Landscape connectivity: A conservation application of graph theory
Landscape connectivity: A conservation application of graph theory
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DOI：
10.1006/jema.2000.0373
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发表时间：
2000-08-01
影响因子：
8.7
通讯作者：
Keitt, TH
中科院分区：
文献类型：
--
作者：
Bunn, AG;Urban, DL;Keitt, TH
我们使用焦点种分析应用图论方法在沿海平原的北卡罗来纳州景观连接。在这样做的时候，我们证明了实用的数学图作为生态建设方面的栖息地连接。图论是信息技术的一个成熟的支柱，它与高效的网络流有关。它采用了快速算法和紧凑的数据结构，很容易适应于生态系统级的重点物种分析。美国貂（Mustela vison）和原鼻莺（Protonotaria citrea）共享相同的栖息地，但有不同的传播能力，因此提供了有趣的比较景观中的连接。我们使用GIS覆盖率来定义栖息地斑块，并使用最小成本路径建模来确定斑块之间的功能距离。使用图形操作与边缘和节点删除，我们发现，景观是从根本上连接的貂和从根本上不连接的prothonotary莺。与其他建模技术相比，图论方法的优势在于它是一种启发式框架，可以在很少的数据下应用，并从初始结果中进行改进。我们展示了使用图论在集合种群的背景下，并建议，图论应用于保护生物学可以提供与景观连接的应用程序的杠杆作用。(C)北京大学出版社.
We use focal-species analysis to apply a graph-theoretic approach to landscape connectivity in the Coastal Plain of North Carolina. In doing so we demonstrate the utility of a mathematical graph as an ecological construct with respect to habitat connectivity. Graph theory is a well established mainstay of information technology and is concerned with highly efficient network flow. It employs fast algorithms and compact data structures that are easily adapted to landscape-level focal species analysis. American mink (Mustela vison) and prothonotary warblers (Protonotaria citrea) share the same habitat but have different dispersal capabilities, and therefore provide interesting comparisons on connections in the landscape. We built graphs using GIS coverages to define habitat patches and determined the functional distance between the patches with least-cost path modeling. Using graph operations concerned with edge and node removal we found that the landscape is fundamentally connected for mink and fundamentally unconnected for prothonotary warblers. The advantage of a graph-theoretic approach over other modeling techniques is that it is a heuristic framework which can be applied with very little data and improved from the initial results. We demonstrate the use of graph theory in a metapopulation context and suggest that graph theory as applied to conservation biology can provide leverage on applications concerned with landscape connectivity. (C) 2000 Academic Press.