气候变化领域集成服务门户(CCPortal): Rainfall Determines Shallow Soil Seepage in a Piedmont Summer Pasture of Alpine Meadow on the Northeastern Qinghai-Tibetan Plateau

CCPortal

DOI	10.3390/w13202815
	Rainfall Determines Shallow Soil Seepage in a Piedmont Summer Pasture of Alpine Meadow on the Northeastern Qinghai-Tibetan Plateau
	Li, Hongqin; Yang, Yongsheng; Zhang, Fawei; Guo, Xiaowei; Li, Yikang; Lin, Li; Li, Yingnian; Cao, Guangmin; Zhou, Huakun
通讯作者	Zhang, FW (通讯作者)，Chinese Acad Sci, Inst Sanjiangyuan Natl Pk, Xining 810001, Peoples R China. ; Zhang, FW (通讯作者)，Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Adaptat & Evolut Plateau Biota, Xining 810001, Peoples R China. ; Zhang, FW (通讯作者)，Chinese Acad Sci, Northwest Inst Plateau Biol, Qinghai Prov Key Lab Restorat Ecol Cold Reg, Xining 810001, Peoples R China.
发表日期	2021
EISSN	2073-4441
卷号	13 期号:20
英文摘要	Soil seepage is an important component used for quantifying hydrological processes that remains unclear in high-altitude alpine meadows. Shallow soil seepage was continuously measured using an auto-logged micro-lysimeter (diameter = 30 cm, depth = 30 cm) from July 2018 to June 2019 in a piedmont summer pasture of alpine meadow on the Northeastern Qinghai-Tibetan Plateau. The results showed that all the shallow soil seepage events occurred during the non-frozen period from April to September and that the cumulative amount was 106.8 mm, representing about 1/5 of the annual precipitation. The maximum and minimum monthly soil seepage were 30.7 mm in September and 1.0 mm in April, respectively. The boosted regression trees (BRT) model's area under the curve averaged 0.92 and revealed that the daily half-hour rainfall frequency, volumetric soil water content, and air temperature played significant roles in the daily soil seepage probability, with the cumulative relative contribution of 68%. The stepwise linear regression analysis showed that the rainfall amount accounted for 59% of the variation in the daily amount of soil seepage. The monthly soil seepage was found to be significantly correlated with the monthly rainfall frequency (r = 0.86, p = 0.005). Our results highlighted that rainfall, including its amount and frequency, was the key determinant of the probability and amount of shallow soil seepage in the piedmont summer pasture of alpine meadows. These findings will be helpful for improving predictions of the water budgets of piedmont alpine meadows.
关键词	VEGETATION REGION RUNOFF FROST LAYER
英文关键词	micro-lysimeter; soil seepage probability; soil seepage amount; boosted regression trees; piedmont summer pasture
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
WOS类目	Environmental Sciences ; Water Resources
WOS记录号	WOS:000716974200001
来源期刊	WATER
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/253862
作者单位	[Li, Hongqin] Luoyang Normal Univ, Coll Life Sci, Luoyang 471934, Peoples R China; [Yang, Yongsheng; Zhang, Fawei; Li, Yingnian; Zhou, Huakun] Chinese Acad Sci, Inst Sanjiangyuan Natl Pk, Xining 810001, Peoples R China; [Yang, Yongsheng; Zhang, Fawei; Guo, Xiaowei; Li, Yikang; Lin, Li; Li, Yingnian; Cao, Guangmin; Zhou, Huakun] Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Adaptat & Evolut Plateau Biota, Xining 810001, Peoples R China; [Zhang, Fawei; Zhou, Huakun] Chinese Acad Sci, Northwest Inst Plateau Biol, Qinghai Prov Key Lab Restorat Ecol Cold Reg, Xining 810001, Peoples R China
推荐引用方式 GB/T 7714	Li, Hongqin,Yang, Yongsheng,Zhang, Fawei,et al. Rainfall Determines Shallow Soil Seepage in a Piedmont Summer Pasture of Alpine Meadow on the Northeastern Qinghai-Tibetan Plateau[J]. 中国科学院西北生态环境资源研究院,2021,13(20).
APA	Li, Hongqin.,Yang, Yongsheng.,Zhang, Fawei.,Guo, Xiaowei.,Li, Yikang.,...&Zhou, Huakun.(2021).Rainfall Determines Shallow Soil Seepage in a Piedmont Summer Pasture of Alpine Meadow on the Northeastern Qinghai-Tibetan Plateau.WATER,13(20).
MLA	Li, Hongqin,et al."Rainfall Determines Shallow Soil Seepage in a Piedmont Summer Pasture of Alpine Meadow on the Northeastern Qinghai-Tibetan Plateau".WATER 13.20(2021).