基于GIS的合肥市土地利用变化及生态环境分析

Analysis of Land Use Change and Ecological Environmentin Hefei Municipality Based on GIS

为了给合肥市生态环境改善提供科学依据.利用合肥市2000,2010,2020年3期土地利用数据,根据土地利用转移矩阵、区域生态环境质量指数等来进行土地利用变化分析.结果表明:在过去20年间,耕地面积一直占68%以上,水域面积提高8.99%,湿地有所下降,人造地表面积上升.生态环境质量指数总体呈现上升趋势,说明政府实施退耕还林等改善生态环境政策取得了成效.而在部分区域存在因草地损失而导致的生态问题.

In order to provide scientific basis for the improvement of the ecological environment in Hefei Municipality,three periods of data in 2000,2010 and 2020 are used to analyze land use changes based on transfer matrix,regional ecological environment quality index,etc.The results show that,in the past 20 years,cultivated land area has consistently accounted for more than 68%of the total area,water area has increased by 8.99%,wetlands have decreased,and artificial surface area has increased.The overall ecological environment quality index shows an upward trend,indicating that the government’s implementation of policies such as returning farmland to forestry to improve the ecological environment has achieved good results.However,in some areas,there are ecological problems caused by grassland loss.