干旱区生态环境知识资源中心(Arid): Prediction of Soil Water Thresholds for Trees in the Semi-Arid Region on the Loess Plateau

Arid

DOI	10.3390/pr10112354
	Prediction of Soil Water Thresholds for Trees in the Semi-Arid Region on the Loess Plateau
	Chi, Chunming; Wang, Jingjing; Zhi, Jinhu
通讯作者	Zhi, JH
来源期刊	PROCESSES
EISSN	2227-9717
出版年	2022
卷号	10 期号:11
英文摘要	It is important to obtain the soil water content threshold (theta(THR)) for agricultural water management. However, the measurement of theta(THR) is time consuming and needs specialized and expensive equipment. The accuracy of the empirical estimates is often low. Therefore, the development of a simple, rapid, and accurate prediction method for theta(THR) is the focus of the present study. The value of theta(THR) is regarded as the soil water content at the capillary break capacity (theta(CB)). A formula based on field capacity (theta(FC)) and soil bulk density (D-b) is proposed to calculate theta(CB), expressed as theta(CB)=theta(FC)-0.21*1-D-b/2.65. Six soils from six published studies on the response of tree physiological processes to water deficit were used to calculate theta(CB) using this formula. The calculated theta(CB) values were compared with the measured theta(THR). The results showed that the calculated theta(CB) values were nearly equal to the measured theta(THR). A highly significant (adj R-2 = 0.9826, p < 0.001) linear relationship with a slope of 0.9506 and a y intercept of 0.0072 was found between the calculated theta(CB) and measured theta(THR). The formula proposed in this study provides a novel approach for estimating the theta(THR) of trees in the semi-arid regions on the Loess Plateau.
英文关键词	soil water content of capillary break field capacity soil bulk density fraction of transpirable soil water
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000897751200001
WOS关键词	PHOTOSYNTHETIC EFFICIENCY ; TRANSPIRATION RESPONSE ; PHYSICAL QUALITY ; LEAF EXPANSION ; MOISTURE ; RANGE ; PRODUCTIVITY ; DEFICIT
WOS类目	Engineering, Chemical
WOS研究方向	Engineering
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/394078
推荐引用方式 GB/T 7714	Chi, Chunming,Wang, Jingjing,Zhi, Jinhu. Prediction of Soil Water Thresholds for Trees in the Semi-Arid Region on the Loess Plateau[J],2022,10(11).
APA	Chi, Chunming,Wang, Jingjing,&Zhi, Jinhu.(2022).Prediction of Soil Water Thresholds for Trees in the Semi-Arid Region on the Loess Plateau.PROCESSES,10(11).
MLA	Chi, Chunming,et al."Prediction of Soil Water Thresholds for Trees in the Semi-Arid Region on the Loess Plateau".PROCESSES 10.11(2022).