干旱区生态环境知识资源中心(Arid): Assessing temporal trends of soil erosion and sediment redistribution in the Hexi Corridor region using the integrated RUSLE-TLSD model

Arid

DOI	10.1016/j.catena.2020.104756
	Assessing temporal trends of soil erosion and sediment redistribution in the Hexi Corridor region using the integrated RUSLE-TLSD model
	Lin, Jinkuo; Guan, Qingyu; Tian, Jing; Wang, Qingzheng; Tan, Zhe; Li, Zijun; Wang, Ning
通讯作者	Guan, QY
来源期刊	CATENA
ISSN	0341-8162
EISSN	1872-6887
出版年	2020
卷号	195
英文摘要	Accurately evaluating soil water-erosion dynamics and drivers is crucial for mitigating soil and water loss. To simulate the potential or net soil erosion process in China's Hexi region (a 2.3 x 10(5) km(2) area including three river basins), this study attempted to integrate the transport limited sediment delivery (TLSD) function within the revised universal soil loss equation (RUSLE) model (the spatial resolution of the maps was 90 x 90 m). A geographically weighted regression model was used to evaluate the contribution of influencing factors to the net water-erosion rate and the soil and water conservation benefits of the Grain to Green Program (GTGP) (The area proportion of land types in 2015: 6.84% (cultivated land), 3.48% (forest land), 21.68% (grassland), 66.69% (unused land), 0.75% (water), and 0.56% (construction land). The results revealed that the RUSLE-TLSD model could reliably simulate the soil erosion process in Hexi (the Nash-Sutcliffe model efficiency coefficient exceeded 0.602). The potential water erosion rate was between 6.24 and 31.01 t/ha/a from 1982 to 2015, and the net water erosion rate declined slightly, with a slope of -0.0029. Water erosion was severe in high-altitude areas (altitude > 3306 m) with slopes of more than 21 degrees and annual precipitation above 235 mm and weak in low-altitude areas (altitude< 1920 m) with slopes less than 4 degrees and annual precipitation below 114 mm. Nearly 10% of the Qilian Mountain National Nature Reserve (QMNNR) areas experienced intensive erosion, and nearly 29% of the QMNNR areas experienced sediment deposition. Slope was the primary factor affecting soil erosion. Extreme precipitation directly aggravated the water-erosion risk, and this factor should be given increased attention particularly in arid and semi-arid regions. The GTGP effectively reduced water soil erosion caused by extreme precipitation and improved water retention and soil consolidation in Hexi.
英文关键词	Hexi region Grain to Green Geographically weighted regression Soil erosion Water erosion
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000580366300018
WOS关键词	LOESS PLATEAU ; LAND-USE ; WATER EROSION ; RAINFALL EROSIVITY ; RIVER-BASIN ; SURFACE RUNOFF ; SLOPE GRADIENT ; GREEN PROGRAM ; CHINA ; GRAIN
WOS类目	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS研究方向	Geology ; Agriculture ; Water Resources
来源机构	兰州大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/326960
作者单位	[Lin, Jinkuo; Guan, Qingyu; Tian, Jing; Wang, Qingzheng; Tan, Zhe; Wang, Ning] Lanzhou Univ, Coll Earth & Environm Sci, Gansu Key Lab Environm Pollut Predict & Control, Lanzhou 730000, Peoples R China; [Li, Zijun] Shandong Normal Univ, Coll Geog & Environm, Jinan 250000, Shandong, Peoples R China
推荐引用方式 GB/T 7714	Lin, Jinkuo,Guan, Qingyu,Tian, Jing,et al. Assessing temporal trends of soil erosion and sediment redistribution in the Hexi Corridor region using the integrated RUSLE-TLSD model[J]. 兰州大学,2020,195.
APA	Lin, Jinkuo.,Guan, Qingyu.,Tian, Jing.,Wang, Qingzheng.,Tan, Zhe.,...&Wang, Ning.(2020).Assessing temporal trends of soil erosion and sediment redistribution in the Hexi Corridor region using the integrated RUSLE-TLSD model.CATENA,195.
MLA	Lin, Jinkuo,et al."Assessing temporal trends of soil erosion and sediment redistribution in the Hexi Corridor region using the integrated RUSLE-TLSD model".CATENA 195(2020).