TY - JOUR
T1 - Use of 10 Be isotope to predict landscape development in the source area of the Yellow River (SAYR), northeastern Qinghai-Tibet Plateau
AU - Chen, Peng
AU - Yi, Peng
AU - Xiong, Ling
AU - Yu, Zhongbo
AU - Aldahan, Ala
AU - Muscheler, Raimund
AU - Jin, Huijun
AU - Luo, Dongliang
AU - Possnert, Göran
AU - Wu, Mousong
AU - Wan, Chengwei
AU - Zheng, Minjie
N1 - Funding Information:
This work was supported by the National Key R&D Program of China (Grant No. 2016YFC0402706 , 2016YFC0402710 ), National Natural Science Foundation of China (Grant No. 51539003 , 51709046 ), National Science Funds for Creative Research Groups of China (No. 51421006 ), the China Scholarship Council (CSC, 201706710122 ), the Fundamental Research Funds for the Central Universities (Grant No. 2017B681X14 ), the Postgraduate Research & Practice Innovation Program of Jiangsu Province (Grant No. KYCX17_0413 ) and the Special Fund of State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering (Grant No. 20145027312 , 20165042512 , 20155045612 ). A. Aldahan thanks the United Arab Emirates University for financial support through UPAR grants. Department of Earth Sciences at Uppsala University is also thanked for the 10 Be samples preparation.
Publisher Copyright:
© 2019
PY - 2019/7
Y1 - 2019/7
N2 - The magnitude of soil and sediment erosion and accumulation processes can profoundly affect landscape development and hamper efficient management of natural resources. Consequently, estimating the rates and causes of these processes is essential, particularly in remote regions, for prediction of changes in landform and river evolution and protection of local ecosystem. We here present the results of a soil and sediment erosion investigation in the Source Area of the Yellow River (SAYR), northeast Qinghai-Tibet Plateau based on a combined analysis of 10 Be cosmogenic isotope and Soil and Water Assessment Tool (SWAT) simulation modelling. The data reveal variable soil erosion trends that range between 103 and 830 t km −2 a −1 . The low values occur in the western part of the basin that are associated with low sediment yield, while the high values appear in the dominant sediment export part of the basin along the main stream of the Yellow River in the east. Generally, soil and sediment accumulation is characterized by high 10 Be concentration in the western part and the northwest of Ngöring Lake. The style of landform development by the erosion/accumulation processes is closely linked to the distribution and degradation extent of the permafrost in the study region. Soil surface erosion increases with more permafrost degradation from the western to the eastern part of the basin, and surface soil particles are dominantly removed from the surface rather than deeper layers.
AB - The magnitude of soil and sediment erosion and accumulation processes can profoundly affect landscape development and hamper efficient management of natural resources. Consequently, estimating the rates and causes of these processes is essential, particularly in remote regions, for prediction of changes in landform and river evolution and protection of local ecosystem. We here present the results of a soil and sediment erosion investigation in the Source Area of the Yellow River (SAYR), northeast Qinghai-Tibet Plateau based on a combined analysis of 10 Be cosmogenic isotope and Soil and Water Assessment Tool (SWAT) simulation modelling. The data reveal variable soil erosion trends that range between 103 and 830 t km −2 a −1 . The low values occur in the western part of the basin that are associated with low sediment yield, while the high values appear in the dominant sediment export part of the basin along the main stream of the Yellow River in the east. Generally, soil and sediment accumulation is characterized by high 10 Be concentration in the western part and the northwest of Ngöring Lake. The style of landform development by the erosion/accumulation processes is closely linked to the distribution and degradation extent of the permafrost in the study region. Soil surface erosion increases with more permafrost degradation from the western to the eastern part of the basin, and surface soil particles are dominantly removed from the surface rather than deeper layers.
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U2 - 10.1016/j.jenvrad.2019.03.018
DO - 10.1016/j.jenvrad.2019.03.018
M3 - Article
C2 - 30925264
AN - SCOPUS:85063325554
SN - 0265-931X
VL - 203
SP - 187
EP - 199
JO - Journal of Environmental Radioactivity
JF - Journal of Environmental Radioactivity
ER -