From 1962 through 1998, 20 prescribed burns were applied in a natural stand of longleaf pine (Pinus palustris Mill.) to determine the effects of various fire regimes on the forest plant community. The original longleaf seedlings regenerated from the 1955 seed crop and were growing in a grass-dominated cover when the study began. By 1999, prescribed burning in March and May resulted in a significantly greater stocking of longleaf pine (203 trees/ac) than on the unburned and July burned treatments (72 trees/ac) (α = 0.05). Fire arrested the growth of natural loblolly pine (P. taeda L.) and hardwoods, but loblolly pines and hardwoods of at least 4 in. dbh added 70 ft2/ac of basal area on the unburned plots. Thus, total woody basal area was significantly greater on the unburned (117 ft2/ac) and May burned (132 ft2/ac) treatments than on the July burned treatment (66 ft2/ac); basal area was intermediate on the March burned treatment (97 ft2/ac). Pine volume was 4,315, 2,870, 2,652, and 1,970 ft3 inside-bark/ac on the May burned, March burned, unburned, and July burned treatments, respectively, but these differences were not statistically significant (P = 0.06). There was only 11 lb/ac of herbaceous plants on the unburned plots. Herbaceous plants averaged 993 lb/ac on the three burned treatments, with pinehill bluestem (Schizachyrium scoparium var. divergens [Hack] Gould) being the most common herbaceous plant. We believe the chief influence of burning in this natural longleaf pine forest was not on pine yield but how fires influenced overall stand structure and species composition. South. J. Appl. For. 25(3):122–130.
No Supplementary Data
Pinus palustris Mill.;
Pinus taeda L.;
Schizachyrium scoparium var. divergens Hack Goul;
natural resource management;
Document Type: Miscellaneous
Southern Research Station, Kisatchie National Forest, and Southern Research Station, USDA Forest Service, Pineville, LA, 71360
Retired Southern Research Station, Kisatchie National Forest, and Southern Research Station, USDA Forest Service, Pineville, LA, 71360
Emeritus Scientist Trinity Valley Community College, Athens, TX, 75751
Publication date: 2001-08-01
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Each regional journal of applied forestry focuses on research, practice, and techniques targeted to foresters and allied professionals in specific regions of the United States and Canada. The Southern Journal of Applied Forestry covers an area from Virginia and Kentucky south to as far west as Oklahoma and east Texas.
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