Tracing the soil water response to autumn rainfall in different land uses at multi-day timescale in a subtropical zone

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 城市与区域生态国家重点实验室

	Tracing the soil water response to autumn rainfall in different land uses at multi-day timescale in a subtropical zone
	Sun, Long ; Yang, Lei ; Chen, Liding ; Li, Shoujuan 2; Zhao, Fangkai 2; Sun, Shiqiang 3
刊名	CATENA
	2019-09-01
卷号	180 页码:355-364
关键词	Water conservation Soil water response Hydrogen and oxygen isotope Soil buffer Rainfall event
ISSN号	0341-8162
英文摘要	Identifying the soil water response processes to rainfall events can provide scientific guidance to sustain and enhance ecosystem services of the terrestrial ecosystem. This study presents the results of soil water content and isotopic compositions response to a typical rainfall in the subtropical zone in east China. The response of soil water (including soil water content, hydrogen and oxygen isotope ratios) to rainfall event at three soil layers (0-10, 10-20, 20-30 cm) in two croplands, two orchards (tea and peach), and two forests were analyzed. The results showed that soil water recharge processes were varied in different land uses. The variation in the isotopic composition of soil water showed a hysteresis pattern, and this pattern was affected by land use types. The extents of isotopes depletion in topsoil (0-10 cm) were along the sequence of forest (9.90%) < orchard (10.86%) < cropland (13.70%), in contrast to the reduction of soil water content (17.46% in cropland, 32.06% in forest, and 41.78% in orchard). Little depletion in isotopes indicated limited evaporation effect on soil water, and the corresponding large reduction in water content suggested large infiltration or water recharge into deep soil, these implying a good water buffer for forest soils compared with crop soils. Soil texture and antecedent soil water were the main factors influencing the variations of both soil water content and isotopic compositions. The identification of different soil water changing processes may be important for water management and plant available water evaluation.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/42477]
专题	生态环境研究中心_城市与区域生态国家重点实验室
作者单位	1.Ningbo Meteorol Observ, Ningbo 315012, Zhejiang, Peoples R China 2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Sun, Long,Yang, Lei,Chen, Liding,et al. Tracing the soil water response to autumn rainfall in different land uses at multi-day timescale in a subtropical zone[J]. CATENA,2019,180:355-364.
APA	Sun, Long,Yang, Lei,Chen, Liding,Li, Shoujuan,Zhao, Fangkai,&Sun, Shiqiang.(2019).Tracing the soil water response to autumn rainfall in different land uses at multi-day timescale in a subtropical zone.CATENA,180,355-364.
MLA	Sun, Long,et al."Tracing the soil water response to autumn rainfall in different land uses at multi-day timescale in a subtropical zone".CATENA 180(2019):355-364.