耦合生态服务供需匹配的苏鲁豫皖采煤沉陷湿地治理分区

Regionalization of the Governance of Coal Mining Subsided Wetlands Based on Coupled Ecosystem Service Supply-demand Matching in Jiangsu-Shandong-Henan-Anhui Region

  • 摘要: 苏鲁豫皖4省交界区域井工开采形成了大量采煤沉陷湿地, 厘清沉陷湿地生态系统服务供需关系对制定湿地保护和修复规划至关重要。为此, 利用遥感监测技术、生态系统服务评估等方法识别苏鲁豫皖交界区域沉陷湿地图斑, 揭示生态系统服务供需匹配格局, 提出湿地治理分区策略。结果表明: (1)2023年研究区共有1 055个沉陷湿地图斑, 单个图斑面积介于0.03~1 124.69 hm2之间, 总面积为30 863.45 hm2, 呈现局部集聚的分布格局。(2)沉陷湿地产生多维生态系统服务, 其中气候调节服务价值最高。研究区人口密度大、土地资源稀缺, 对沉陷湿地食物和能源供给等生产服务需求旺盛, 对城市周边沉陷湿地的气候调节和文化服务需求也较高。(3)沉陷湿地生态系统服务呈现“整体供大于求、局部供不应求”的空间格局, 其中, 大型沉陷湿地通过发展渔光产业, 生产和调节服务以供大于求为主; 而中小型沉陷湿地普遍面临供不应求的挑战, 文化服务供需矛盾突出。(4)本研究耦合生态系统服务供需匹配关系, 构建“分区管控、服务导向、分类治理”修复框架, 划分10类差异化治理分区并针对性制定配套治理方案, 可为采煤沉陷区生态修复规划及湿地生态系统精细化管理提供科学支撑。

     

    Abstract: Numerous subsided wetlands have formed after extensive underground coal mining in Jiangsu, Shandong, Henan, and Anhui. Understanding the supply-demand relationship of ecosystem services (ES) is crucial for developing wetland protection and restoration plans. We highlighted the supply-demand matching of ES and developed regional governance strategies by integrating remote sensing with detailed information about the ES spatial distribution. The results show that: (1) In 2023, the study region contained 1 055 subsided wetland patches distributed in localized clusters, with areas ranging from 0.03 to 1 124.69 hm2, and covering a total area of 30 863.45 hm2. (2) These wetlands provided several ES, of which climate regulation was the most valuable. There was a strong demand for production services such as food and energy supply in the study area, which has a high population density and scarce land resources. There was also a high demand for climate regulation and cultural services from the subsided wetlands close to cities. (3) The supply of ES from the subsided wetlands exceeded demand both overall and locally. The supply of ES for large subsided wetlands, derived from and influenced by the fishing and photovoltaic industries, exceeded demand. However, the ES supply from small- and medium-sized subsided wetlands was generally inadequate, with a clear mismatch between the supply and demand of cultural services. (4) The study developed a "zoning control, service-oriented, classified management" framework for the region that divided the area into 10 governance zones and provided robust strategies for managing wetland ecosystems in mining subsidence areas.

     

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