Geographical and climatic gradients of evergreen versus deciduous broad-leaved tree species in subtropical China: Implications for the definition of the mixed forest

doi:10.1371/journal.pone.0170286

	Geographical and climatic gradients of evergreen versus deciduous broad-leaved tree species in subtropical China: Implications for the definition of the mixed forest
	Ge, Jielin; Xie, Zongqiang
	2017
发表期刊	ECOLOGY AND EVOLUTION
ISSN	2045-7758
卷号	7 期号:11 页码:3636-3644
摘要	Understanding climatic influences on the proportion of evergreen versus deciduous broad-leaved tree species in forests is of crucial importance when predicting the impact of climate change on broad-leaved forests. Here, we quantified the geographical distribution of evergreen versus deciduous broad-leaved tree species in subtropical China. The Relative Importance Value index (RIV) was used to examine regional patterns in tree species dominance and was related to three key climatic variables: mean annual temperature (MAT), minimum temperature of the coldest month (MinT), and mean annual precipitation (MAP). We found the RIV of evergreen species to decrease with latitude at a lapse rate of 10% per degree between 23.5 and 25 degrees N, 1% per degree at 25-29.1 degrees N, and 15% per degree at 29.1-34 degrees N. The RIV of evergreen species increased with: MinT at a lapse rate of 10% per degrees C between -4.5 and 2.5 degrees C and 2% per degrees C at 2.5-10.5 degrees C; MAP at a lapse rate of 10% per 100mm between 900 and 1,600mm and 4% per 100mm between 1,600 and 2,250mm. All selected climatic variables cumulatively explained 71% of the geographical variation in dominance of evergreen and deciduous broad-leaved tree species and the climatic variables, ranked in order of decreasing effects were as follows: MinT>MAP>MAT. We further proposed that the latitudinal limit of evergreen and deciduous broad-leaved mixed forests was 29.1-32 degrees N, corresponding with MAT of 11-18.1 degrees C, MinT of -2.5 to 2.51 degrees C, and MAP of 1,000-1,630mm. This study is the first quantitative assessment of climatic correlates with the evergreenness and deciduousness of broad-leaved forests in subtropical China and underscores that extreme cold temperature is the most important climatic determinant of evergreen and deciduous broad-leaved tree species' distributions, a finding that confirms earlier qualitative studies. Our findings also offer new insight into the definition and distribution of the mixed forest and an accurate assessment of vulnerability of mixed forests to future climate change.
关键词	deciduousness extreme cold temperature forest delimitation leaf type mixed forest transitional zone
学科领域	Science & Technology - Other Topics
DOI	10.1371/journal.pone.0170286
收录类别	SCI
语种	英语
WOS关键词	TRADE-OFF ; PATTERNS ; TEMPERATURE ; PRECIPITATION ; DETERMINANTS ; CONSERVATION ; CANOPIES ; LIMITS ; MODEL ; COLD
WOS记录号	WOS:000394231800009
出版者	WILEY
文献子类	Article
出版地	HOBOKEN
资助机构	National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31600360] ; National Basic Research Program of ChinaNational Basic Research Program of China [2010CB951301] ; Special Research Program for Public-welfare Environmental Protection Projects of China [201309039] ; Chinese Academy of SciencesChinese Academy of Sciences [KFJ-SW-STS-167]
作者邮箱	xie@ibcas.ac.cn
作品OA属性	Green Published, Green Submitted, gold
引用统计	被引频次：11[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/22137
专题	植被与环境变化国家重点实验室
作者单位	Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Ge, Jielin,Xie, Zongqiang. Geographical and climatic gradients of evergreen versus deciduous broad-leaved tree species in subtropical China: Implications for the definition of the mixed forest[J]. ECOLOGY AND EVOLUTION,2017,7(11):3636-3644.
APA	Ge, Jielin,&Xie, Zongqiang.(2017).Geographical and climatic gradients of evergreen versus deciduous broad-leaved tree species in subtropical China: Implications for the definition of the mixed forest.ECOLOGY AND EVOLUTION,7(11),3636-3644.
MLA	Ge, Jielin,et al."Geographical and climatic gradients of evergreen versus deciduous broad-leaved tree species in subtropical China: Implications for the definition of the mixed forest".ECOLOGY AND EVOLUTION 7.11(2017):3636-3644.

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