临汾市土地利用变化的格局分析及其对生态系统服务价值的影响

文章以临汾市2004年、2009年、2014年等3期遥感影像为信息源对研究区土地利用及生态服务价值进行分析。从土地利用转移方向来看,2004~2009年间,河流、湖泊和林地增加的部分主要由裸地和草地转化而来;2009~2014年间,河流、湖泊主要转变为林地,其次为裸地。从研究区的空间格局来看,各类土地利用类型的发展趋于不均衡,优势斑块的优势地位越来越明显,斑块的连通性增强。从生态服务价值的角度来看,临汾市生态服务价值量表现出增加趋势,所有土地利用敏感性指数均小于1,生态系统服务价值对价值系数缺乏弹性,研究结果比较可信。

ANALYSIS OF CHANGING SITUATION OF LANDSCAPE PATTERNS AND EFFECTS OF LAND USE CHANGE ON ECOSYSTEM SERVICE VALUE IN LINFEN CITY, CHINA

In this study, the changes of land use and ecosystem service values were evaluated using the data from the TM imags of Linfen city obtained in 2004, 2009 and 2014. From the view of land use transfer direction, the lands of rivers, lakes and woodlands increased from bare land and grassland during 2004-2009; Rivers and lakes mainly converted to forest land and bare ground during 2009-2014. From the spatial pattern of the study area, the various land use types tended to be unbalanced, the dominant position in the advantage plaques were increasingly obvious, and the plaques enhanced connectivity. Meanwhile, the value of ecosystem services increased from 2004 to 2014, all of the land use value coefficients were less than 1. The value of ecosystem services in the study area was lack of flexibility on the value coefficient.