An Ecological Basis for Reforestation of Submarginal Lands in the Central Hardwood Region
An Ecological Basis for Reforestation of Submarginal Lands in the Central Hardwood Region
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中部硬木区次边缘土地重新造林的生态基础
DOI：
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发表时间：
1937
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影响因子：
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通讯作者：
A. G. Chapman
中科院分区：
文献类型：
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作者：
A. G. Chapman
中部硬木地区从俄亥俄州向西延伸，穿过爱荷华州，向南穿过肯塔基州和田纳西州的西半部，一直延伸到阿肯色州的阿肯色河。据估计，这一地区有5500万英亩的林地。此外，约有1500万英亩的亚边缘侵蚀土地不适合农业，这给该地区的植树造林带来了巨大的任务。虽然玉米带上许多破败或沟壑丛生的土地是一个重要的问题，但大多数有问题的土地位于冰川南界以南，代表着更广泛的问题(图2)。1)。
The Central Hardwood Region extends from Ohio westward through Iowa and south through the western half of Kentucky and Tennessee to the Arkansas River in Arkansas. Within this area, it has been estimated that 55 million acres are wooded. In addition, there are approximately 15 million acres of submarginal, eroding land, unfit for agriculture, which present the enormous task of reforestation in this region. While numerous areas of wornout or gullied lands in the Corn Belt present an important problem, most of the land in question lies south of the southern limit of glaciation and represents the more extensive problem (fig. 1).