Analysis on Evolution of Ecosystem Service Value in Qinghai-Tibet Plateau Based on Improved Value Equivalent Factors from 1992 to 2015
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F124.5;X171.1

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    Abstract:

    [Objective] Based on the improved unit area ecological service value and land cover data set, the evolution of the ecosystem service value of the Qinghai-Tibet Plateau from 1992 to 2015 was evaluated. Aims included providing spatial guidance for the ecological security of the Qinghai-Tibet Plateau.[Methods] We applied the improved value equivalent factor in combination with CCI-LC long-term sequence land cover data to assess ecosystem service values.[Results] ① The value of the ecosystem services on the Qinghai-Tibet Plateau increased form 1992 to 2015, with an increase of 1.62×1011 yuan in 24 years. The values of services of different ecosystem types were ranked:grassland > water area > forest > farmland > wetland > desert. ② The highest value type was the ecosystem regulation service in 2015, which reached 5.53×1012 yuan, whereas the values of support service and supply service were 1.33×1012 yuan and 5.50×1011 yuan, respectively, and the cultural service was of least value at 2.90×1011 yuan. ③ The ecosystem service value was affected by elevation and slope, whereby the highest value was in the range of 4 000~5 000 m elevation and 5°~15° slope.[Conclusion] The total value of the ecosystem services in the Qinghai-Tibet Plateau increased from 1992 to 2015, and the value of different ecosystems and ecosystem service types varied greatly. Terrain conditions affected the value of ecosystem services.

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程琳琳,黄婷,刘焱序.基于改进价值当量因子的1992-2015年青藏高原生态系统服务价值演化分析[J].水土保持通报英文版,2019,39(5):242-248

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History
  • Received:December 05,2018
  • Revised:April 23,2019
  • Online: November 16,2019