气候变化领域集成服务门户(CCPortal): Effects of different soil and water conservation measures on hydrological extremes and flood processes in the Yanhe River, Loess Plateau, China

CCPortal

DOI	10.1007/s11069-021-04848-w
	Effects of different soil and water conservation measures on hydrological extremes and flood processes in the Yanhe River, Loess Plateau, China
	Gu C.J.; Zhu Y.; Li R.; Yao H.; Mu X.
发表日期	2021
ISSN	0921030X
英文摘要	The runoff and sediment load of the Loess Plateau have changed significantly due to the implementation of soil and water conservation measures since the 1970s. However, the effects of soil and water conservation measures on hydrological extremes have rarely been considered. In this study, we investigated the variations in hydrological extremes and flood processes during different periods in the Yanhe River Basin (a tributary of the Loess Plateau) based on the daily mean runoff and 117 flood event data from 1956 to 2013. The study periods were divided into reference period (1956–1969), engineering measures period (1970–1995), and biological control measures period (1996–2013) according to the change points of the annual streamflow and the actual human activity in the basin. The results of the hydrological high extremes (HF1max, HF3max, HF7max) exhibit a decreasing trend (P < 0.01), whereas the hydrological low extremes (HBF1min, HBF3min, HBF7min) show an increasing trend during 1956–2013. Compared with the hydrological extremes during the reference period, the hydrological high extremes increased during the engineering measures period at low (< 15%) and high frequency (> 80%), whereas decreased during the biological control measures period at almost all frequencies. The hydrological low extremes generally increased during both the engineering measures and biological control measures periods, particularly during the latter period. At the flood event scale, most flood event indices in connection with the runoff and sediment during the engineering measures period were significantly higher than those during the biological control measures period. The above results indicate that the ability to withstand hydrological extremes for the biological control measures was greater than that for the engineering measures in the studied basin. This work reveals the effects of different soil and water conservation measures on hydrological extremes in a typical basin of the Loess Plateau and hence can provide a useful reference for regional soil erosion control and disaster prevention policy-making. © 2021, The Author(s), under exclusive licence to Springer Nature B.V.
关键词	Flood events Hydrological extremes Soil and water conservation Yanhe River Basin
语种	英语
来源期刊	Natural Hazards
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/206251
作者单位	Yangtze River Basin Monitoring Center Station for Soil and Water Conservation, Changjiang Water Resources Commission, Wuhan, Hubei Province 430012, China; State Key Laboratory of Soil Erosion and Dryland Farming On the Loess Plateau, Northwest A&F University, Xinong Road 26, Yangling, Shaanxi Province 712100, China; Institute of Soil and Water Conservation of Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi Province 712100, China
推荐引用方式 GB/T 7714	Gu C.J.,Zhu Y.,Li R.,et al. Effects of different soil and water conservation measures on hydrological extremes and flood processes in the Yanhe River, Loess Plateau, China[J],2021.
APA	Gu C.J.,Zhu Y.,Li R.,Yao H.,&Mu X..(2021).Effects of different soil and water conservation measures on hydrological extremes and flood processes in the Yanhe River, Loess Plateau, China.Natural Hazards.
MLA	Gu C.J.,et al."Effects of different soil and water conservation measures on hydrological extremes and flood processes in the Yanhe River, Loess Plateau, China".Natural Hazards (2021).