Arid
DOI10.1016/j.palaeo.2014.05.020
Varied responses of forest at its distribution margin to Holocene monsoon development in northern China
Hao, Qian; Liu, Hongyan1; Yin, Yi; Wang, Hongya; Feng, Mingmin
通讯作者Liu, Hongyan
来源期刊PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
ISSN0031-0182
EISSN1872-616X
出版年2014
卷号409页码:239-248
英文摘要

Based on pollen analysis and other evidence in a sediment profile from Huangqihai Lake, located at the limit of Asian monsoon influence, the local vegetation development and climatic change were reconstructed for the past 8600 years. From 8600 to 7200 cal. yr BP, the local vegetation was dominated by steppe and tree cover was low. Then pine increased gradually, and the local vegetation was pine and oak mixed forest with variable ratios of the two dominant tree taxa from 7200 to 3600 cal. yr BP. From 3600 to 3000 cal. yr BP, the forest was replaced by shrubland, which was attributed to a period of intense drought. From 3000 to 600 cal. yr BP, the tree cover declined to its lowest levels, probably due to long-term further drought. After 600 cal. yr BP, steppe has become dominant again. We found that the changes of vegetation type indicated by pollen percentages did not match existing evidence for monsoon dynamics. Changes in tree pollen concentration, however, well captured the changes in the Asian monsoon, implying different sensitivity of vegetation cover and vegetation type (e.g. replacement of steppe by forest) to the monsoon development. In addition, a shrubland-dominated stage which has not been evident in previous studies was also clear in our pollen sequences. Our study implied that the responses of marginal forest to drought were variable, depending on the drought regime. The different responses of forest to climate drying in this study provide insights into the reliable prediction of forest dynamics in the semi-arid regions. (C) 2014 Elsevier B.V. All rights reserved.


英文关键词Palaeovegetation Forest-steppe ecotone Monsoon Drought Holocene
类型Article
语种英语
国家Peoples R China
收录类别SCI-E
WOS记录号WOS:000339144400018
WOS关键词CENTRAL TIBETAN PLATEAU ; ASIAN SUMMER MONSOON ; ARID CENTRAL-ASIA ; TREE MORTALITY ; CLIMATE-CHANGE ; INNER-MONGOLIA ; INDIAN MONSOON ; DAIHAI LAKE ; ENVIRONMENTAL-CHANGES ; CARBON CONCENTRATION
WOS类目Geography, Physical ; Geosciences, Multidisciplinary ; Paleontology
WOS研究方向Physical Geography ; Geology ; Paleontology
来源机构北京大学
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/184102
作者单位1.Peking Univ, Coll Urban & Environm Sci, Beijing 100871, Peoples R China;
2.Peking Univ, MOE Lab Earth Surface Proc, Beijing 100871, Peoples R China
推荐引用方式
GB/T 7714
Hao, Qian,Liu, Hongyan,Yin, Yi,et al. Varied responses of forest at its distribution margin to Holocene monsoon development in northern China[J]. 北京大学,2014,409:239-248.
APA Hao, Qian,Liu, Hongyan,Yin, Yi,Wang, Hongya,&Feng, Mingmin.(2014).Varied responses of forest at its distribution margin to Holocene monsoon development in northern China.PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY,409,239-248.
MLA Hao, Qian,et al."Varied responses of forest at its distribution margin to Holocene monsoon development in northern China".PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 409(2014):239-248.
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