Changes in forest composition over the last 4000 years in the Ituri basin, Zaire
Changes in forest composition over the last 4000 years in the Ituri basin, Zaire
复制标题
扎伊尔伊图里盆地过去 4000 年森林组成的变化
DOI：
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发表时间：
1996
期刊：
影响因子：
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通讯作者：
M. Ataholo
中科院分区：
文献类型：
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作者：
T. Hart;J. Hart;R. Dechamps;M. Fournier;M. Ataholo
木炭回收坑中的混合森林和森林为主的Gilbertiodendron dewevrei在伊图里流域东北扎伊尔提供了4000年的植被变化记录。从1817个木炭样品中鉴定出36种乔木、灌木和藤本植物; 28个样品进行了放射性碳定年。整个时期都存在圭亚那-刚果雨林。亚历山大Cynometra在当代森林和木炭中都很常见。森林组成的两个显着变化是G的缺失。dewevrei在木炭，和消失的当代植物群的Lebruniodendron leptanthum，最常见的物种在木炭。木炭分布和日期表明，火灾是广泛的，但可能大多是小。过去两千年来火灾频率的增加可能反映了气候波动和人类活动。
Charcoal recovered from pits in mixed forest and forest dominated by Gilbertiodendron dewevrei in the Ituri watershed of NE Zaire provide a 4000 year record of vegetation change. 36 tree, shrub and liana species were identified from 1817 charcoal samples; 28 samples were radiocarbon-dated. Guineo-Congolian rain forest was present throughout the period. Cynometra alexandri is common in both the contemporary forest and the charcoal. Two notable changes in forest composition are the absence of G. dewevrei in the charcoal, and the disappearance from the contemporary flora of Lebruniodendron leptanthum, the most frequently identified species in the charcoal. Charcoal distribution and dates indicate that fires were widespread but probably mostly small. Increase in fire frequency in the last two millennia may reflect climate fluctuations and human activity.