资源科学 ›› 2020, Vol. 42 ›› Issue (10): 2010-2021.doi: 10.18402/resci.2020.10.17

• 实证与应用 • 上一篇    下一篇

基于多源数据综合观测的生态安全格局构建——以江西省万年县为例

高阳1,2(), 刘悦忻1,2(), 钱建利3, 郭游4, 胡迎山4   

  1. 1. 中国农业大学土地科学与技术学院,北京 100193
    2. 自然资源部农用地质量与监控重点实验室,北京 100193
    3. 中国地质调查局西安矿产资源调查中心,西安 710100
    4. 中国地质调查局自然资源综合调查指挥中心,北京 100055
  • 收稿日期:2020-05-06 修回日期:2020-08-21 出版日期:2020-10-25 发布日期:2020-12-25
  • 通讯作者: 刘悦忻
  • 作者简介:高阳,女,北京人,副教授,研究方向为土地利用/覆被变化、生态系统服务。E-mail: yanggao@cau.edu.cn
  • 基金资助:
    国家社会科学基金青年项目(19CGL037);全国自然资源要素综合观测体系规划与部署项目(DD20208063);自然资源要素综合观测数据集成与应用服务项目(DD20208067)

Improving ecological security pattern based on the integrated observation of multiple source data: A case study of Wannian County, Jiangxi Province

GAO Yang1,2(), LIU Yuexin1,2(), Qian Jianli3, GUO You4, HU Yingshan4   

  1. 1. College of Land Science and Technology, China Agricultural University, Beijing 100193, China
    2. Key Laboratory of Agricultural Land Quality and Monitoring, Ministry of Natural Resources, Beijing 100193, China
    3. Xi’an Mineral Resources Research Center of China Geological Survey, Xi’an 710100, China
    4. Natural Resources Comprehensive Survey Command Center, China Geology Survey, Beijng 100055, China
  • Received:2020-05-06 Revised:2020-08-21 Online:2020-10-25 Published:2020-12-25
  • Contact: LIU Yuexin

摘要:

全面掌握区域自然资源现状,以此为数据基础进行生态安全格局优化,对综合开发及统筹布局自然资源具有重要意义。开展自然资源综合观测、识别区域生态保护及修复节点是安全格局构建的关键环节。本文选取江西省万年县为研究区,通过土地利用类型、DEM、道路数据和自然保护地数据对区域资源现状进行综合观测;同时基于InVEST模型、粒度反推法以及区域现状确定生态源地;结合土地利用类型、地形以及道路因子构建综合阻力面;并使用电路理论判定生态廊道,识别生态修复关键点。结果表明:①万年县生态源地面积95.93 km2,林地为主要源地类型,其对于区域生态安全格局的稳定至关重要;生态廊道长度217.89 km,其中,贯穿全域的33条关键廊道需要优先保护,未来可作为自然资源综合观测及监测的重点区域。②识别出“夹点”11处,“障碍点”74处,区域生境连通性仍有较大提升空间。③基于电路理论,通过源地选取、阻力面及廊道构建、重要战略点识别等,整合全域山水林田湖草自然资源,针对生态安全格局提出不同分区的资源优化策略,对于提高区域资源供给能力具有积极的实践意义。

关键词: 综合观测, 生态安全格局, 生态廊道, 重要战略点, 资源优化分区, 指标选取, 电路理论, 万年县

Abstract:

In recent years, the lack of ecological efficiency has restricted the sustainable development of the economy and society to a certain extent. Therefore, determining the current status of natural resources and optimizing the ecological security pattern based on this is of great significance for the comprehensive development and overall spatial configuration of natural and socioeconomic factors. Taking Wannian County, Jiangxi Province as an example, this study observed the status of regional resources through land use type, digital elevation model, road, and nature reserve data. The study determined ecological sources based on the InVEST model, granularity inversion method, and current regional conditions. Land use types and terrain and road factors were used to construct a comprehensive resistance surface. The circuit theory was then applied to determine ecological corridors and identify key points for ecological restoration. The results show that: (1) The total area of the 16 ecological sources are 95.93 km2, of which forest is the main land-use type, which is crucial for the stability of the regional ecological network. The length of ecological corridors is 217.89 km, of which 33 key corridors throughout the region need to be given priority for protection. These corridors can be used as a key area for comprehensive observation and monitoring of natural resources. (2) We identified 11 “pinch points” that are mainly ecological land distributed around high resistance areas, and 74 “barrier points” that appear in areas of intensive activities. There is much room for regional habitat connectivity improvement. (3) Based on the circuit theory, we integrated the natural resources of mountains, waters, forests, croplands, and grasslands through the point-line-surface construction process and proposed resource optimization strategies for different regions according to the ecological security pattern, which has positive practical significance for improving the structural supply capacity of regional resources.

Key words: integrated observation, ecological security pattern, ecological corridor, important strategic points, optimized resource partition, index selection, circuit theory, Wannian County