干旱区生态环境知识资源中心(Arid): Morphological trait as a determining factor for Populus simonii Carr. to survive from drought in semi-arid region

Arid

DOI	10.1016/j.agwat.2021.106943
	Morphological trait as a determining factor for Populus simonii Carr. to survive from drought in semi-arid region
	Liu Zihe; Jia Guodong; Yu Xinxiao; Lu Weiwei; Sun Libo; Wang Yusong; Baheti, Zierdie
通讯作者	Jia, GD (corresponding author), Beijing Forestry Univ, Key Lab Soil & Water Conservat & Desertificat Com, Minist Educ, Beijing 100083, Peoples R China.
来源期刊	AGRICULTURAL WATER MANAGEMENT
ISSN	0378-3774
EISSN	1873-2283
出版年	2021
卷号	253
英文摘要	Widespread tree mortality induced by drought events causes significant damage to the local ecosystem and society. Populus simonii Carr. in Zhangbei, Bashang region, China, which was the dominant species of local shelter forest, experienced a wide and heterogeneous dieback, calling for an urgent need for research revealing the mechanism of this mortality event. We conducted a field survey across the county examining 443 poplar individuals with different degrees of degradation. Basic morphological tree data and tree-ring samples were obtained and analysed. The stable water isotope technique was also applied to predict the water use pattern and rooting depth. Long-term climate data were analysed and the self-calibrating Palmer drought severity index (scPDSI) was calculated. The main results were as follows: 1) The growth rate of diameter at breast height (DBH) and tree height began to decrease after the year 2000; however, this drawback effect tended to be stronger for poplars with a higher degradation degree. The results also showed that the poplars that survived were inherently larger in size. 2) Following the increase in the degree of degradation, poplars gradually lost their ability to absorb deep soil water, putting them into a more stressful water condition. We concluded that ageing and stand density were not the major effects but drought accounted for the mortality event. Larger poplars with deeper root systems tended to be more resistant to drought. Local water resource management is also vital for shelterbelt forests to survive and grow.
英文关键词	Poplar Plantation Mortality Tree age Tree size Root
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000657165400001
WOS关键词	ROCKY MOUNTAINOUS AREA ; XYLEM VESSEL DIAMETER ; WATER-USE EFFICIENCY ; WOODY ANGIOSPERMS ; PLANT WATER ; TREE HEIGHT ; LAND-USE ; MORTALITY ; FOREST ; MECHANISMS
WOS类目	Agronomy ; Water Resources
WOS研究方向	Agriculture ; Water Resources
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/2XILL650/349350
作者单位	[Liu Zihe; Jia Guodong; Yu Xinxiao; Sun Libo; Wang Yusong; Baheti, Zierdie] Beijing Forestry Univ, Key Lab Soil & Water Conservat & Desertificat Com, Minist Educ, Beijing 100083, Peoples R China; [Lu Weiwei] Chinese Acad Forestry, Inst Desertificat Studies, Beijing 100091, Peoples R China
推荐引用方式 GB/T 7714	Liu Zihe,Jia Guodong,Yu Xinxiao,et al. Morphological trait as a determining factor for Populus simonii Carr. to survive from drought in semi-arid region[J]. 北京林业大学,2021,253.
APA	Liu Zihe.,Jia Guodong.,Yu Xinxiao.,Lu Weiwei.,Sun Libo.,...&Baheti, Zierdie.(2021).Morphological trait as a determining factor for Populus simonii Carr. to survive from drought in semi-arid region.AGRICULTURAL WATER MANAGEMENT,253.
MLA	Liu Zihe,et al."Morphological trait as a determining factor for Populus simonii Carr. to survive from drought in semi-arid region".AGRICULTURAL WATER MANAGEMENT 253(2021).