基于InVEST和MCR模型的南方山地丘陵区生态保护红线优化  

Optimization of ecological red line in the hilly region of Southern China based on In VEST and MCR model

作　　者：李怡 赵小敏[1,2] 郭熙 周丙娟[1,2] 黄心怡 易丹[1,2] 丁徽 LI Yi;ZHAO Xiao-min;GUO Xi;ZHOU Bing-juan;HUANG Xin-yi;YI Dan;DING Hui(College of Land Resources and Environment,Jiangxi Agricultural University,Nanchang 330045,China;Key Laboratory of Poyang Lake Watershed Agricultural Resources and Ecology of Jiangxi Province,Nanchang 330045,China)

机构地区：[1]江西农业大学国土资源与环境学院,南昌330045 [2]江西省鄱阳湖流域农业资源与生态重点实验室,南昌330045

出　　处：《自然资源学报》2021年第11期2980-2994,共15页Journal of Natural Resources

基　　金：国家自然科学基金项目(41361049);江西省赣鄱英才“555”领军人才项目(201295)。

摘　　要：优化生态保护红线,是顺应新时代多规融合趋势、推进国土空间高效管理与生态文明建设的重要举措。以南方山地丘陵区典型县奉新县为例,基于In VEST模型进行生境质量评价以识别生态源地及其缓冲区,采用水土流失敏感性修正基本阻力面,运用MCR模型构建奉新县生态安全格局,定量衡量与定性分析相结合对生态安全格局进行有效性评价,继而提出奉新县生态保护红线优化方案。结果表明:(1)生态源地及生态源地缓冲区面积分别为144.42 km^(2)、354.01 km^(2),分别占研究区总面积的8.76%与21.47%,并识别出19个生态节点;(2)识别出关键生态廊道76 km,一般生态廊道315 km,与生态节点、生态源地、生态源地缓冲区共同构成研究区生态安全格局,面积共498.43 km^(2),占奉新县总面积的30.23%,集中分布于研究区西部山地丘陵区;(3)经有效性评价证实生态安全格局较生态保护红线更具生态优化意义;(4)划定生态保护红线补划区与生态保护红线储备区,共为生态保护红线调整优化预留了199.34 km^(2)的高质量后备资源,形成研究区生态保护红线优化方案。研究成果可为南方山地丘陵区生态保护红线的评估优化提供科学参考。Optimizing the ecological red line is an important measure to comply with the multiregulation integration trend in the New Era and promote efficient management of land and space as well as the construction of ecological civilization. Fengxin, a typical county in the mountainous and hilly areas of southern China, was taken as the study area. Based on In VEST model, the study carried out habitat quality evaluation to identify ecological sources and ecological source buffer zones. The basic resistance surface was modified by the sensitivity of soil and water loss. The ecological security pattern of the study area was constructed by MCR model. The effectiveness of ecological security pattern was analyzed qualitatively and quantitatively, and then an optimization scheme for ecological red line was proposed. Results showed that:(1) The areas of the ecological sources and buffer zones were 144.42 km^(2)and354.01 km^(2), respectively, accounting for 8.76% and 21.47% of the region’s total area, and 19 ecological nodes were identified.(2) A total of 76 km key ecological corridors and 315 km general ecological corridors were identified, together with ecological nodes, ecological source areas, and ecological source buffer zones, thus the ecological security pattern of the study area was formed. The area of ecological security pattern was 498.43 km^(2), accounting for 30.23% of the total area, which was mainly distributed in the mountainous and hilly areas of Western Fengxin county.(3) The effectiveness evaluation confirms that the ecological security pattern is more ecologically optimized than the ecological protection red line.(4) The supplementary regions and reserve region of ecological red line were demarcated, and 199.34 km^(2)of highquality reserve resources have been reserved for the adjustment and optimization of the ecological red line, which is an ecological red line optimization scheme for the study area. This study provides a reference case for the evaluation and optimization of the ecological red line in the m

关 键 词：生态保护红线 生态安全格局 InVEST模型 MCR模型 南方山地丘陵区 

分 类 号：X171.4[环境科学与工程—环境科学]