干旱区生态环境知识资源中心(Arid): Age- and climate- related water use patterns of apple trees on China's Loess Plateau

Arid

DOI	10.1016/j.jhydrol.2019.124462
	Age- and climate- related water use patterns of apple trees on China's Loess Plateau
	Wang, Shaofei 1,2; An, Juan 5; Zhao, Xining 3,4; Gao, Xiaodong 3,4; Wu, Pute 3,4; Huo, Gaopeng 1,2; Robinson, Brett H.6
通讯作者	Zhao, Xining
来源期刊	JOURNAL OF HYDROLOGY
ISSN	0022-1694
EISSN	1879-2707
出版年	2020
卷号	582
英文摘要	The Loess Plateau of China is a major apple-cultivating region, but much of the Plateau is water-limited, and the expansion of apple-growing is putting pressure on soil water resources. Plants' water consumption patterns have been intensively studied to facilitate formulation of robust agricultural strategies, but previous studies have generally applied indirect methods to characterize their water use. Moreover, the few studies that have applied direct (isotopic) methods have mostly focused on shallow (0-200 cm) soil layers, usually in stands of a single age or single climatic region. To avoid these limitations, we have investigated the primary water sources of apple trees of three ages (10, 15 and 22 years) in semiarid and semihumid climatic regions of the Plateau using both natural stable isotopic signatures (delta H-2 values) and injections of (H2O)-H-2 into deep soil layers. We found that water content in apple orchards' soil decreased with increases in depth and stand age, and was higher in the semihumid area than in the semiarid area. Nevertheless, patterns of apple trees' water uptake from shallow (0-300 cm) soil layers were similar in the two climatic regions and the main water sources became shallower with increases in stand age. However, water uptake from deep (400-500 cm) soil layers was also detected, particularly in the blossom and young fruit stage in apple orchards of the semiarid area. Moreover, older trees absorbed more water from these layers than younger trees in the semiarid area (but not in the semihumid area) throughout the growing season. Excessive consumption of deep soil water inevitably results in deep soil drying and severely threatens the sustainability of apple cultivation. Our work suggests that it is necessary to take actions (e.g. supplementary irrigation, landscaping and mulching combinations) to reduce the proportion of deep soil water used by apple trees to prevent the development of dried soil layers. It also highlights the need to assess uptake patterns of plants at multiple developmental stages and ages to identify times when and places where interventions may be required or most effective.
英文关键词	Water uptake patterns Shallow soil water Deep soil water Stable isotopes Artificial isotopes
类型	Article
语种	英语
国家	Peoples R China ; New Zealand
收录类别	SCI-E
WOS记录号	WOS:000517663700061
WOS关键词	EXTREME NATURAL DROUGHT ; SOIL-WATER ; VEGETATION RESTORATION ; GROUNDWATER RECHARGE ; STABLE-ISOTOPES ; DESERT SHRUBS ; RAIN-FOREST ; DEPTH ; ORCHARDS ; STRATEGIES
WOS类目	Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Engineering ; Geology ; Water Resources
来源机构	西北农林科技大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/314989
作者单位	1.Northwest A&F Univ, Key Lab Agr Soil & Water Engn Arid & Semiarid Are, Minist Educ, Yangling 712100, Shaanxi, Peoples R China; 2.Northwest A&F Univ, Coll Water Resources & Architectural Engn, Yangling 712100, Shaanxi, Peoples R China; 3.Northwest A&F Univ, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China; 4.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China; 5.Linyi Univ, Coll Resources & Environm, Inst Water & Soil Conservat & Environm Protect, Shandong Prov Key Lab Water & Soil Conservat & En, Linyi 276005, Shandong, Peoples R China; 6.Univ Canterbury, Sch Phys & Chem Sci, Canterbury, New Zealand
推荐引用方式 GB/T 7714	Wang, Shaofei,An, Juan,Zhao, Xining,et al. Age- and climate- related water use patterns of apple trees on China's Loess Plateau[J]. 西北农林科技大学,2020,582.
APA	Wang, Shaofei.,An, Juan.,Zhao, Xining.,Gao, Xiaodong.,Wu, Pute.,...&Robinson, Brett H..(2020).Age- and climate- related water use patterns of apple trees on China's Loess Plateau.JOURNAL OF HYDROLOGY,582.
MLA	Wang, Shaofei,et al."Age- and climate- related water use patterns of apple trees on China's Loess Plateau".JOURNAL OF HYDROLOGY 582(2020).