气候变化领域集成服务门户(CCPortal): Spatial patterns of precipitation-induced moisture availability and their effects on the divergence of conifer stem growth in the western and eastern parts of China's semi-arid region

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DOI	10.1016/j.foreco.2019.117524
	Spatial patterns of precipitation-induced moisture availability and their effects on the divergence of conifer stem growth in the western and eastern parts of China's semi-arid region
	Zeng X.; Evans M.N.; Liu X.; Wang W.; Xu G.; Wu G.; Zhang L.
发表日期	2019
ISSN	0378-1127
卷号	451
英文摘要	Conifer forests in semi-arid regions are fragile and sensitive to climate change. As the climate changes, more frequent drought and higher temperatures may reduce conifer stem growth in these regions, but moistening and lengthening of the growing season may improve tree growth conditions. The relative influences of specific climate parameters on conifer stem growth, however, remain poorly quantified in Asian regions. We analyzed conifer stem growth responses to climate in the semi-arid region of China. Our analyses show a wetting trend since 1960 in the western part of this region, versus a drying trend in the east. We used tree-ring width data from a network of 33 forests as inputs for the process-based Vaganov–Shashkin-Lite growth model to assess how moisture patterns have affected tree growth in this region, and then used the resulting model to predict changes in tree growth during the 21st century. Tree-ring growth in our study region is mainly controlled by precipitation and soil moisture, and shows significant impacts of antecedent moisture conditions (the “water memory effect”). However, the contribution of soil moisture to tree growth was stronger in the eastern vs. western sub-regions (77% vs. 69%). Pointer-year analysis showed significantly stronger growth responses to soil moisture in the early growing season (April to June) in positive pointer years in the eastern sub-region, but showed no difference in the western sub-region. These results indicate that tree-ring growth in the eastern sub-region is more vulnerable to moisture availability. Our simulations suggest that tree growth will increase slightly under the RCP 4.5 and RCP 8.5 scenarios in both sub-regions, possibly due to the prolongation of the growing season caused by climate warming. © 2019 Elsevier B.V.
英文关键词	Drought; Emission scenarios; Semi-arid; Tree rings; Vaganov–Shashkin-Lite model; Water memory effect
语种	英语
scopus关键词	Arid regions; Drought; Forestry; Soil moisture; Antecedent moisture; Climate parameters; Emission scenario; Memory effects; Semi arid; Semi-arid region; Spatial patterns; Tree rings; Climate change; climate change; coniferous forest; coniferous tree; divergence; drought; ecological modeling; growing season; growth; growth modeling; growth response; precipitation (climatology); semiarid region; soil moisture; spatial analysis; stem; tree ring; Drought; Forestry; Growing Season; Growth; Moisture; Rings; Soil; Trees; Coniferophyta
来源期刊	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/155778
作者单位	School of Geography and Tourism, Shaanxi Normal University, Xi'an, 710119, China; Department of Geology and Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD, United States; State Key Laboratory of Cryospheric Sciences, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, 730000, China; Key Laboratory of Mountain Surface Processes and Ecological Regulation, Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu, 610041, China; Pacific Northwest National Laboratory, Richland, 99352, United States; Laboratory of Tree-Ring Research, University of Arizona, Tucson, 85721, United States
推荐引用方式 GB/T 7714	Zeng X.,Evans M.N.,Liu X.,et al. Spatial patterns of precipitation-induced moisture availability and their effects on the divergence of conifer stem growth in the western and eastern parts of China's semi-arid region[J],2019,451.
APA	Zeng X..,Evans M.N..,Liu X..,Wang W..,Xu G..,...&Zhang L..(2019).Spatial patterns of precipitation-induced moisture availability and their effects on the divergence of conifer stem growth in the western and eastern parts of China's semi-arid region.Forest Ecology and Management,451.
MLA	Zeng X.,et al."Spatial patterns of precipitation-induced moisture availability and their effects on the divergence of conifer stem growth in the western and eastern parts of China's semi-arid region".Forest Ecology and Management 451(2019).