气候变化领域集成服务门户(CCPortal): Assessment of wind and water erosion risk in the watershed of the Ningxia-Inner Mongolia Reach of the Yellow River, China

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DOI	10.1016/j.ecolind.2016.02.042
	Assessment of wind and water erosion risk in the watershed of the Ningxia-Inner Mongolia Reach of the Yellow River, China
	Du, Heqiang; Dou, Shentang; Deng, Xiaohong; Xue, Xian; Wang, Tao
发表日期	2016
ISSN	1470-160X
EISSN	1872-7034
卷号	67
英文摘要	The watershed of the Ningxia-Inner Mongolia Reach of the Yellow River (NIMRYR) suffers from soil erosion by wind and water because of the wide distribution of deserts and arsenic sandstones in this region. The sediment generated by erosion fed into the Yellow River directly or by its tributaries, silting up the Yellow River and raising the elevation of the river bed. The silting of the Yellow River result in serious flood disasters in this watershed. Therefore, it is urgent to implement soil conservation projects to control wind and water soil erosion. To reach this objective, understanding the spatial and temporal variations of soil erosion in this watershed is very important. In this study, an assessment of soil erosion risk by wind and water was performed based on soil erosion models. The Integrated Wind Erosion Modeling System (IWEMS) and the Revised Wind Erosion Equation (RWEQ) were used to estimate the wind erosion modulus in this watershed, and the water erosion modulus was estimated by the Revised Universal Soil Loss Equation (RUSLE). The results show that during 2000s, the wind erosion modulus ranged from 0 to 31,440.4 t/km(2)/a, and the water erosion modulus was from 0 to 24,048.5 t/km(2)/a. Moreover, the total soil erosion modulus by wind and water has ranged from 0 to 32,792.7 t/km(2)/a. Due to the influence of regional weather and geomorphology, occurrences of wind and water erosion in this watershed are not identical in their spatial and temporal patterns. Based on the calculated soil erosion modulus, soil erosion risk was assessed according to the "Classification criteria for soil-erosion intensities" (SL190-2007). It was assumed that the areas with erosion intensity higher than slight were at risk of erosion; by this criterion, more than 34% of the total area of the watershed of the NIMRYR would be at erosion risk. Based on this estimation, it was also found that the NIMRYR watershed is not a region of wind water erosion crisscross and that land-use conversions have a significant impact on soil erosion. (C) 2016 Elsevier Ltd. All rights reserved.
关键词	IWEMS NIMRYR RUSLE RWEQ Soil erosion
学科领域	Biodiversity & Conservation; Environmental Sciences & Ecology
语种	英语
WOS研究方向	Biodiversity Conservation ; Environmental Sciences
来源期刊	ECOLOGICAL INDICATORS
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/111866
作者单位	Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, West Donggang Rd 320, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Du, Heqiang,Dou, Shentang,Deng, Xiaohong,et al. Assessment of wind and water erosion risk in the watershed of the Ningxia-Inner Mongolia Reach of the Yellow River, China[J]. 中国科学院西北生态环境资源研究院,2016,67.
APA	Du, Heqiang,Dou, Shentang,Deng, Xiaohong,Xue, Xian,&Wang, Tao.(2016).Assessment of wind and water erosion risk in the watershed of the Ningxia-Inner Mongolia Reach of the Yellow River, China.ECOLOGICAL INDICATORS,67.
MLA	Du, Heqiang,et al."Assessment of wind and water erosion risk in the watershed of the Ningxia-Inner Mongolia Reach of the Yellow River, China".ECOLOGICAL INDICATORS 67(2016).