干旱区生态环境知识资源中心(Arid): Assessment of Soil Erosion from an Ungauged Small Watershed and Its Effect on Lake Ulansuhai, China

Arid

DOI	10.3390/land12020440
	Assessment of Soil Erosion from an Ungauged Small Watershed and Its Effect on Lake Ulansuhai, China
	Zhang, Zhuangzhuang; Yu, Ruihong
通讯作者	Yu, RH
来源期刊	LAND
EISSN	2073-445X
出版年	2023
卷号	12 期号:2
英文摘要	Lake Ulansuhai, one of the main water sources for semi-arid areas of China, has a local deposit caused by soil erosion during past decades. However, a lack of monitor stations prevents better estimation of soil erosion levels. Therefore, we try to estimate soil erosion in the Huangtuyaozi (HTYZ) watershed, an ungauged small watershed of the lake's eastern watershed, by using the revised universal soil loss equation (RUSLE) model and multi-source remote sensing data, and analyze its key drivers and effect on the lake siltation. The result showed that the soil erosion rate in the HTYZ watershed ranged from 0 to 129.893 t ha(-1) yr(-1) with an average of 6.45 t ha(-1) yr(-1) during 1986-2015. In particular, 80.06% of the area was less than 10 t ha(-1) yr(-1), and just 0.06% was over 50 t ha(-1) yr(-1), mainly in the mountain area, the southern part of the HTYZ watershed. Moreover, rainfall erosivity factor is the key factor, and rainfall during flood season plays a key role in soil erosion. Due to the soil erosion of HTYZ, siltation in Lake Ulansuhai reached 223.83 ha, with the annual siltation area increasing at a rate of 7.46 ha/yr. The results could provide a reference for estimating soil erosion of ungauged small watershed in semi-arid areas.
英文关键词	soil erosion RUSLE ungauged small watershed Lake Ulansuhai semi-arid areas
类型	Article
语种	英语
开放获取类型	gold
收录类别	SSCI
WOS记录号	WOS:000941002400001
WOS关键词	DRIVING FACTORS ; YELLOW-RIVER ; RUSLE MODEL ; PREDICTION ; SEDIMENT ; GIS ; FLOOD ; RISK
WOS类目	Environmental Studies
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/397628
推荐引用方式 GB/T 7714	Zhang, Zhuangzhuang,Yu, Ruihong. Assessment of Soil Erosion from an Ungauged Small Watershed and Its Effect on Lake Ulansuhai, China[J],2023,12(2).
APA	Zhang, Zhuangzhuang,&Yu, Ruihong.(2023).Assessment of Soil Erosion from an Ungauged Small Watershed and Its Effect on Lake Ulansuhai, China.LAND,12(2).
MLA	Zhang, Zhuangzhuang,et al."Assessment of Soil Erosion from an Ungauged Small Watershed and Its Effect on Lake Ulansuhai, China".LAND 12.2(2023).