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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
程琳琳1, 黄婷1, 刘焱序2
1.中国矿业大学(北京) 地球科学与测绘工程学院, 北京 100083;2.北京师范大学 地理科学学部 地表过程与资源生态国家重点实验室, 北京 100875
摘要:
[目的] 基于改进的单位面积生态服务价值基础当量表和土地覆被数据集,评估青藏高原1992-2015年生态系统服务价值演化,为青藏高原生态安全保障提供空间指引。[方法] 借助改进的单位面积生态服务价值基础当量表,结合CCI-LC长时间序列土地覆被产品评估生态系统服务价值。[结果] ①1992-2015年青藏高原生态系统服务价值有所提高,24 a间增加了1.62×1011元,且不同生态系统类型的服务价值呈现:草地 > 水域 > 森林 > 湿地 > 农田 > 荒漠的特征;②生态系统调节服务价值量最高,2015年高达5.53×1012元,支持服务和供给服务其次分别为1.33×1012元和5.50×1011元,文化服务价值最低为2.90×1011元;③生态系统服务价值受高程和坡度的影响,在不同的高程和坡度下生态系统服务价值都是先增加后减少,4 000~5 000 m高程范围内和5°~15°坡度范围内的价值量最高。[结论] 1992-2015年青藏高原生态系统服务总价值得到提高,不同的生态系统以及生态系统服务类型的价值量差异大,地形条件对生态系统服务价值有所影响。
关键词:  生态系统服务  价值当量因子  CCI-LC数据集  演化规律  地形
DOI:10.13961/j.cnki.stbctb.2019.05.034
分类号:F124.5;X171.1
基金项目:中国科学院战略性先导科技专项课题“青藏高原生态安全屏障体系优化与生态资产价值提升”(XDA20020402);国家自然科学基金项目“‘一带一路’区域生态系统服务权衡关系的变化情景与影响阈值”(41801059)
Analysis on Evolution of Ecosystem Service Value in Qinghai-Tibet Plateau Based on Improved Value Equivalent Factors from 1992 to 2015
Cheng Linlin1, Huang Ting1, Liu Yanxu2
1.Institute of Land Reclamation and Ecological Restoration, China University of Mining and Technology(Beijing), Beijing 100083, China;2.State Key Laboratory of Earth Surface Processes and Resource Ecology, Department of Geography, Beijing Normal University, Beijing 100875, China
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.
Key words:  ecosystem services  value equivalence factor  CCI-LC dataset  evolution rule  terrain