摘要
生态安全格局构建有利于生态系统健康和稳定,对区域可持续发展具有重要意义。本研究按“生态源地-阻力面-廊道”研究范式,根据“敏感性-重要性-连通性”指标框架进行生态源地识别,通过下垫面因子分级赋权和兴趣点(POI)方法修正生成生态阻力面,运用电路理论厘定生态廊道、夹点和障碍区,基于此构建贵州省生态安全格局。结果表明:贵州省石漠化、水土流失极敏感区以及水源涵养、水土保持、生物多样性极重要区面积较小,空间异质性显著,分别占贵州总面积的1.6%、3.7%、25.2%、6.1%和10.4%;关键生态功能区中,生态极敏感、服务极重要和强景观连通地域分别占贵州总面积的5.3%、34.2%和27.9%;全省共有生态源地210块,面积27574.38 km^(2),占比15.6%;共有生态廊道463条,总长10049.81 km;共有生态夹点490个,生态障碍区117处,面积分别为22.08和91.04 km^(2);生态高阻力区主要分布在高频人类活动地域。基于以上构建贵州省生态安全格局,进行生态安全分区,并针对性提出了保护修复措施。本研究成果可为贵州省国土空间规划和区域生态保护提供科学参考。
The construction of an ecological security pattern is crucial to maintain ecosystem health and stability,with great significance for regional sustainable development.Following the research paradigm of"ecological source areas-ecological resistance surfaces-ecological corridors",based on the index framework of"sensitivity-importanceconnectivity",we identified the ecological source areas,generated the ecological resistance surface through graded weighting of underlying surface factors and point of interest(POI)method,determined the ecological corridor,pinch point,and obstacle area using circuit theory,and constructed the ecological security pattern of Guizhou Province.Results showed that the areas of extremely sensitive of rocky desertification and soil erosion and the areas of extremely important areas of water resources forming,soil and water conservation and biodiversity in Guizhou Province were generally small and distributed differently,accounting for 1.6%,3.7%,25.2%,6.1%,and 10.4%of the total area,respectively.The key ecological functional areas of the extremely sensitive to external disturbance,most important in ecosystem service and strongly connective in landscape accounted for 5.3%,34.2%,and 27.9%,respectively.A total of 210 ecological source areas were identified,covering 27574.38 km^(2) and with an area ratio of 15.6%.The number of the ecological corridor was counted into 463,with a total length of 10049.81 km.The amount of ecological pinch points was 490,while that of the ecological barrier was 117,area of the both were computed into 22.08 and 91.04 km^(2),respectively.Ecologically high-resistance areas were mainly distributed in regions with highly frequent human activities.Based on the above construction,we assessed the ecological security pattern in Guizhou Province,conducted ecological security zoning,and proposed targeted protection and restoration measures.The study could provide scientific references for the spatial planning of land and regional ecological protection in Guizhou Province.
作者
高祖桥
李常斌
杨致远
王逸飞
申娜
张旭阳
李美静
刘源文
GAO Zuqiao;LI Changbin;YANG Zhiyuan;WANG Yifei;SHEN Na;ZHANG Xuyang;LI Meijing;LIU Yuanwen(College of Earth and Entironment Sciences,Lanzhou University,Lanzhou 730030,China;Ministry of Education Key Laboralory of Western China's Environmental Systems,Lanzhou Universily,Lanzhou 730030,China;Gansu Institute of Urban and Rural Planning and Design,Lanzhou 730030,China)
出处
《应用生态学报》
CAS
CSCD
北大核心
2024年第10期2822-2832,共11页
Chinese Journal of Applied Ecology
基金
国家自然科学基金面上项目(42371024)
甘肃省科技重大专项计划项目(20ZD7FA005,21ZD4FA008)
兰州大学双碳专项计划项目(lzujbky-2021-sp70)
甘肃省哲学社会科学规划重点项目(2021ZD004)资助
关键词
生态安全格局
敏感性
重要性
连通性
贵州省
ecological security pattern
sensitivity
importance
connectivity
Guizhou Province
