THINNING YOUNG LOBLOLLY-PINE STANDS WITH FIRE

被引：30

作者：

WADE, DD

机构：

[1] USDA Forest Service, Southern Forest Fire Laboratory, Dry Branch, GA, 31020

来源：

INTERNATIONAL JOURNAL OF WILDLAND FIRE | 1993年 / 3卷 / 03期

关键词：

Fire effects; Georgia; Stand density control; Tree mortality; USA;

D O I：

10.1071/WF9930169

中图分类号：

S7 [林业];

学科分类号：

0829 ; 0907 ;

摘要：

The relationship between fire-caused stem girdling and groundline diameter (GLD) in loblolly pine (Pinus taeda L.) was determined. Results of 10 experimental prescribed bums conducted across a wide range of ambient temperature conditions during both the dormant and growing season demonstrate that low-intensity backing fires (< 346 KW/m) are an effective tool to eliminate loblolly pines less than 3.8 cm (1.5 in.) GLD. Wide differences in ambient temperature at time of burning did not affect stem kill of unscorched trees in this study. Virtually all fire-caused mortality took place within four months postburn. A predictive model that explained 92% of the variation in mortality was developed to facilitate the use of fire to thin young, overcrowded loblolly pine stands in the southeastern United States. Use of this model in conjunction with a preburn stand survey allows estimation of the number and distribution of survivors prior to ignition.

引用

页码：169 / 178

页数：10

共 27 条

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