Summary
The phenomenon of the compensation of growth factors is revealed with greatest clarity by partially cut forest stands. This paper reports the complete recovery of timber production by 50% thinned stands of red pine, Pinus resinosa Ait., achieved 15 years following cutting despite a decrease of 0.66% in the soil organic matter content. Regression analyses, relating fertility and transpiration requirements of trees to their output of merchantable wood, showed that the depletion of organic matter was balanced by an average annual increase of 76 mm of available water to the trees as a result of reduced interception of snow and rain in the thinned stands. The growth of the thinned stands was aided by the activity of roots of stumps grafted to roots of live trees.
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Contribution from the Department of Soil Science, University of Wisconsin-Madison, in collaboration with the Wisconsin Department of Natural Resources, the Department of Natural Resources, University of Wisconsin-Stevens Point, and the Nekoosa Edwards Paper Co. Published with approval of the Director, Research Division, College of Agricultural and Life Sciences, University of Wisconsin, Madison, Wisconsin 53706.
Contribution from the Department of Soil Science, University of Wisconsin-Madison, in collaboration with the Wisconsin Department of Natural Resources, the Department of Natural Resources, University of Wisconsin-Stevens Point, and the Nekoosa Edwards Paper Co. Published with approval of the Director, Research Division, College of Agricultural and Life Sciences, University of Wisconsin, Madison, Wisconsin 53706.
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Iyer, J.G., Shaw, B.H. & Dosen, R.C. Reciprocal growth effects of water and organic matter in soils of partially cut forest stands. Plant Soil 40, 409–412 (1974). https://doi.org/10.1007/BF00011524
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DOI: https://doi.org/10.1007/BF00011524