气候变化领域集成服务门户(CCPortal): Transference of Robinia pseudoacacia water-use patterns from deep to shallow soil layers during the transition period between the dry and rainy seasons in a water-limited region

CCPortal

DOI	10.1016/j.foreco.2019.117727
	Transference of Robinia pseudoacacia water-use patterns from deep to shallow soil layers during the transition period between the dry and rainy seasons in a water-limited region
	Zhao Y.; Wang Y.; He M.; Tong Y.; Zhou J.; Guo X.; Liu J.; Zhang X.
发表日期	2020
ISSN	0378-1127
卷号	457
英文摘要	Soil water plays a critical role in determining plant survival and growth globally, especially in water-limited regions. This study explores water-use characteristics of Robinia pseudoacacia during the transition period between the dry and rainy seasons in the Chinese Loess Plateau (CLP). A stable isotope technique (δ18O and δD) and two complementary approaches (i.e., the direct inference method and the MixSIAR model) were used to distinguish water source changes during this transition period. Based on δ18O and δD distribution patterns, we subdivided a 500 cm soil profile into four potential water sources: shallow (0–40 cm), intermediate-shallow (40–120 cm), intermediate (120–200 cm) and deep (200–500 cm). During the transition period, R. pseudoacacia exhibited different water uptake patterns. In April 26.2% and 48.4% of water uptake derived from the 40 to 120 and 200 to 500 cm soil profile layers; in May, 21.5%, 24.5% and 37.4% of water was absorbed from the 0 to 40, 40 to 120 and 200 to 500 cm soil profile layers. In June and July, 51.6% and 53.6% of the water mainly derived from the 0 to 120 cm soil profile layer, respectively. During the dry season (April), the trend in water uptake shifted to the deep soil layer, potentially a key period for the onset of soil desiccation in this soil layer. As precipitation increased, the proportion of water uptake from the shallow and intermediate-shallow soil layers increased. Because water-use pattern characteristics could provide important information on the development of the dried soil layer (DSL), the stable isotope technique could help reveal the water sources used by trees while also offering insight into water movement mechanisms of local ecosystems. Given its usefulness, the application of the stable isotope technique should be expanded in analyzing practical ecohydrological issues that occur in deep soils in the future. © 2019 Elsevier B.V.
英文关键词	Dried soil layer; Robinia pseudoacacia; Stable isotopes; The Loess Plateau; Water uptake pattern
语种	英语
scopus关键词	Landforms; Sediments; Soil moisture; Dried soil layers; Loess Plateau; Robinia pseudo-acacia; Stable isotopes; Water uptake; Isotopes; deciduous tree; desiccation; dry season; ecohydrology; shallow soil; soil profile; stable isotope; water uptake; water use; Characteristics; Isotopes; Layers; Patterns; Profiles; Robinia; Sediments; China; Loess Plateau; Robinia pseudoacacia
来源期刊	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/155570
作者单位	State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, Shaanxi 710061, China; CAS Center for Excellence in Quaternary Science and Global Change, Xian, 710061, China; Interdisciplinary Research Center of Earth Science Frontier, Beijing Normal University, Beijing, 100875, China; Graduate University of Chinese Academy of Sciences, Beijing, 100049, China; State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences & Ministry of Water Resources, Yangling, 712100, China; Department of Earth and Environmental Sciences, Xi'an Jiaotong University, Xi'an, 710049, China
推荐引用方式 GB/T 7714	Zhao Y.,Wang Y.,He M.,et al. Transference of Robinia pseudoacacia water-use patterns from deep to shallow soil layers during the transition period between the dry and rainy seasons in a water-limited region[J],2020,457.
APA	Zhao Y..,Wang Y..,He M..,Tong Y..,Zhou J..,...&Zhang X..(2020).Transference of Robinia pseudoacacia water-use patterns from deep to shallow soil layers during the transition period between the dry and rainy seasons in a water-limited region.Forest Ecology and Management,457.
MLA	Zhao Y.,et al."Transference of Robinia pseudoacacia water-use patterns from deep to shallow soil layers during the transition period between the dry and rainy seasons in a water-limited region".Forest Ecology and Management 457(2020).