气候变化领域集成服务门户(CCPortal): Spatial heterogeneity of throughfall and its contributions to the variability in near-surface soil water-content in semiarid mountains of China

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DOI	10.1016/j.foreco.2021.119008
	Spatial heterogeneity of throughfall and its contributions to the variability in near-surface soil water-content in semiarid mountains of China
	Zhu, Xi; He, Zhibin; Du, Jun; Chen, Longfei; Lin, Pengfei; Tian, Quanyan
通讯作者	He, ZB (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Ecohydrol Inland River Basin, Linze Inland River Basin Res Stn,Chinese Ecosyst, Lanzhou 730000, Peoples R China.
发表日期	2021
ISSN	0378-1127
EISSN	1872-7042
卷号	488
英文摘要	Throughfall (TF) is one of the most important factors affecting forest surface soil moisture. However, TF heterogeneity and its contributions to the variability in near-surface soil water-content (SWC) in a spruce forest in semiarid mountain ecosystems are poorly understood, and may determine plant survival. Here, we systematically investigated variability of TF in a Picea crassifolia stand within a protected semi-arid mountain ecosystem, and evaluated the contributions of TF to near-surface SWC variability obtained from TF gauges and SWC measurements at the plot level. Results showed that TF variability tended to decline with an increase in rainfall amount, intensity, and duration, and then tended to be stable after a value of 24.1 mm, 3.1 mm h(-1) and 789.8 min, respectively. Both TF and surface SWC were highly spatially variable, but the spatial patterns appeared to be stable over time based on time-stability analysis. The mean SWC increment exhibited a strong positive power relationship with plot mean TF, and the percent of locations with SWC increments increased similarly to TF amount for individual rainfall events. TF, soil bulk density, and litter fall biomass can significantly (P < 0.05) affect the stability of SWC increments. Therefore, our research indicated that further research should consider the relative importance of, and interactions among precipitation characteristics, soil heterogeneity, and vegetation characteristics. Our results may be useful for land managers involved in enhancing the water conservation capacity of semi-arid mountain forest ecosystems, where climatic conditions, soil quality and vegetation characteristics will determine the supply of multiple forest ecosystem functions.
关键词	SPRUCE PICEA-CRASSIFOLIA TEMPORAL STABILITY RAINFALL INTERCEPTION CANOPY INTERCEPTION XEROPHYTIC SHRUB HILLSLOPE SCALE FOREST MOISTURE STORAGE STEMFLOW
英文关键词	Throughfall; Spatial variability; Surface soil moisture; Temporal stability; Picea crassifolia; Qilian Mountains
语种	英语
WOS研究方向	Forestry
WOS类目	Forestry
WOS记录号	WOS:000629260100001
来源期刊	FOREST ECOLOGY AND MANAGEMENT
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254332
作者单位	[Zhu, Xi; He, Zhibin; Du, Jun; Chen, Longfei; Lin, Pengfei; Tian, Quanyan] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Ecohydrol Inland River Basin, Linze Inland River Basin Res Stn,Chinese Ecosyst, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Zhu, Xi,He, Zhibin,Du, Jun,et al. Spatial heterogeneity of throughfall and its contributions to the variability in near-surface soil water-content in semiarid mountains of China[J]. 中国科学院西北生态环境资源研究院,2021,488.
APA	Zhu, Xi,He, Zhibin,Du, Jun,Chen, Longfei,Lin, Pengfei,&Tian, Quanyan.(2021).Spatial heterogeneity of throughfall and its contributions to the variability in near-surface soil water-content in semiarid mountains of China.FOREST ECOLOGY AND MANAGEMENT,488.
MLA	Zhu, Xi,et al."Spatial heterogeneity of throughfall and its contributions to the variability in near-surface soil water-content in semiarid mountains of China".FOREST ECOLOGY AND MANAGEMENT 488(2021).