Green sponge. Swift, L. The American Tree Farmer, 1983.
Green sponge. [pdf]Paper  abstract   bibtex   
Water yield should be a concern to the tree farmer. Choices in managing piedmont lands between pine or hardwood forests affect future streamflow amounts. As an example, average streamflow may be four area inches greater under hardwood management. However, the change in streamflow due to thinning and cutting previously unmanaged piedmont forest is greatest for pine stands.

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