PreColumbian agriculture and forest disturbance in Costa Rica: palaeoecological evidence from two lowland rainforest lakes
PreColumbian agriculture and forest disturbance in Costa Rica: palaeoecological evidence from two lowland rainforest lakes
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哥斯达黎加前哥伦布时代的农业和森林干扰：来自两个低地雨林湖泊的古生态证据
DOI：
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发表时间：
1996
期刊：
影响因子：
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通讯作者：
S. Horn
中科院分区：
文献类型：
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作者：
Lisa A. Northrop;S. Horn
来自拉古纳博尼利亚和拉古纳博尼利塔的湖泊沉积物岩心提供了史前人类对哥斯达黎加低地雨林影响的第一批证据。更长的博尼利塔沉积物记录了公元前2560年湖岸的永久定居，比以前从考古记录中推断的要早大约600年。两个湖泊岩芯中的玉米花粉和木炭碎片表明了一种生存策略，其中包括玉米种植和一些火的使用。约1300 BP的Myrsine花粉百分比急剧下降表明这种木本植物的局部根除，可能是由于土地清理和/或Myrsine用于建筑。
Lake-sediment cores from Laguna Bonilla and Laguna Bonillita provide some of the first evidence of prehistoric human impacts on lowland rainforests in Costa Rica. The longer Bonillita sediment record docu ments permanent settlement of the lake shores by 2560 BP, about 600 years earlier than previously inferred from the archaeological record. Zea pollen and charcoal fragments in cores from both lakes indicate a subsist ence strategy that included maize cultivation and some use of fire. A dramatic decline in Myrsine pollen percentages about 1300 BP suggests local eradication of this woody plant, likely as a result of land clearance and/or the use of Myrsine for construction.