基于MSPA与MCR模型的余江县生态网络构建

发布时间：2018-05-15 02:08

本文选题：MSPA + MCR　；参考：《长江流域资源与环境》2017年08期

【摘要】：在我国社会经济快速发展的背景下,城市化进程的不断推进导致城市生态斑块日益减少,生态环境问题正在逐年增加,构建生态网络是改善城市生态环境与服务功能的有效方法之一。以余江县为研究区,采用形态学空间格局分析(MSPA)方法和景观指数法,提取对生态网络具有重要意义的生态源地,并基于MCR模型构建综合阻力面,采用最小成本路径方法生成潜在廊道,再基于重力模型、中介中心度等对关键廊道及踏脚石斑块进行识别并提取,从而构建研究区潜在生态网络。结果表明:MSPA方法能够与MCR模型有机的结合,通过定量的分析识别出研究区潜在生态廊道,并根据斑块的中介作用选定踏脚石斑块,明确研究区景观要素的保护优先度,将景观中的潜在生态源地及廊道作为生态网络构建的主要依据,能够更加科学地为余江县生态网络的构建提供指导,同时也可为其他区域提供参考。
[Abstract]:Under the background of the rapid development of our country's social economy, the continuous advancement of the urbanization process leads to the decreasing of the urban ecological plaque, and the ecological environmental problems are increasing year by year. Constructing ecological network is one of the effective methods to improve urban ecological environment and service function. Taking Yujiang County as the study area, the authors used morphological spatial pattern analysis and landscape index method to extract the ecological sources which are important to the ecological network, and constructed the comprehensive resistance surface based on the MCR model. The method of minimum cost path is used to generate potential corridors, and based on gravity model and intermediary center degree, the key corridors and steppe plaques are identified and extracted, so as to construct the potential ecological network of the study area. The results showed that the WMSPA method could be combined organically with the MCR model, and the potential ecological corridors in the study area could be identified by quantitative analysis, and the steppe plaque was selected according to the mediating effect of the patch, and the protection priority of landscape elements in the study area was determined. Taking the potential ecological source and corridor in the landscape as the main basis for the construction of ecological network can provide more scientific guidance for the construction of ecological network in Yujiang County and also provide reference for other regions.
【作者单位】：东华理工大学测绘工程学院;流域生态与地理环境监测国家测绘地理信息局重点实验室;江西省数字国土重点实验室;江西生态文明建设制度研究中心;
【基金】：江西省高校人文社会科学课题(GL1501) 流域生态与地理环境监测国家测绘地理信息局重点实验室资助课题(WE2016018) 东华理工大学江西省数字国土重点实验室开放研究基金项目(DLLJ201720)~~
【分类号】：X171.4

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