干旱区生态环境知识资源中心(Arid): Intrastorm stemflow variability of a xerophytic shrub within a water-limited arid desert ecosystem of northern China

Arid

	Intrastorm stemflow variability of a xerophytic shrub within a water-limited arid desert ecosystem of northern China
	Zhang Yafeng; Wang Xinping; Pan Yanxia; Hu Rui
来源期刊	Sciences in Cold and Arid Regions
ISSN	1674-3822
出版年	2017
卷号	9 期号:5 页码:495-502
英文摘要	An increasing number of studies in recent years has elucidated distinguishable effects of stemflow on hydrology and biogeochemistry within a variety of ecosystems. Nonetheless, no known studies have investigated the temporal variability of stemflow volume within discrete rainfall events for xerophytic shrubs. Here, stemflow was monitored at 5-min intervals using a tipping-bucket rain gage during the 2015 growing season for a xerophytic shrub (Caragana korshinskii) within a water-limited arid desert ecosystem of northern China. We characterized the stemflow temporal variability, along with rainfall, and found the temporal heterogeneity of rainfall clearly affected the timing of stemflow inputs into basal soil within discrete rainfall events. The rainfall threshold value for stemflow generation is not a constant value but a range (0.6~2.1 mm, with an average of 1.1 mm) across rainfall events and is closely associated with the antecedent dry period. Time lags existed between the onset of rainfall and the onset of stemflow, and between rainfall peaks and stemflow peaks. Our findings are expected to be helpful for an improved process-based understanding of the temporal stemflow yield of xerophytic shrubs within water-limited arid desert ecosystems.
英文关键词	stemflow temporal variability xerophytic shrub antecedent dry period time lag
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:6150050
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335892
作者单位	Zhang Yafeng, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Shapotou Desert Research and Experiment Station, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China.; Wang Xinping, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Shapotou Desert Research and Experiment Station, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China.; Pan Yanxia, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Shapotou Desert Research and Experiment Station, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China.; Hu Rui, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Shapotou Desert Research and Experiment Station, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China.
推荐引用方式 GB/T 7714	Zhang Yafeng,Wang Xinping,Pan Yanxia,et al. Intrastorm stemflow variability of a xerophytic shrub within a water-limited arid desert ecosystem of northern China[J],2017,9(5):495-502.
APA	Zhang Yafeng,Wang Xinping,Pan Yanxia,&Hu Rui.(2017).Intrastorm stemflow variability of a xerophytic shrub within a water-limited arid desert ecosystem of northern China.Sciences in Cold and Arid Regions,9(5),495-502.
MLA	Zhang Yafeng,et al."Intrastorm stemflow variability of a xerophytic shrub within a water-limited arid desert ecosystem of northern China".Sciences in Cold and Arid Regions 9.5(2017):495-502.