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应用生态学报 ›› 2023, Vol. 34 ›› Issue (9): 2498-2506.doi: 10.13287/j.1001-9332.202309.020

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东江流域生态系统服务价值的时空演变及空间分异机制

于海霞1,2*, 王禹骁1,2   

  1. 1中山大学土木工程学院, 广东珠海 519085;
    2中山大学水资源与环境研究中心, 广州 510275
  • 收稿日期:2023-04-17 修回日期:2023-06-16 出版日期:2023-09-15 发布日期:2024-03-16
  • 通讯作者: *E-mail: yuhaixia@mail.sysu.edu.cn
  • 作者简介:于海霞, 女, 1976年生, 博士, 副教授。主要从事水-生态-经济协同机制及风险管理研究。E-mail: yuhaixia@mail.sysu.edu.cn
  • 基金资助:
    国家重点研发计划项目(2021YFC3001000)、广东省水利科技创新项目(2020-27)和中山大学大学生创新训练项目(202211448)资助

Spatio-temporal variations of ecosystem service value and its spatial heterogeneity mechanism in the Dongjiang River Basin, China

YU Haixia1,2*, WANG Yuxiao1,2   

  1. 1School of Civil Engineering, Sun Yat-sen University, Zhuhai 519085, Guangdong, China;
    2Water Resources and Environment Research Center, Sun Yat-sen University, Guangzhou 510275, China
  • Received:2023-04-17 Revised:2023-06-16 Online:2023-09-15 Published:2024-03-16

摘要: 基于土地利用/覆被变化,综合深入研究区域生态系统服务价值(ESV)的演变,对区域生态系统优化、自然环境与经济社会协同可持续发展具有重要意义。本研究基于东江流域2010—2020年土地利用、自然环境和社会经济数据,结合热点分析工具和局部空间自相关分析方法,综合分析东江流域ESV时空演变,并在地理探测器工具的支撑下探究东江流域ESV空间分异机制。结果表明: 2010—2020年,东江流域以森林生态系统为主,建设用地面积扩张明显,主要转入来源为耕地和林地;东江流域ESV整体呈先下降后上升趋势,其中,耕地、林地和建设用地ESV持续减少,水域ESV先减少后大幅增加;ESV冷热点空间分布存在显著的集聚效应,整体呈“上游热点散布、下游冷点聚集”的格局,上、下游地区ESV分布不均衡,下游地区承担较大的生态压力。ESV空间分异机制探测结果表明,土地利用是影响空间分异的主导因子,ESV空间分异解释力(q值)达0.462。因子协同作用会增强对东江流域ESV空间分异的影响效果。

关键词: 土地利用变化, 生态系统服务价值, 当量因子法, 热点分析, 地理探测器, 东江流域

Abstract: Comprehensive and deep research on the variations of ecosystem service value (ESV) based on land utilization/land cover change from a spatio-temporal perspective is of great significance for regional ecosystem optimization, as well as coordinated sustainable development of natural environment and economic society. Based on land utilization, natural environment, and socio-economic data of Dongjiang River Basin from 2010 to 2020, combined with hotspot analysis tools and local spatial autocorrelation analysis methods, we comprehensively analyzed the spatio-temporal variations of Dongjiang River Basin ESV, and further explored the spatial differentiation mechanism with geographic detector tools. The results showed that Dongjiang River Basin was dominated by forest ecosystem from 2010 to 2020. The construction land area had expanded significantly mainly from arable land and forest. The Dongjiang River Basin ESV showed a downward and then an upward trend. The ESV of arable land, forest and construction land continuously decreased, and the ESV of water decreased first and then increased substantially. The spatial distribution of ESV hot and cold spots had a significant agglomeration effect, presenting a pattern of hot spot dispersion in the upstream area and cold spots aggregation in the downstream area. The ESV distribution in the upstream and downstream area was not balanced, with the downstream area bearing greater ecological stress. According to the detection results of ESV spatial differentiation mechanism, land utilization was the main factor affecting the spatial differentiation, with the spatial difference of ESV (q value) reaching 0.462. The interaction of factors could greatly strengthen the spatial differentiation effect on Dongjiang River Basin ESV.

Key words: land-use change, ecosystem service value, equivalent factor method, hotspot analysis, Geodetector, Dongjiang River Basin