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原文連結
論文資訊
- 類型：已發表論文
- 日期：2018-03-25
摘要
In tropical regions, fires propagate readily in grasslands but typically consume only edges of 森林 patches. Thus, 森林 patches grow due to tree propagation and shrink by fires in surrounding grasslands. The interplay between these competing edge effects is unknown, but critical in determining the shape and stability of individual 森林 patches, as well the landscape-level spatial distribution and stability of 森林s. We analyze high-resolution remote-sensing data from protected Brazilian Cerrado areas and find that 森林 shapes obey a robust perimeter-area 縮放律 relation across climatic zones. We explain this 縮放律 by introducing a heterogeneous fire propagation model of tropical 森林-grassland ecotones. Deviations from this perimeter-area relation determine the stability of individual 森林 patches. At a larg
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