Secondary forest succession in a tropical dry forest: patterns of development across a 50-year chronosequence in lowland Bolivia

被引:169
作者
Kennard, DK [1 ]
机构
[1] Univ Florida, Dept Bot, Gainesville, FL 32611 USA
关键词
disturbance history; forest management; forest structure; secondary forests; species richness; succession; tropical dry forests;
D O I
10.1017/S0266467402002031
中图分类号
Q14 [生态学(生物生态学)];
学科分类号
071012 ; 0713 ;
摘要
Stand structure, species richness and population structures of tree species were characterized in 12 stands representing 50 y of succession following slash-and-burn agriculture in a tropical dry forest in lowland Bolivia. Estimates of tree species richness, canopy cover and basal area reached or surpassed 75% of mature forest levels in the 5-, 8-, and 23-y-old stands respectively. Total stem density of the 50-y-old stand was almost twice that of the mature forest stand. This rapid recovery may be due to a high percentage of sprouting tree species, potentially high seed fall into abandoned fields, or the disturbance history of the mature stand. The even-aged size-class structures, dominance of long-lived pioneers, and presence of charcoal and pottery shards in soils of the mature forest stand suggest it formed after a severe disturbance, possibly fire of anthropogenic origin.
引用
收藏
页码:53 / 66
页数:14
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