Tree Growth as Affected by Soil Moisture Availability
1964
Bassett, John R.
Merchantable volume growth in a managed southern pine forest was measured every 3 years from 1940 through 1960. Available soil moisture in the surface foot was estimated for each day of the 21 growing seasons. The soil-moisture estimates were combined with estimates of potential evapotranspiration to calculate indexes of potential growth. Linear regressions of measured growth on calculated potential growth explained 95 to 97% of the variation about the regression lines. With sufficient soils information and past measurements of growth, foresters may be able to estimate current annual growth in timber stands.
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