干旱区生态环境知识资源中心(Arid): Multi-scale analysis of runoff from a statistical perspective in a small Sahelian catchment under semi-arid climate

Arid

DOI	10.1007/s12517-020-5141-2
	Multi-scale analysis of runoff from a statistical perspective in a small Sahelian catchment under semi-arid climate
	Mounirou, Lawani Adjadi 1; Zoure, Cheick Oumar 1; Yonaba, Roland 1; Paturel, Jean-Emmanuel 2; Mahe, Gil 2; Niang, Dial 1; Yacouba, Hamma 1; Karambiri, Harouna 1
通讯作者	Mounirou, Lawani Adjadi
来源期刊	ARABIAN JOURNAL OF GEOSCIENCES
ISSN	1866-7511
EISSN	1866-7538
出版年	2020
卷号	13 期号:4
英文摘要	In Sahelian and semi-arid regions, understanding the runoff processes and at different spatial scales is critical to assess sources of variation and further improve distributed modelling. In this study, through a multi-scale analysis, runoff measurements on different soil surface features and at different scales of observation were carried over 6 years of monitoring in a typical Sahelian landscape in Burkina Faso. Statistical and dimensional analyses were used to investigate significant differences in runoff response behaviour on plots of 1 m(2), 50 m(2) and 150 m(2), hydrologic units of 6 and 34 ha and the catchment of 37 km(2). Results showed that on both cultivated and bare soils, the runoff excess decreases as the area increases, under similar rainfall pattern and prior antecedent soil moisture conditions. On degraded soils, the processes of runoff generation on the plots of 50 and 150 m(2) are identical and significantly different from those observed on the unit plot (1 m(2)). A minimum plot length of 10 m was found to be sufficient to accurately estimate runoff on degraded soils. On cultivated soils, runoff is significantly different from one site to another because of the spatial variability of hydrodynamic properties of the soil. Such results show that the scale effect on runoff is related to the spatial heterogeneity of soils and is further intensified by the rainfall intensity. Such results highlight the value of quantification of runoff on homogeneous units, hence allowing an innovative approach to the problem of scale transfer.
英文关键词	Rainfall intensity Runoff potential Sahel Soil spatial heterogeneity Surface feature
类型	Article
语种	英语
国家	Burkina Faso ; France
收录类别	SCI-E
WOS记录号	WOS:000513931400006
WOS关键词	ORGANIC-CARBON LOSSES ; SOIL-EROSION ; HYDROLOGICAL RESPONSE ; SPATIAL VARIABILITY ; RAINFALL INTENSITY ; SURFACE RUNOFF ; PLOT-SCALE ; WATER ; GENERATION ; IMPACT
WOS类目	Geosciences, Multidisciplinary
WOS研究方向	Geology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/314076
作者单位	1.Inst Int Ingn Eau & Environm 2iE, Lab Eaux HydroSyst & Agr LEHSA, Rue Sci,01 01-BP-594, Ouagadougou, Burkina Faso; 2.Univ Montpellier, UMR 5569 HydroSci Montpellier CC 57, 163 Rue Auguste Broussonnet, F-34090 Montpellier, France
推荐引用方式 GB/T 7714	Mounirou, Lawani Adjadi,Zoure, Cheick Oumar,Yonaba, Roland,et al. Multi-scale analysis of runoff from a statistical perspective in a small Sahelian catchment under semi-arid climate[J],2020,13(4).
APA	Mounirou, Lawani Adjadi.,Zoure, Cheick Oumar.,Yonaba, Roland.,Paturel, Jean-Emmanuel.,Mahe, Gil.,...&Karambiri, Harouna.(2020).Multi-scale analysis of runoff from a statistical perspective in a small Sahelian catchment under semi-arid climate.ARABIAN JOURNAL OF GEOSCIENCES,13(4).
MLA	Mounirou, Lawani Adjadi,et al."Multi-scale analysis of runoff from a statistical perspective in a small Sahelian catchment under semi-arid climate".ARABIAN JOURNAL OF GEOSCIENCES 13.4(2020).