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中国沙漠 ›› 2023, Vol. 43 ›› Issue (2): 53-64.DOI: 10.7522/j.issn.1000-694X.2022.00119

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基于优化模型的甘肃省生态系统服务价值时空评估

徐绮阳(), 王永瑜(), 杨燕燕   

  1. 兰州财经大学 统计学院,甘肃 兰州 730020
  • 收稿日期:2022-03-20 修回日期:2022-08-02 出版日期:2023-03-20 发布日期:2023-04-12
  • 通讯作者: 王永瑜
  • 作者简介:王永瑜(E-mail: yongyu_wang@163.com
    徐绮阳(1988—),女,安徽阜阳人,博士研究生,主要从事生态价值核算研究。E-mail: xusaisai555@126.com
  • 基金资助:
    国家社会科学基金一般项目(22BTJ002);兰州财经大学科研创新团队支持计划项目(2020LC03);兰州财经大学博士研究生科研创新重点项目(2021D04)

Spatio-temporal evaluation of ecosystem service value in Gansu Province based on optimization model

Qiyang Xu(), Yongyu Wang(), Yanyan Yang   

  1. School of Statistics,Lanzhou University of Finance and Economics,Lanzhou 730020,China
  • Received:2022-03-20 Revised:2022-08-02 Online:2023-03-20 Published:2023-04-12
  • Contact: Yongyu Wang

摘要:

当前,生态系统服务价值评估模型在计量范围界定和方法适用性方面仍存在局限。基于“环境经济核算-生态系统核算”明确生态系统服务计量范围,采用修正的当量因子法,构建了优化的生态系统服务价值评估模型,评估并分析了2010—2018年甘肃省生态系统服务价值变化趋势及14个市州的空间分布特征。结果表明:(1)甘肃省土地利用结构以荒漠和草地为主,研究期内农田和荒漠面积减少,森林、草地和水域面积呈不同幅度增加趋势。(2)2010—2018年甘肃省生态系统服务价值的增加率为20.68%;水域、森林和草地生态系统服务价值呈增加趋势,农田和荒漠生态系统服务价值均不同程度减少;各单项生态系统服务功能价值均呈增加趋势。(3)甘肃省生态系统服务价值在空间上呈南多北少分布特征,2018年陇南市、甘南州和张掖市的单位面积生态系统服务价值在全省位居前三。(4)甘肃省生态系统服务稀缺性问题越来越突出,各市州生态系统服务价值相对于社会经济价值的稀缺程度差异明显。以此优化模型对生态系统服务价值进行综合时空评估,可为甘肃省乃至黄河流域生态补偿和生态产品价值实现提供一定的决策依据。

关键词: 生态系统服务价值, 计量范围, 修正方法, 优化模型, 甘肃省

Abstract:

There are still limitations in the measurement scope and applicability of current ecosystem service valuation models. Based on SEEA-EA, the scope of ecosystem service measurement was defined, and an optimized ecosystem service value assessment model was constructed by using the modified equivalent factor method. Taking Gansu Province as the study area, the trend of ecosystem service value changed from 2010 to 2018 and the spatial distribution characteristics of 14 cities and states in Gansu Province were evaluated and analyzed. The results showed that: (1) The land use structure of Gansu Province was dominated by desert and grassland. The area of farmland and desert decreased during the study period, while the area of forest, grassland and water area increased in different ranges. (2) The increase rate of ecosystem service value in Gansu Province from 2010 to 2018 was 20.68%. The ecosystem service value of water area, forest and grassland increased, while the ecosystem service value of cropland and desert decreased. The value of each individual ecosystem service showed an increasing trend. (3) The ecosystem service value of Gansu Province was more in the south and less in the north. The ecosystem service value per unit area of Longnan, Gannan and Zhangye ranked the top three in Gansu Province in 2018. (4) The scarcity of ecosystem services was becoming more and more prominent in Gansu Province, and the scarcity degree of ecosystem services value relative to socio-economic value varied significantly among cities and states. This optimization model can be used to carry out a comprehensive spatio-temporal evaluation of ecosystem service value, which can provide a certain decision basis for ecological compensation and value realization of ecological products in Gansu Province and even in the Yellow River Basin.

Key words: ecosystem service value, measurement range, correction method, optimization model, Gansu Province

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