干旱区生态环境知识资源中心(Arid): Precipitation and soil water thresholds associated with drought-induced mortality of farmland shelter forests in a semi-arid area

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DOI	10.1016/j.agee.2019.106595
	Precipitation and soil water thresholds associated with drought-induced mortality of farmland shelter forests in a semi-arid area
	Sun, Libo; Chang, Xiaomin; Yu, Xinxiao; Jia, Guodong; Chen, Lihua; Liu, Ziqiang; Zhu, Xuhui
通讯作者	Yu, Xinxiao
来源期刊	AGRICULTURE ECOSYSTEMS & ENVIRONMENT
ISSN	0167-8809
EISSN	1873-2305
出版年	2019
卷号	284
英文摘要	Shelter forests in the agricultural field are critical ecological barriers against harsh environmental conditions and agricultural soil erosion in northern China; however, shelter forests have been extensively degraded in the past decades. It is unknown how patterns of mortality of shelter forests relate to highly variable spatial precipitation and soil water content (SWC). Here, we explore the relationships of precipitation and SWC with the mortality of Populus simonii Carr (poplar) shelter forests in the semi-arid Bashang Plateau, northern China. Mortality of poplar shelter forests and its relationship with precipitation and SWC are spatially quantified in an area with an uneven distribution of precipitation by combining standard field plot measurements, precipitation, and SWC spatial distribution grid data. The mortality patterns of poplar shelter forests revealed threshold responses to precipitation and SWC, with lower mortality (< 32%) above 230 mm (precipitation) and an SWC > 16.56%. Results indicate that a threshold response is evident when precipitation is 60% of the average precipitation. In addition, our results show that wind speed, low temperature, and stand density also had significant effects on the mortality of poplar shelter forests. Our results show how precipitation and SWC patterns within a region influence the mortality of poplar shelter forests. Moreover, this study reveals other factors influencing stand structure and landscape heterogeneity, which have been largely overlooked in previous studies.
英文关键词	Drought Mortality Populus simonii Carr (poplar) Shelter forests Threshold
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000500212000017
WOS关键词	TREE MORTALITY ; CLIMATE-CHANGE ; DIE-OFF ; TEMPERATURE ; MECHANISMS ; EMBOLISM ; POPULUS ; DECLINE ; STRESS
WOS类目	Agriculture, Multidisciplinary ; Ecology ; Environmental Sciences
WOS研究方向	Agriculture ; Environmental Sciences & Ecology
EI主题词	2019-11-15
来源机构	北京林业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/310895
作者单位	Beijing Forestry Univ, Key Lab State Forestry Adm Soil & Water Conservat, Beijing 100083, Peoples R China
推荐引用方式 GB/T 7714	Sun, Libo,Chang, Xiaomin,Yu, Xinxiao,et al. Precipitation and soil water thresholds associated with drought-induced mortality of farmland shelter forests in a semi-arid area[J]. 北京林业大学,2019,284.
APA	Sun, Libo.,Chang, Xiaomin.,Yu, Xinxiao.,Jia, Guodong.,Chen, Lihua.,...&Zhu, Xuhui.(2019).Precipitation and soil water thresholds associated with drought-induced mortality of farmland shelter forests in a semi-arid area.AGRICULTURE ECOSYSTEMS & ENVIRONMENT,284.
MLA	Sun, Libo,et al."Precipitation and soil water thresholds associated with drought-induced mortality of farmland shelter forests in a semi-arid area".AGRICULTURE ECOSYSTEMS & ENVIRONMENT 284(2019).