复垦矿区生态系统服务价值空间分异研究——以徐州市贾汪矿区为例

Spatial heterogeneity of ecosystem service value of reclaimed land in mining area:A case study of Jiawang mining area in Xuzhou city

以徐州市贾汪矿区复垦前后两期遥感影像为数据源,利用格网地理信息系统和地统计方法对复垦矿区生态系统服务价值的空间异质性及变化过程进行分析.结果表明:研究区生态系统服务价值增加了12.98%,即4 861.77万元,水域和林地面积的增加是区域生态系统服务价值增加的主要原因;从单项生态系统服务价值的变化来看,提供美学景观、水文调节等功能增幅较大,主要由于水域和林地面积的增加;复垦矿区生态服务价值的空间异质性发生了较大变化,约有35.04%的区域生态系统服务价值呈增加趋势,主要分布在采煤塌陷区和山地丘陵地带;约有8.99%的区域呈减少趋势,主要分布在贾汪城区、城镇和农村居民点等区域外围.

In order to reveal the spatial behavior and the dynamics of ecosystem service value of reclaimed land in mining area, spatial heterogeneity and evolution of ecosystem service value in mining area with reclamation project were analyzed with the methods of Grid GIS （Geographic Information System） and geo-statistics on the basis of the remote sensing images of Jiawang mining area in Xuzhou city. The results show that as a result of the expansion of water and forest areas, the regional ecosystem service value increased by 12.98% （converted into 4 861.77× 10^4 Yuan）, and single ecosystem service value, such as providing aesthetic landscape and hydrology regulatory function, increased sharply. Spatial heterogeneity of regional e-cosystem service value in mining area with land reclamation project changed greatly and the regional ecosystem service value of about 35.04% of the study area, mainly in coal mining sub-sidenee area and mountainous and hilly areas, was found an upward trend. Conversely, the value of 8.99% of the study area, mainly in the outside areas of Jiawang region, town and countryside, was found a downward trend.