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Soil erosion and human activities over the last 60 years revealed by magnetism, particle size and minerals of check dams sediments on the Chinese Loess Plateau

文献类型：期刊论文

作者Dong, Hongmei4; Song, Yougui2,3; Chen, Liumei1,3; Liu, Huifang3; Fu, Xiaofen3; Xie, Mengping3
刊名ENVIRONMENTAL EARTH SCIENCES
出版日期2022-03-01
卷号81期号:5页码:15
关键词Small watershed AMS C-14 and Cs-137 dating Precipitation Runoff Check dams Hydrological change
ISSN号1866-6280
DOI10.1007/s12665-022-10245-8
通讯作者Song, Yougui(syg@ieecas.cn)
英文摘要Soil erosion has become more serious in semiarid areas around the world. However, the discrimination of the impact of concurrent climate change and human activity on soil erosion in a particular study area remains a challenge. Check dams are important engineering measures to prevent soil erosion on the Chinese Loess Plateau, and the dam sediments, as the product of soil erosion, are related to both climate change and human activities in a small watershed. The present study selected a check dams sediment profile in the upper Jinghe Basin on the Chinese Loess Plateau as a case study. Based on AMS C-14 dating and Cs-137 measurement, we established the soil erosion timescale and employed multiple methods including magnetic susceptibility, particle size, and minerals to trace the soil erosion history. We compared them with a local hydrometeorological record in the Jinghe Basin to explore the relationship between soil erosion and human activities. AMS C-14 and Cs-137 results indicated that the profile was deposited since 1953. The results of magnetic susceptibility, particle size, and minerals revealed 3 soil erosion phases during the last 60 years. Soil erosion in this region is not only related to precipitation changes, but also closely related to human activities. Prior to the Reform and Opening-up in China in 1978, climatic change played a leading role in check dams sedimentation and hydrological changes. Subsequently, despite accelerated soil erosion associated with the family contract responsibility system, the check dams, afforestation and a warmer climate mitigated the soil erosion to some extent, runoff and sediment load continued to decrease. Since 1999, China's Grain for Green project has greatly reduced the runoff and sediment load. However, the policy of filling gullies and creating land since 2010 should be reconsidered carefully in terms of all aspects, including the eco-environment, hydrological cycle, and economics.
WOS关键词WUDING RIVER-BASIN ; CLIMATE-CHANGE ; VEGETATION COVER ; YELLOW-RIVER ; CATCHMENT ; FARMLAND ; IMPACTS ; RUNOFF ; SUSCEPTIBILITY ; STREAMFLOW
资助项目Strategic Priority Research Program of Chinese Academy of Sciences[XDB26000000] ; Key Research Program of the Chinese Academy of Science[KZZD-EW-04-02] ; Science and technology project of Guizhou Province[Qian Ke He [2017]1209] ; China Geological Survey[DD20190294] ; China Geological Survey[DD20189270]
WOS研究方向Environmental Sciences & Ecology ; Geology ; Water Resources
语种英语
WOS记录号WOS:000762323700001
出版者SPRINGER
资助机构Strategic Priority Research Program of Chinese Academy of Sciences ; Key Research Program of the Chinese Academy of Science ; Science and technology project of Guizhou Province ; China Geological Survey
源URL[http://ir.ieecas.cn/handle/361006/17526]  
专题地球环境研究所_古环境研究室
第四纪科学与全球变化卓越创新中心
通讯作者Song, Yougui
作者单位1.Zunyi Normal Univ, Coll Resources & Environm, Zunyi 563006, Guizhou, Peoples R China
2.CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China
3.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710061, Peoples R China
4.Xian Univ Sci & Technol, Sch Management, Xian 710054, Peoples R China
推荐引用方式
GB/T 7714		 Dong, Hongmei,Song, Yougui,Chen, Liumei,et al. Soil erosion and human activities over the last 60 years revealed by magnetism, particle size and minerals of check dams sediments on the Chinese Loess Plateau[J]. ENVIRONMENTAL EARTH SCIENCES,2022,81(5):15.
APA Dong, Hongmei,Song, Yougui,Chen, Liumei,Liu, Huifang,Fu, Xiaofen,&Xie, Mengping.(2022).Soil erosion and human activities over the last 60 years revealed by magnetism, particle size and minerals of check dams sediments on the Chinese Loess Plateau.ENVIRONMENTAL EARTH SCIENCES,81(5),15.
MLA Dong, Hongmei,et al."Soil erosion and human activities over the last 60 years revealed by magnetism, particle size and minerals of check dams sediments on the Chinese Loess Plateau".ENVIRONMENTAL EARTH SCIENCES 81.5(2022):15.

入库方式： OAI收割

来源：地球环境研究所

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