Effects of the Land Use Change on Ecosystem Service Value Based on Remote Sensing and GIS

doi:10.11924/j.issn.1000-6850.2013-0810

Abstract

Abstract: In order to research the effect of land use change on ecosystem service value, and provide the reference for land sustainable use and ecological environment protection, the land use information was extracted based on Landsat TM images from 1992 to 2008, following remote sensing and GIS in Shuangliu County, Sichuan Province. The land use/cover change in study area was analyzed for 16 years. The ecosystem service value as result of the regional land use change was evaluated by adopting the service value method in Chinese terrestrial ecosystem. The results showed that: (1) the land use change in Shuangliu County was significantly notable in 1992 to 2008. The area of cultivated land (paddy field and dry land) and forest land respectively was decreased by 28207.249 hm² and 1752.915 hm², respectively. Construction land area was increased with 17034.99 hm². The cultivated land (paddy field) and forest land was converted to construction land (town land, industrial and mining land); (2) The regional ecosystem services value was increased by 4508.859×10⁴ Yuan, but there was different change trend at different times, such as the ecosystem services value fell by 10.59% in 1992 to 2000, increase by 16.024% in 2000 to 2008; (3) The conversion from forest land and cultivated land (paddy field) to construction land (town land, industrial and mining land) caused a decline in the value of ecosystem services and negative flow, the total value was 2197.233×10⁴ Yuan, 5317.460×10⁴ Yuan; (4) The coefficient change of ecological value on the ecosystem service value change was inelastic, the relative sensitivity of forest land was: forest land＞cultivated land (paddy field and dry land)＞water area. The impact of land use changed on regional ecosystem service value change, the most affected by water, arable land and forest land was relatively small.

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