Spatial pattern analysis of ecological security in Fuhe River Basin based on dominant ecological function

PDF HTML阅读 XML下载 导出引用 引用提醒 基于主导生态功能的抚河流域国土空间生态安全格局分析 DOI: 10.5846/stxb202112303711 作者: 作者单位: 作者简介: 通讯作者: 中图分类号: 基金项目: 国家自然科学基金项目(31660140);江西省十三五社科规划项目(17YJ11);江西省高校人文社科规划项目(GL17113);江西省土地开发整理中心项目(9131207800) Spatial pattern analysis of ecological security in Fuhe River Basin based on dominant ecological function Author: Affiliation: Fund Project: The National Natural Science Foundation of China (31660140); Jiangxi Province's 13th Five-Year Plan for Social Sciences (17YJ11); Jiangxi Province's University Humanities and Social Sciences Program (GL17113); Jiangxi Province's Land Development and Consolidation Center Project (9131207800) 摘要 | 图/表 | 访问统计 | 参考文献 | 相似文献 | 引证文献 | 资源附件 | 文章评论 摘要:从主导生态功能的角度分析探讨生态安全格局,是明晰流域内生态安全、保护生物多样性的重要途径。以抚河流域为研究对象,采用多源空间数据,根据研究区自然条件和生态状况,基于主导生态功能定量评估水源涵养、水土保持、生物多样性3个生态系统服务功能,结合粒度反推法和热点分析选取生态源地,综合自然条件和人类活动影响因素构建阻力面,运用电路理论构建生态廊道,识别生态修复关键区域,提出生态安全格局优化对策。研究结果表明:(1)抚河流域内有25块生态源地,主要为林草地,共5574.63km2,60条生态廊道,共1126.91km;(2)基于生态安全格局识别生态修复关键区域,包括生态夹点26处、总长度为182.99km,生态障碍点19处、总面积为167.09km2,生态断裂点146处,破碎生态空间3283.79km2;(3)结合生态安全格局和生态修复关键区域,构建"三轴六区"生态安全空间布局优化体系。研究对维护抚河流域的生态安全、实行国土空间生态系统修复具有指导意义。 Abstract:Analyzing and exploring ecological security patterns from the perspective of dominant ecological functions is an important way to clarify the ecological security and protect biodiversity in the watershed. Taking the Fuhe River Basin as the research object, according to the natural conditions and ecological status of the study area, this paper used multi-source spatial data to quantitatively evaluate ecosystem services including water connotation, soil conservation and biodiversity based on the dominant ecological functions. This paper selected the ecological sources by combining Granularity Inverse Method and hot spot analysis to construct the resistance surfaces by integrating natural conditions and factors influenced by human activities, and to construct the ecological corridors by applying circuit theory. On these bases, this paper identified key areas of ecological restoration and proposed measures to optimize ecological security patterns. The results showed that there were 25 ecological sources covering area of 5574.63 km2, mainly forest and grassland, with 60 corridors totaling 1126.91 km between them. The key ecological restoration areas were identified based on ecological security pattern, including 26 ecological pinch points totaling 182.99km, 19 ecological barrier points totaling 167.09 km2, 146 ecological break points, and fragment ecological land totaling 3283.79 km2. Combining the ecological security pattern and key areas of ecological restoration, the "three axes and six zones" ecological security spatial layout optimization system was constructed. It would help to provide scientific guidance for maintaining the ecological security of the Fuhe River Basin and implementing the restoration of the national spatial ecosystem. 参考文献 相似文献 引证文献