云浮市生态安全格局构建方法研究

发布时间：2018-05-31 11:40

本文选题：生态安全 + 景观连通性　；参考：《江西理工大学》2017年硕士论文

【摘要】：生态安全格局是在掌握区域生境现状的基础上,为实现改善区域内环境问题和维护生态系统的目的,采用对范围内的人为、自然等要素进行规划设计和布局组合,从而获得由点、线、面构成的空间要素优化配置方案。构建生态安全格局作为实现区域生态安全的重要手段和途径,为生态环境管理和保护提供了新方法。本文以云浮市为研究区,基于生态安全、生态分析和景观生态学理论,采用RS和GIS技术,通过生态系统功能重要性评价、生态敏感性分析以及景观连通性分析来划定云浮市生态控制线范围,以识别区域内关键生态源地。在生态控制线线划结果的基础上,利用距离费用模型,构建云浮市关键生态廊道,且通过GIS空间分析技术构建云浮市综合生态安全格局。本文工作和研究的主要内容如下:(1)介绍了生态安全格局相关理论,及其构建方法和研究进展。通过分析云浮市实际地理特征情况,结合以往生态格局构建经验方法,确定出适合云浮市生态安全格局构建的方法。(2)对云浮市生态敏感性和生态功能重要性进行分析,根据研究区实际地理现状,选取影响云浮市生态系统的关键评价因子,通过多种分析评价方法,得出基于单一生态系统过程要素的生态安全格局,综合分析结果,以构建云浮市生态安全稳定性格局和云浮市生态服务功能重要性格局。(3)从景观生态学角度,依据研究区内生态斑块的连接程度,构建云浮市景观生态连通性格局。(4)应用GIS的空间分析技术,识别生态安全格局中的生态源地、关键生态廊道、生态节点,构建了云浮市综合生态安全格局。
[Abstract]:Ecological security pattern is based on the current situation of regional habitat, in order to achieve the purpose of improving the environmental problems in the region and maintaining the ecosystem, planning, design and layout combination of man-made, natural and other elements within the scope are adopted. Thus, the optimal allocation scheme of spatial elements composed of points, lines and surfaces is obtained. As an important means and way to realize regional ecological security, the construction of ecological security pattern provides a new method for ecological environment management and protection. Based on the theory of ecological security, ecological analysis and landscape ecology, this paper takes Yunfu City as the research area, adopts RS and GIS technology, and evaluates the importance of ecosystem function. Ecological sensitivity analysis and landscape connectivity analysis are used to delineate the range of ecological control line in Yunfu City to identify the key ecological sources in the region. Based on the result of ecological control line drawing, the key ecological corridor of Yunfu city was constructed by using distance cost model, and the comprehensive ecological security pattern of Yunfu city was constructed by GIS spatial analysis technology. The main contents of this paper are as follows: 1) the related theory of ecological security pattern, its construction method and research progress are introduced. Based on the analysis of the actual geographical characteristics of Yunfu City and the experience of constructing the ecological pattern in the past, the method of constructing the ecological security pattern in Yunfu City is determined. (2) the ecological sensitivity and the importance of ecological function of Yunfu City are analyzed. According to the actual geographical situation of the study area, the key evaluation factors affecting the ecosystem of Yunfu City are selected, and the ecological security pattern based on the process elements of a single ecosystem is obtained through a variety of analysis and evaluation methods, and the comprehensive analysis results are obtained. In order to construct the pattern of ecological security and stability in Yunfu city and the pattern of importance of ecological service function in Yunfu city, from the view of landscape ecology, according to the connection degree of ecological patches in the study area, The spatial analysis technology of GIS is used to identify the ecological source, the key ecological corridor and the ecological node in the ecological security pattern, and the comprehensive ecological security pattern of Yunfu city is constructed.
【学位授予单位】：江西理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：X321

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