| The temporal-spatial dynamic of land ecosystem services value in Guanzhong, Shaanxi |
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| DOI：10.7606/j.issn.1000-7601.2017.04.25 |
| Key Words: Guanzhong area GIS land ecosystem services value spatial heterogeneity |
| Author Name | Affiliation | | MO Hong-wei | College of Resource Environment and Safety Engineering, Hunan University of Science and Technology, Xiangtan, Hunan 411201, China | | QUAN Bin | College of Resource Environment and Safety Engineering, Hunan University of Science and Technology, Xiangtan, Hunan 411201, China | | YUAN Kai-guo | College of Resource Environment and Safety Engineering, Hunan University of Science and Technology, Xiangtan, Hunan 411201, China | | XIE Jin-ning | College of Resource Environment and Safety Engineering, Hunan University of Science and Technology, Xiangtan, Hunan 411201, China | | XIANG Yun-bo | College of Resource Environment and Safety Engineering, Hunan University of Science and Technology, Xiangtan, Hunan 411201, China |
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| Abstract: |
| On the basis of Costanza's method and expert interviews with structured questionnaire answered by 700 Chinese ecologists, a new method for assessment of ecosystem services was developed, but spatial heterogeneity issue of land ecosystem services value (ESV) assessment is still an open question. Based on remote sensing images, climate data, soil data and DEM data, according to the theory of geographic information images and supported by RS, GIS, and land-use map, soil potential map and equivalent value per unit area of ecosystem services in China to obtain map of land ESV, the spatial heterogeneity issue of land ESV assessment was solved at the grid scale. This method consists of a major flaw of land ESV assessment relying on equivalent factor. After that, the authors analyzed temporal-spatial changes of land ESV in different scales such as grid units, terrain units, and administrative units of Guanzhong area from 1986 to 2007. The results showed that the total ecosystem service value (ESV) of Guanzhong area increased from 50.96 billion yuan in 1986 to 56.10 billion yuan in 2007, increased by 10.09%. The growth rate of the total ESV in 2000—2007 was 33.65 times higher than that in 1986—2000. Among all counties, there were 11 counties whose total ESV increased. Among five geomorphologic units of Guanzhong, the total ESV of plain reduced and the total ESV of the other four geomorphologic units increased, in which both the largest increment and the fastest growing took place in mountains. Adjusting land use structure in the research period has made obvious ecological benefits, providing a good environment platform for economic construction and social development of Guanzhong area. |
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