干旱区生态环境知识资源中心(Arid): Seasonal Divergent Tree Growth Trends and Growth Variability along Drought Gradient over Northeastern China

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DOI	10.3390/f10010039
	Seasonal Divergent Tree Growth Trends and Growth Variability along Drought Gradient over Northeastern China
	Shi, Fangzhong 1,2; Wu, Xiuchen 1,2; Li, Xiaoyan 1,2; Wang, Pei 3; Yang, Xiaofan 1,2; Li, Yuanqiao 1,2; Jiang, Xiaofei 1,2; Pei, Tingting 3; Bai, Yan 1,2; Hao, Bingyan 1,2; Zhang, Cicheng 1,2; Tong, Yaqin 1,2
通讯作者	Wu, Xiuchen
来源期刊	FORESTS
EISSN	1999-4907
出版年	2019
卷号	10 期号:1
英文摘要	With the increasing temperature and intensified drought, global climate change has profound impacts on tree growth in temperate regions, which consequently regulates terrestrial-atmosphere biogeochemical processes and biophysical feedbacks. Thus, increasing numbers of studies have addressed the long-term annual trends in tree growth and their response to climate change at diverse spatial scales. However, the potential divergence in tree growth trends and growth variability (represented by coefficient of variance) in different seasons across large-scale climate gradients remains poorly understood. Here, we investigated the tree growth trends and growth variability in different seasons across diverse drought conditions in forested regions over northeastern China during the period 1982-2015, using both remote sensing observations and in situ tree-ring measurements. We found clear seasonal divergence in tree growth trends during 1982-2015, and the apparent increase was mainly observed in spring and autumn, attributed mainly to the increase in spring temperature and autumn solar radiation, respectively, but not in summer. The magnitudes of increasing trends in tree growth decrease with the increase of the multi-year average dryness index (MAI) in semi-arid areas (1.5 < MAI < 4.0) in all seasons. We further revealed that the interannual variability in tree growth was much larger in the semi-arid regions than in the humid and semi-humid regions in all seasons, and tree growth variability was significantly and negatively correlated with the variations in temperature and water deficit. Our findings improve our understanding of seasonal divergence in tree growth trends and provide new insights into spatial patterns in forest vulnerability in a warmer and drier climate.
英文关键词	NDVI tree ring chronology interannual variability drought gradient MAI
类型	Article
语种	英语
国家	Peoples R China
开放获取类型	Green Submitted, gold
收录类别	SCI-E
WOS记录号	WOS:000458910800039
WOS关键词	CLIMATE-CHANGE ; VEGETATION GROWTH ; TIBETAN PLATEAU ; FOREST ; RESPONSES ; TEMPERATURE ; SENSITIVITY ; PHENOLOGY ; IMPACTS ; NDVI
WOS类目	Forestry
WOS研究方向	Forestry
来源机构	北京师范大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/215681
作者单位	1.Beijing Normal Univ, State Key Lab Earth Surface Proc & Resource Ecol, Beijing 100875, Peoples R China; 2.Beijing Normal Univ, Sch Nat Resources, Fac Geog Sci, Beijing 100875, Peoples R China; 3.Gansu Agr Univ, Sch Management, Lanzhou 730070, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Shi, Fangzhong,Wu, Xiuchen,Li, Xiaoyan,et al. Seasonal Divergent Tree Growth Trends and Growth Variability along Drought Gradient over Northeastern China[J]. 北京师范大学,2019,10(1).
APA	Shi, Fangzhong.,Wu, Xiuchen.,Li, Xiaoyan.,Wang, Pei.,Yang, Xiaofan.,...&Tong, Yaqin.(2019).Seasonal Divergent Tree Growth Trends and Growth Variability along Drought Gradient over Northeastern China.FORESTS,10(1).
MLA	Shi, Fangzhong,et al."Seasonal Divergent Tree Growth Trends and Growth Variability along Drought Gradient over Northeastern China".FORESTS 10.1(2019).