干旱区生态环境知识资源中心(Arid): WEPP MODEL FOR RILL EROSION ESTIMATION IN A BRAZILIAN SEMIARID WATERSHED

Arid

DOI	10.1590/1983-21252020v33n327rc
	WEPP MODEL FOR RILL EROSION ESTIMATION IN A BRAZILIAN SEMIARID WATERSHED
	Piscoya, Victor Casimiro; De Souza, Waldemir Pereira; Barros Cantalice, Jose Ramon; Cunha Filho, Moacyr; Pereira De Melo, Robson Carlos; De Araujo Filho, Renisson Neponuceno
通讯作者	Piscoya, VC
来源期刊	REVISTA CAATINGA
ISSN	0100-316X
EISSN	1983-2125
出版年	2020
卷号	33 期号:3 页码:835-843
英文摘要	Soil erosion is a major environmental problem in many parts of the world and represents a serious problem for sustainable agriculture and the environment, with direct and indirect impacts on soil quality and fertility. This study aimed to use the Water Erosion Prediction Project (WEPP) model to estimate rill erosion and determine soil physical and hydraulic properties, which are essential to investigate its performance. To this end, an experiment was carried out in the Exu Creek watershed, in Serra Talhada, semi-arid region of Pernambuco State (Brazil), under increasing flow rates: T1: 5.87 L min-1; T2: 12.10 L min-1; T3: 20.33 L min-1; and T4: 27.57 L min-1. Liquid and solid discharges were sampled for determination and characterization of hydraulic parameters in preformed rill flows. Reynolds numbers between 2,019 and 6,929 and Fronde numbers below 1 found in this study attest to occurrence of erosive rills. Soil losses due to rill erosion increased as flow rates increased. Rill erodibility was 0.0011 kg N-1 s-1, and critical shear stress (tau c) was 1.91 Pa, collapsing rill sidewalls and increasing local uplift, wet perimeter, and rill hydraulic radius.
英文关键词	Hydraulic relations Flow rates Erodibility Shear stress
类型	Article
语种	英语
开放获取类型	DOAJ Gold
收录类别	SCI-E
WOS记录号	WOS:000555959900027
WOS关键词	RESISTANCE ; REGION
WOS类目	Agronomy
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/325432
作者单位	[Piscoya, Victor Casimiro; De Souza, Waldemir Pereira; Pereira De Melo, Robson Carlos] Univ Fed Rural Pernambuco, Dept Rural Technol, Recife, PE, Brazil; [Barros Cantalice, Jose Ramon] Univ Fed Rural Pernambuco, Dept Agron, Recife, PE, Brazil; [Cunha Filho, Moacyr] Univ Fed Rural Pernambuco, Dept Stat & Informat, Recife, PE, Brazil; [De Araujo Filho, Renisson Neponuceno] Univ Fed Tocantins, Dept Forestry Engn, Gurupi, TO, Brazil
推荐引用方式 GB/T 7714	Piscoya, Victor Casimiro,De Souza, Waldemir Pereira,Barros Cantalice, Jose Ramon,et al. WEPP MODEL FOR RILL EROSION ESTIMATION IN A BRAZILIAN SEMIARID WATERSHED[J],2020,33(3):835-843.
APA	Piscoya, Victor Casimiro,De Souza, Waldemir Pereira,Barros Cantalice, Jose Ramon,Cunha Filho, Moacyr,Pereira De Melo, Robson Carlos,&De Araujo Filho, Renisson Neponuceno.(2020).WEPP MODEL FOR RILL EROSION ESTIMATION IN A BRAZILIAN SEMIARID WATERSHED.REVISTA CAATINGA,33(3),835-843.
MLA	Piscoya, Victor Casimiro,et al."WEPP MODEL FOR RILL EROSION ESTIMATION IN A BRAZILIAN SEMIARID WATERSHED".REVISTA CAATINGA 33.3(2020):835-843.