基于GEE的淮南市土地利用变化对生态系统服务价值的影响

以淮南市为研究区,基于谷歌地球引擎(GEE)云平台获取的土地利用数据和修正的当量因子表,分析2010—2018年淮南市生态系统服务价值(ESV)的时空变化,以期探究淮南市煤炭开采对ESV的影响,为淮南市可持续发展提供决策依据。结果表明:2010—2018年,淮南市的耕地面积减少,建设用地和水域面积增加,其他土地利用类型变化幅度较小;淮南市ESV呈增长趋势,由2010年的98.37亿元增长到了2018年的119.64亿元;基于1 km×1 km的格网尺度对淮南市ESV进行分析发现:淮南市ESV低值区面积减少,较低、中等、较高、高等级的面积均呈上升趋势;各土地利用类型价值系数的敏感性指数均小于1,说明研究结果具有可靠性;淮南市ESV与累计原煤产量有较高的相关性,两者相关系数R2为0.8546。

Influence of Land Use Change on Ecosystem Service Value Based on GEE in Huainan City

Taking Huainan city as the research area,based on the land use data obtained from the Google Earth Engine(GEE)cloud platform and the revised equivalent factor table,the temporal and spatial changes of Huainan’s ecosystem service value(ESV)from 2010 to 2018 were analyzed,in order to explore the impact of coal mining on the value of ecological services in Huainan city,and to provide a basis for decision-making for the sustainable development of Huainan city.The results show:from 2010 to 2018,the area of cultivated land in Huainan city decreased,the area of construction land and water area increased,and the change of other land use types was small;the ESV of Huainan city showed an increasing trend,from 9.837 billion yuan in 2010 to 11.964 billion yuan in 2018;based on the grid scale of 1km×1km,the analysis of ESV in Huainan city found that the area of low ESV areas in Huainan city decreased,and the areas of low,medium,high,and high grades all showed an upward trend;the sensitivity coefficient of the value coefficient of each land use type is less than 1,indicating that the research results are reliable;Huainan’s ESV has a high correlation with the cumulative raw coal production,and the correlation coefficient R~2 between the two is 0.8546.