基于地统计学的区域生态服务价值空间分异规律研究

Study on Spatial Distribution of Regional Ecosystem Service Value Based on Geostatistics

以1997年和2007年Landsat TM影像解译数据为基础,采用空间格网作为表达单元,分别从空间分布和空间结构两个角度分析了邯郸市生态系统服务价值的空间分异规律。结果表明:1997—2007年10a间邯郸市的生态系统服务价值总体比较稳定,空间分布格局基本未发生改变,通过极值分析表明10a间区域的生态系统服务价值呈下降态势;邯郸市生态系统服务价值存在明显的地域性差异,其中高值区主要分布于西部山地、丘陵地带,而低值区则主要分布于中部平原城镇聚集区;从空间结构的角度分析,邯郸市的生态系统服务价值存在明显的方向性结构特征,不同方向的空间自相关程度相异、块金效应和空间异质性程度。

Based on the Landsat TM images of 1997 and 2007,the spatial grid was used to display the ecological service value from the view of spatial distribution and spatial structure.The result showed that the ecological service value of Handan was stable in general from 1997 to 2007,but according to the extreme value analysis,the ecological service value showed a descent trend,which might be induced by the increase of construction land and the decrease of the cropland and water body.From the view of spatial structure,the ecological service value displayed the obvious spatial heterogeneous,the spatial relative strength,nugget effect and spatial heterogeneous were different in different directions.