干旱区生态环境知识资源中心(Arid): Severe drought strongly reduces water use and its recovery ability of mature Mongolian Scots pine (Pinus sylvestris var. mongolica Litv.) in a semi-arid sandy environment of northern China

Arid

DOI	10.1007/s40333-019-0029-2
	Severe drought strongly reduces water use and its recovery ability of mature Mongolian Scots pine (Pinus sylvestris var. mongolica Litv.) in a semi-arid sandy environment of northern China
	Dang Hongzhong 1; Zhang Lizhen 2; Yang Wenbin 1; Feng Jinchao 1; Han Hui 3; Chen Yiben 4
通讯作者	Dang Hongzhong
来源期刊	JOURNAL OF ARID LAND
ISSN	1674-6767
EISSN	2194-7783
出版年	2019
卷号	11 期号:6 页码:880-891
英文摘要	Trees growing in a semi-arid sandy environment are often exposed to drought conditions due to seasonal variations in precipitation, low soil water retention and deep groundwater level. However, adaptability and plasticity of individuals to the changing drought conditions greatly vary among tree species. In this study, we estimated water use (T-s) of Mongolian Scots pine (MSP; Pinus sylvestris var. mongolica Litv.) based on sap flux density measurements over four successive years (2013-2016) that exhibited significant fluctuations in precipitation in a semi-arid sandy environment of northern China. The results showed that fluctuations in daily T-s synchronously varied with dry-wet cycles of soil moisture over the study period. The daily ratio of water use to reference evapotranspiration (T-s/ET0) on sunny days in each year showed a negative linear relationship with the severity of drought in the upper soil layer (0-1 m; P<0.01). The decrease in Ts induced by erratic drought during the growing season recovered due to precipitation. However, this recovery ability failed under prolonged and severe droughts. The T-s/ET0 ratio significantly declined with the progressive reduction in the groundwater level (g(w)) over the study period (P<0.01). We concluded that the upper soil layer contributed the most to the T-s of MSP during the growing season. The severity and duration of droughts in this layer greatly reduced T-s. Nevertheless, g(w) determined whether the T-s could completely recover after the alleviation of long-term soil drought. These results provide practical information for optimizing MSP management to stop ongoing degradation in the semi-arid sandy environments.
英文关键词	groundwater soil water availability water stress sap flow reference evapotranspiration
类型	Article
语种	英语
国家	Peoples R China
开放获取类型	Bronze
收录类别	SCI-E
WOS记录号	WOS:000495062100001
WOS关键词	SAP-FLOW MEASUREMENTS ; SOIL ; TRANSPIRATION ; FOREST ; STAND ; TREES ; LAND ; DECLINE ; STORAGE ; REGION
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
EI主题词	2019-11-07
来源机构	中国农业大学 ; 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/2XILL650/310778
作者单位	1.Chinese Acad Forestry, Inst Desertificat Studies, Beijing 100091, Peoples R China; 2.China Agr Univ, Inst Resources & Environm, Beijing 100094, Peoples R China; 3.Inst Sand Fixat & Afforestn Liaoning Prov, Fuxing 123000, Peoples R China; 4.Beijing Forestry Univ, Beijing 100083, Peoples R China
推荐引用方式 GB/T 7714	Dang Hongzhong,Zhang Lizhen,Yang Wenbin,et al. Severe drought strongly reduces water use and its recovery ability of mature Mongolian Scots pine (Pinus sylvestris var. mongolica Litv.) in a semi-arid sandy environment of northern China[J]. 中国农业大学, 北京林业大学,2019,11(6):880-891.
APA	Dang Hongzhong,Zhang Lizhen,Yang Wenbin,Feng Jinchao,Han Hui,&Chen Yiben.(2019).Severe drought strongly reduces water use and its recovery ability of mature Mongolian Scots pine (Pinus sylvestris var. mongolica Litv.) in a semi-arid sandy environment of northern China.JOURNAL OF ARID LAND,11(6),880-891.
MLA	Dang Hongzhong,et al."Severe drought strongly reduces water use and its recovery ability of mature Mongolian Scots pine (Pinus sylvestris var. mongolica Litv.) in a semi-arid sandy environment of northern China".JOURNAL OF ARID LAND 11.6(2019):880-891.