and its impact on the ecological environment in Yangshuo county. The results showed that the construction land had the largest change and the change of forest land was small in Yangshuo county from 2000 to 2016; the conversion of cultivated land and forest land to construction land was more in the conversion of different land use types, which was one of the main sources of urban land use; the landscape pattern showed a trend from aggregation to fragmentation and diversification from 2000 to 2016; the total value of ecosystem services increased by 53.88 million yuan between 2000 and 2016, indicating that the ecological environment is moving towards a healthy and friendly direction.