Precipitation dominates the transpiration of both the economic forest (Malus pumila) and ecological forest (Robinia pseudoacacia) on the Loess Plateau after about 15 years of water depletion in deep soil

doi:10.1016/j.agrformet.2020.108244

	Precipitation dominates the transpiration of both the economic forest (Malus pumila) and ecological forest (Robinia pseudoacacia) on the Loess Plateau after about 15 years of water depletion in deep soil
	Wu, Wenjie 5; Li, Huijie 6; Feng, Hao 3,5,7; Si, Bingcheng 1,6; Chen, Guangjie 5; Meng, Tingfang 7; Li, Yue 5; Siddique, Kadambot H. M.2,4
刊名	AGRICULTURAL AND FOREST METEOROLOGY
	2021-02-15
卷号	297 页码:11
关键词	Soil desiccation Deep soil water Soil water deficit Stable isotope Sap flow Transpiration
ISSN号	0168-1923
DOI	10.1016/j.agrformet.2020.108244
通讯作者	Feng, Hao(nercwsi@vip.sina.com) ; Si, Bingcheng(Bing.Si@usask.ca)
英文摘要	Understanding how different tree species consume soil water is critical for land management, especially in areas with limited water resources. This study examined the soil water consumption characteristics of two exotic tree species-economic forest apple tree (Malus pumila) and ecological forest black locust (Robinia pseudoacacia)-and the effect of soil desiccation on plant transpiration in the 2018 growing season in a semi-arid region of the Loess Plateau. We investigated root distribution and deep soil water content in the vertical soil profile and used hydrogen and oxygen stable isotopes to identify the contribution of water to transpiration in shallow (0-2 m) and deep (>2 m) soil. We also measured sap flow changes using thermal dissipation probes during the growing season. The apple orchard had a maximum rooting depth of about 16 m, with a deep soil water deficit of about 771 mm. The corresponding figures for the black locust forest were about 25 m and 1926 mm. In previous years, the apple trees consumed 51.4 mm yr(-1) of deep soil water and black locust consumed 120.4 mm yr(-1). In the 2018 growing season, soil water content varied from 0-200 cm depth, with no significant changes beyond 200 cm in either species. Shallow soil water contributed, on average, 68.1% and 80.9% to transpiration in the apple orchard and black locust forest, respectively, and both they had a similar amount of transpiration during the growing season. These results indicate that rapid deep soil desiccation leads to a lack of sustainable root water uptake in deep soil, and the dominance of transpiration by precipitation in this region. This study increased our understanding on how intensive water extraction from deep soil affects tree transpiration, which is significant for sustainable afforestation in the Loess Plateau and other regions with similar hydrogeology.
资助项目	National Natural Science Foundation of China[41630860] ; National Natural Science Foundation of China[41371233] ; National Natural Science Foundation of China[41601222] ; Fundamental Research Funds for the Central Universities[2452017317] ; 111 Project of the Ministry of Education ; State Administration of Foreign Experts Affairs[B12007]
WOS关键词	SAP FLUX-DENSITY ; APPLE-TREES ; GROUNDWATER RECHARGE ; STABLE-ISOTOPES ; SEMIARID REGION ; ROOTING DEPTH ; RAIN-FOREST ; FLOW ; DROUGHT ; PLANTS
WOS研究方向	Agriculture ; Forestry ; Meteorology & Atmospheric Sciences
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000608676000010
资助机构	National Natural Science Foundation of China ; Fundamental Research Funds for the Central Universities ; 111 Project of the Ministry of Education ; State Administration of Foreign Experts Affairs
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/136363]
专题	中国科学院地理科学与资源研究所
通讯作者	Feng, Hao; Si, Bingcheng
作者单位	1.Univ Saskatchewan, Dept Soil Sci, Saskatoon, SK S7N 5A8, Canada 2.Univ Western Australia, Sch Agr & Environm, LB 5005, Perth, WA 6001, Australia 3.Northwest A&F Univ, Inst Water Saving Agr Arid Areas China, Yangling 712100, Shaanxi, Peoples R China 4.Univ Western Australia, UWA Inst Agr, LB 5005, Perth, WA 6001, Australia 5.Northwest A&F Univ, Coll Water Resources & Architectural Engn, Yangling 712100, Shaanxi, Peoples R China 6.Ludong Univ, Coll Resources & Environm Engn, Yantai 264025, Shandong, Peoples R China 7.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Wu, Wenjie,Li, Huijie,Feng, Hao,et al. Precipitation dominates the transpiration of both the economic forest (Malus pumila) and ecological forest (Robinia pseudoacacia) on the Loess Plateau after about 15 years of water depletion in deep soil[J]. AGRICULTURAL AND FOREST METEOROLOGY,2021,297:11.
APA	Wu, Wenjie.,Li, Huijie.,Feng, Hao.,Si, Bingcheng.,Chen, Guangjie.,...&Siddique, Kadambot H. M..(2021).Precipitation dominates the transpiration of both the economic forest (Malus pumila) and ecological forest (Robinia pseudoacacia) on the Loess Plateau after about 15 years of water depletion in deep soil.AGRICULTURAL AND FOREST METEOROLOGY,297,11.
MLA	Wu, Wenjie,et al."Precipitation dominates the transpiration of both the economic forest (Malus pumila) and ecological forest (Robinia pseudoacacia) on the Loess Plateau after about 15 years of water depletion in deep soil".AGRICULTURAL AND FOREST METEOROLOGY 297(2021):11.