整合电路理论的生态廊道及其重要性识别
发布时间：2018-07-26 08:19
【摘要】：景观连接度被认为是影响诸多生态过程的一个重要因素.基于最小累积阻力模型的最小成本路径识别方法可以有效识别异质性景观中的功能连接,已被广泛应用到景观的功能连接评价与生态廊道模拟的研究中.基于电路理论的连接度模型用电阻代替了图论中的边、用电阻距离代替成本距离,来衡量异质性景观的功能连接.本文以SIMMAP 2.0软件生成的模拟景观为对象,借助于Linkage Mapper工具和Circuitscape软件,探讨如何将最小累积阻力模型与基于电路理论的连接度模型相结合来识别生态廊道及其景观要素的相对重要性.结果表明:两种模型在应用中各有优势,互为补充.最小成本路径方法可以有效识别栖息地之间的最小成本廊道,基于电路理论的连接度模型通过电流密度的计算可以有效识别对景观连接性有重要影响的景观要素和"夹点"地区,并且"夹点"的位置不受廊道宽度的影响,在廊道重要性识别研究中具有明显优势.该方法可为区域生态保护规划和生态廊道设计提供科学依据.
[Abstract]:Landscape connectivity is considered to be an important factor affecting many ecological processes. The minimum cost path identification method based on the minimum cumulative resistance model can effectively identify the functional connections in heterogeneous landscape, and has been widely used in the evaluation of the functional connections of the landscape and the study of ecological corridor simulation. The connectivity model based on circuit theory uses resistor instead of edge in graph theory and resistor distance instead of cost distance to measure the functional connection of heterogeneous landscape. This paper takes the simulated landscape generated by SIMMAP 2.0 software as the object, with the help of Linkage Mapper tools and Circuitscape software. This paper discusses how to identify the relative importance of ecological corridor and its landscape elements by combining the minimum cumulative resistance model with the connectivity model based on circuit theory. The results show that the two models have advantages and complement each other in application. The minimum cost path method can effectively identify the minimum cost corridors between habitats. The connectivity model based on circuit theory can effectively identify the landscape elements and "pinch points" which have an important impact on landscape connectivity through the calculation of current density, and the location of the "pinch" is not affected by the width of the corridor. It has obvious advantages in the research of corridor importance recognition. The method can provide scientific basis for regional ecological protection planning and ecological corridor design.
【作者单位】： 河南大学环境与规划学院;河南科技学院园艺园林学院;
【基金】：国家自然科学基金项目(41171439)资助~~
【分类号】：TU985.2
，
本文编号：2145418
[Abstract]:Landscape connectivity is considered to be an important factor affecting many ecological processes. The minimum cost path identification method based on the minimum cumulative resistance model can effectively identify the functional connections in heterogeneous landscape, and has been widely used in the evaluation of the functional connections of the landscape and the study of ecological corridor simulation. The connectivity model based on circuit theory uses resistor instead of edge in graph theory and resistor distance instead of cost distance to measure the functional connection of heterogeneous landscape. This paper takes the simulated landscape generated by SIMMAP 2.0 software as the object, with the help of Linkage Mapper tools and Circuitscape software. This paper discusses how to identify the relative importance of ecological corridor and its landscape elements by combining the minimum cumulative resistance model with the connectivity model based on circuit theory. The results show that the two models have advantages and complement each other in application. The minimum cost path method can effectively identify the minimum cost corridors between habitats. The connectivity model based on circuit theory can effectively identify the landscape elements and "pinch points" which have an important impact on landscape connectivity through the calculation of current density, and the location of the "pinch" is not affected by the width of the corridor. It has obvious advantages in the research of corridor importance recognition. The method can provide scientific basis for regional ecological protection planning and ecological corridor design.
【作者单位】： 河南大学环境与规划学院;河南科技学院园艺园林学院;
【基金】：国家自然科学基金项目(41171439)资助~~
【分类号】：TU985.2
，
本文编号：2145418
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