DOI: 10.5194/hess-20-3309-2016
Scopus记录号: 2-s2.0-84982113246
论文题名: Variations of deep soil moisture under different vegetation types and influencing factors in a watershed of the Loess Plateau, China
作者: Fang X ; , Zhao W ; , Wang L ; , Feng Q ; , Ding J ; , Liu Y ; , Zhang X
刊名: Hydrology and Earth System Sciences
ISSN: 10275606
出版年: 2016
卷: 20, 期: 8 起始页码: 3309
结束页码: 3323
语种: 英语
Scopus关键词: Driers (materials)
; Farms
; Landforms
; Moisture
; Rain
; Restoration
; Sediments
; Soil moisture
; Soil surveys
; Soils
; Water resources
; Watersheds
; Agricultural management
; Deep soil moisture
; Loess plateau of chinas
; Management measures
; Transition layers
; Vegetation restoration
; Vertical direction
; Water holding capacity
; Vegetation
; agricultural management
; bulk density
; deciduous tree
; desiccation
; dicotyledon
; environmental restoration
; rainfall
; soil horizon
; soil moisture
; sustainability
; vegetation type
; watershed
; Ansai
; China
; Loess Plateau
; Shaanxi
; Yanan
; Caragana
; Malus x domestica
英文摘要: Soil moisture in deep soil layers is a relatively stable water resource for vegetation growth in the semi-arid Loess Plateau of China. Characterizing the variations in deep soil moisture and its influencing factors at a moderate watershed scale is important to ensure the sustainability of vegetation restoration efforts. In this study, we focus on analyzing the variations and factors that influence the deep soil moisture (DSM) in 80-500cm soil layers based on a soil moisture survey of the Ansai watershed in Yan'an in Shanxi Province. Our results can be divided into four main findings. (1) At the watershed scale, higher variations in the DSM occurred at 120-140 and 480-500cm in the vertical direction. At the comparable depths, the variation in the DSM under native vegetation was much lower than that in human-managed vegetation and introduced vegetation. (2) The DSM in native vegetation and human-managed vegetation was significantly higher than that in introduced vegetation, and different degrees of soil desiccation occurred under all the introduced vegetation types. Caragana korshinsk and black locust caused the most serious desiccation. (3) Taking the DSM conditions of native vegetation as a reference, the DSM in this watershed could be divided into three layers: (i) a rainfall transpiration layer (80-220cm); (ii) a transition layer (220-400cm); and (iii) a stable layer (400-500cm). (4) The factors influencing DSM at the watershed scale varied with vegetation types. The main local controls of the DSM variations were the soil particle composition and mean annual rainfall; human agricultural management measures can alter the soil bulk density, which contributes to higher DSM in farmland and apple orchards. The plant growth conditions, planting density, and litter water holding capacity of introduced vegetation showed significant relationships with the DSM. The results of this study are of practical significance for vegetation restoration strategies, especially for the choice of vegetation types, planting zones, and proper human management measures. © 2016 Author(s). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/78760
Appears in Collections: 气候变化事实与影响
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作者单位: State Key Laboratory of Earth Surface Processes and Resource Ecology, College of Resource and Technology, Beijing Normal University, Beijing, China; Department of Earth Sciences, Indiana University, Purdue University Indianapolis (IUPUI), Indianapolis, IN, United States; College of Forestry, Shanxi Agricultural University, Taigu, Shanxi, China
Recommended Citation:
Fang X,, Zhao W,, Wang L,et al. Variations of deep soil moisture under different vegetation types and influencing factors in a watershed of the Loess Plateau, China[J]. Hydrology and Earth System Sciences,2016-01-01,20(8)