A case study of woodland continuity and change in the American Midwest
A case study of woodland continuity and change in the American Midwest
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美国中西部林地连续性和变化的案例研究
DOI：
10.1016/0006-3207(85)90071-0
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发表时间：
1985
期刊：
影响因子：
--
通讯作者：
William J. Somerlot
中科院分区：
文献类型：
--
作者：
G. Whitney;William J. Somerlot
在过去的200年里，美国中部丰富的阔叶林遭到破坏。对中西部一个有代表性的县的森林砍伐过程的详细分析表明，虽然几乎没有树栖物种被消灭，但更常见的物种的相对丰度已经发生了显著变化。讨论了将封禁林地转变为农田、森林碎片化、创造新的栖息地，即栅栏和次生林地，以及选择性砍伐和放牧剩余林地的长期影响。
The last 200 years have witnessed the destruction of the rich hardwood forests of the central portion of the United States. A detailed analysis of the process of deforestation in one representative county in the Midwest suggests that while few of the arboreal species have been eliminated, the relative abundance of the more common species has shifted significantly. The long-term effects of the conversion of closed woodland to cropland, the fragmentation of the forest, the creation of new habitats, i.e., fencerows and secondary woodlands, and the selective cutting and grazing of the remaining woodlots are discussed.