Vegetation Changes and Human Influences on Qian’an Basin Since the Middle Holocene
Vegetation Changes and Human Influences on Qian’an Basin Since the Middle Holocene
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迁安盆地中全新世以来植被变化及人类影响
DOI：
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发表时间：
2002-05
期刊：
影响因子：
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通讯作者：
许清海孔昭宸阳小兰 梁文栋孙黎明
中科院分区：
文献类型：
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作者：
许清海孔昭宸阳小兰 梁文栋孙黎明
根据燕山南部乾安盆地参古庙和于家洼剖面的孢粉分析资料，探讨了距今5000 aBP以来的植被变化和人类活动对自然环境的影响。研究表明：（1）4600 ~ 3100 aBP，以栎属为主的落叶阔叶林在盆地内生长;（2）3100 aBP后，阔叶林减少，松属增加，这是对气候变冷的响应;（3）1600 aBP以来，由于农业活动的增加，森林遭到严重破坏，（4）花粉分析表明，迁安盆地板栗栽培历史约1600年，水稻栽培历史约700年。
Vegetation changes and human influences on natural environments since 5 000 a BP were discussed based on the pollen data supported by radiocarbon dating from Cangumiao and Yujiawa profiles in Qian'an Basin, the southern area of Yanshan Mountain. The research indicates that (1) from 4 600 to 3 100 a BP, deciduous broad_leaved forests dominated by Quercus grew in the Basin, (2) after 3 100 a BP, broad_leaved species reduced and Pinus increased, in response to the cooling climate, (3) since 1 600 a BP, forests had been destroyed seriously due to the increase of agricultural activities, and (4) pollen analysis showed that Castanea trees had been cultivated for 1 600 years, and Oryza had been planted for 700 years in Qian'an Basin.