Construction of a regional ecological security pattern based on a habitat quality model and circuit theory: A case study of the Qinling Mountains（Shaanxi section）

• Published in: Journal of agricultural resources and environment Vol. 39; no. 5; p. 1069
• Main Authors: Du Yuyang, Wang, Zhengqiang, Yu Qinghe, Yang Yongchong, Zhang Quanwen
• Format: Journal Article
• Language: Chinese
• Published: Tianjin Journal of Agricultural Resources and Environment (JARE) 01.01.2022
• Subjects: Agricultural land; Breakpoints; Circuits; Construction; Corridors; Cultivated lands; Ecological effects; Ecological monitoring; Ecosystem disturbance; Environmental quality; Environmental restoration; Grasslands; Green development; Land use; Land use management; Mountainous areas; Mountains; Natural environment; Regional development; Security; Spatial distribution; Sustainable development; Qinling Mountains
• ISSN: 2095-6819; 2095-6819
• DOI: 10.13254/j.jare.2021.0531

构建区域生态安全格局是实现生态环境可持续发展的重要途径，人类活动使当前自然地域生态安全面临严重威胁。为建立自然地域生态安全格局，以具有典型山地垂直地带性的秦岭（陕西段）为研究对象，运用粒度反推法评价景观格局最佳组分，构建InVEST生境质量模型及综合阻力面，运用电路理论提取生态廊道、生态夹点、生态障碍点及生态断裂点，结合土地利用现状提出针对性修复治理建议。结果表明：研究区内66处生态源地呈现出明显的西部集聚成片、东部分散稀疏的空间分布特征。共识别出119条宽度为1 200 m的生态廊道、102处生态夹点、72处生态障碍点及58处生态断裂点；生态廊道、生态夹点和生态障碍点的用地类型仍有待整治，耕地面积占比分别为26.75%、23.80%和31.66%。结合土地利用现状，提出积极推行退耕还林、还草工作，加强城乡绿地建设，推动乡村振兴转型发展，对生态断裂点实行动态监测、设立标示牌等针对性治理措施。受自然环境及人类活动共同影响，秦岭境内生态待修复区主要集中在商洛和安康。研究结果为识别生态待修复区与构建山地区域生态安全格局提供参考。Constructing the pattern of regional ecological security is an important way to realize the sustainable development of the ecological environment, which seriously threatens the ecological security of natural areas. To establish the natural regional ecological security pattern, this study took the Qinling Mountains(Shaanxi section) with typical vertical zonality as the research object. The granularity of backstepping method was used to evaluate the best components of landscape pattern, and the InVEST habitat quality model and comprehensive resistance