| Effect of land-use on ecosystem service values in Qinghai Province |
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| DOI：10.7606/j.issn.1000-7601.2016.03.40 |
| Key Words: land use change ecosystem services value Qinghai Province |
| Author Name | Affiliation | | SI Hui-juan | School of Land Science and Technology, China University of Geosciences, Beijing 100083, China
Qinghai Institute of land use planning, Xining， Qinghai 810000, China | | YUAN Chun | School of Land Science and Technology, China University of Geosciences, Beijing 100083, China | | ZHOU Wei | School of Land Science and Technology, China University of Geosciences, Beijing 100083, China |
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| Abstract: |
| Based on the land use change data in 1999, 2006 and 2013 of Qinghai Province, and by the evaluation of land use dynamic index, ecosystem service values, coefficient of sensitivity, this paper analyzed the changes of ecosystem services value and explored the responses of ecosystem services value change to land use change in Qinghai Province. The result shows that during this period, the area of forest land grassland orchard and construction land increased. However, cultivated land, water area and unused land decreased. The ecosystem services value increased from 4 477.29 billion yuan in 1999 to 4 507.07 billion yuan in 2013. For the structure of ecosystem services, the grassland, forest and water area made the greatest contributions to the total ecosystem services value of the study region. The accumulative ecosystem services value of three land use types accounted for over 96% of the total value in Qinghai Province. The water supply, soil formation and protection, waste treatment made the biggest contribution, while the contribution rates of raw material and food production were under 5%, indicating that the services functions was much larger than the productive function. Sensitivity analysis indicated that the estimated total ecosystem services value in the study area was inelastic to the services value coefficients, and the results obtained in this study were scientifically sound. |
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