气候变化领域集成服务门户(CCPortal): 甘青地区中晚全新世植被变化与人类活动

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	甘青地区中晚全新世植被变化与人类活动
其他题名	Study on the relationship betwen the vegetation change and the human activities in the Qansu-Qinghai region during the preiod from mid-to late-holocene
	安成邦; 陈发虎; 冯兆东
发表日期	2002
ISSN	1000-6060
卷号	25 期号:2 页码:160-164
中文摘要	史前时期人类对环境的影响是近几年来国际研究的热点。在甘青地区，全新世的孢粉资料比较多。但在中晚全新世，该区人类对环境的影响作用及其程度仍不清楚，许多孢粉分析资料中并没有充分考虑人类活动的影响。本文选取孢粉分辨率较高、代表性较好的青海湖、兰州、秦安大地湾三地的资料，着重研究了其中乔木成分的变化。分析发现，孢粉组合中乔木成分的变化与气候变化的趋势并不一致。通过对考古及历史资料的分析，笔者认为，该区的植被很早就受到人类活动的影响。自全新世中期，本区植被中的乔木成分波动下降。5000－3000a BP期间，史前农业对植被的影响较大。3000－2000a BP期间，植被略有恢复。2000a BP以后，人为影响加剧，植被中乔木成分迅速下降。研究者认为，依赖孢粉资料重建中晚全新的气候变化历史应当慎重。
英文摘要	A great attention has been paid to the influence of prehistoric human activities on environment. The Gansu-Qinhai region is one of the regions where the prehistoric culture was developed early in China. This paper discusses the relationship between the vegetation change and the human activities in this region during the period from mid- to late-Holocene based on the high-resolving-power spore-pollen data, archaeological studies and historical documents. It is considered that the vegetation in the region has been influenced by human activities since very early time. In the vegetation in the region the proportion of arbors has decreased in a fluctuation way since mid-Holocene. The vegetation was seriously impacted by the prehistoric agriculture during the period of 5, 0003,000 a B.P. and it was restored slightly during the period of 3,0002,000 a B.P. The proportion of arbors in the vegetation has been sharply decreased with the increase of human activities since 2,000 a B.P. It is considered that it should be paid a great care to rebuild the climate during the period from mid- to late-Holocene with pollen data.
关键词	甘青地区中晚全新世植被人类活动
英文关键词	Gansu-Qinghai region;mid- to late-Holocene;vegetation;human activity
语种	中文
WOS研究方向	Geology
WOS类目	GEOLOGY
CSCD记录号	CSCD:990151
来源期刊	干旱区地理
来源机构	兰州大学 ; 中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/1872
推荐引用方式 GB/T 7714	安成邦,陈发虎,冯兆东. 甘青地区中晚全新世植被变化与人类活动[J]. 兰州大学, 中国科学院青藏高原研究所,2002,25(2):160-164.
APA	安成邦,陈发虎,&冯兆东.(2002).甘青地区中晚全新世植被变化与人类活动.干旱区地理,25(2),160-164.
MLA	安成邦,et al."甘青地区中晚全新世植被变化与人类活动".干旱区地理 25.2(2002):160-164.