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原文連結
論文資訊
- 類型：已發表論文
- 日期：2009
摘要
A change in the environmental conditions across space for example, altitude or latitude-can cause significant changes in the density of a vegetation type and, consequently, in spatial connectivity. We use spatially explicit simulations to study the transition from connected to fragmented vegetation. A static (gradient 滲流) model is compared to dynamic (gradient contact process) models. Connectivity is characterized from the perspective of various 物種 that use this vegetation type for habitat and differ in dispersal or migration range, that is, "step length" across the landscape. The boundary of connected vegetation delineated by a particular step length is termed the "hull edge." We found that for every step length and for every gradient, the hull edge is a 碎形 with dimension 7/4. The result
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