干旱区生态环境知识资源中心(Arid): Gully head modelling in Iranian Loess Plateau under different scenarios

Arid

DOI	10.1016/j.catena.2020.104769
	Gully head modelling in Iranian Loess Plateau under different scenarios
	Kariminejad, Narges; Rossi, Mauro; Hosseinalizadeh, Mohsen; Pourghasemi, Hamid Reza; Santosh, M.
通讯作者	Rossi, M
来源期刊	CATENA
ISSN	0341-8162
EISSN	1872-6887
出版年	2020
卷号	194
英文摘要	Gully head erosion is a significant process in semi-arid regions contributing to land degradation and hillslope dynamics. Predicting when and where gully heads will expand under different seasonal scenarios is an essential step to take the appropriate mitigation measures. The LANDPLANER model was applied in this study area in order to analyze and investigate specific issues related to the triggering of gully head processes. The model is mainly designed to describe the dynamic response of slopes (or basins) under changing scenarios, including meteorological factors, vegetation or land use, and slope morphology. This model enabled us to predict the occurrence of gully heads under different seasonal conditions defined by Curve Number and rainfall scenarios. The LANDPLANER erosion modeling schema is twofold and integrates two different approaches. The first is empirical and exploits an erosion topographic threshold equation, while the second is aimed to define an erosion index calculated starting from the results of the hydrological model. These two indices predict where erosion processes can occur. To analyze the impact of land use changes on slope response to rainfall events, we simulated seasonal land use changes scenarios, modifying the Curve Number values associated to each specific land use classes. The twofold strategy was also adopted to validate the model, namely testing the model with synthetic dataset, and applying the model to real cases. The results indicated that the density of gully heads is more frequent in the South facing slopes with low elevation (around 200-300 m), steeper slope (within 20-40 degrees), and higher average accumulation value ( > 100 m). Higher values of topographic threshold and erosion index (region 1: 13.1, region 2: 8.9) are obtained for the cold season in winter, where rainfall is intense and vegetation cover is lowest in the rangelands. Given to both observing receiver operating characteristic curve, the best and worst performances of gully head occurrence belong to the third Curve Number scenario (the lowest vegetation cover in terms of rangelands in winter) and the second Curve Number scenario (the lowest vegetation covers in terms of agricultural lands in summer) in turn. Further, the LANDPLANNER model effectively characterizes the status and trend of gully head formation in the study area.
英文关键词	LANDPLANER Gully head Rainfall Curve number
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000566699000074
WOS关键词	DATA-MINING TECHNIQUES ; EROSION SUSCEPTIBILITY ; THRESHOLD CONDITIONS ; TEMPERATE CLIMATE ; LAND-USE ; IMPACT ; PERFORMANCE ; AREAS ; RATES
WOS类目	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS研究方向	Geology ; Agriculture ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/326087
作者单位	[Kariminejad, Narges; Hosseinalizadeh, Mohsen] Gorgan Univ Agr Sci & Nat Resources, Dept Watershed & Arid Zone Management, Gorgan, Golestan, Iran; [Rossi, Mauro] Res Inst Geohydrol Protect, Natl Res Council, Perugia, Italy; [Pourghasemi, Hamid Reza] Shiraz Univ, Dept Nat Resources & Environm Engn, Coll Agr, Shiraz, Iran; [Santosh, M.] China Univ Geosci Beijing, Sch Earth Sci & Resources, Beijing 100083, Peoples R China; [Santosh, M.] Univ Adelaide, Dept Earth Sci, Adelaide, SA 5005, Australia
推荐引用方式 GB/T 7714	Kariminejad, Narges,Rossi, Mauro,Hosseinalizadeh, Mohsen,et al. Gully head modelling in Iranian Loess Plateau under different scenarios[J],2020,194.
APA	Kariminejad, Narges,Rossi, Mauro,Hosseinalizadeh, Mohsen,Pourghasemi, Hamid Reza,&Santosh, M..(2020).Gully head modelling in Iranian Loess Plateau under different scenarios.CATENA,194.
MLA	Kariminejad, Narges,et al."Gully head modelling in Iranian Loess Plateau under different scenarios".CATENA 194(2020).