文献类型：期刊文献

英文题名：Climate-vegetation-erosion interactions revealed by the sediments of Huguangyan Maar Lake, southern China

作者：Xue, Hongpan[1];Zhou, Xin[1];Tu, Luyao[2,3,4];Ma, Li[1];Jiang, Shiwei[1];Cui, Shukun[1];Xu, Liqiang[5];Chen, Yiyan[6];Liu, Xiaoyan[1];Qiu, Zihui[1];Zhang, Xiaolin[1];Kong, Deming[7];Zeng, Fangming[8];Huang, Chao[7]

机构：[1]Univ Sci & Technol China, Sch Earth & Space Sci, Hefei 230026, Peoples R China;[2]Nanjing Normal Univ, Sch Marine Sci & Engn, Nanjing 210046, Peoples R China;[3]Univ Bern, Oeschger Ctr Climate Change Res, CH-3012 Bern, Switzerland;[4]Univ Bern, Inst Geog, CH-3012 Bern, Switzerland;[5]Hefei Univ Technol, Sch Resources & Environm Engn, Hefei 230009, Peoples R China;[6]UCL, Dept Geog, 26 Bedford Way, London WC1H 0AP, England;[7]Guangdong Ocean Univ, Coll Ocean & Meteorol, Guangdong Prov Key Lab Coastal Ocean Variat & Disa, Zhanjiang 524088, Peoples R China;[8]Qinghai Prov Key Lab Geol & Environm Salt Lakes, Xining 810008, Peoples R China

年份：2023

卷号：231

外文期刊名：CATENA

收录：SCI-EXPANDED(收录号：WOS:001026303900001)、、Scopus(收录号：2-s2.0-85162091975)、WOS

基金：Special thanks are due to the editor and two anonymous reviewers for their suggestions which have greatly improved the manuscript. We thank Zhanjiang Huguangyan Scenic Area Administration for their help during the sediment coring campaign. This study was jointly supported by the National Natural Science Foundation of China (41888101, 41721002) , the National Key Research and Development Program of China (2022YFF0801101) , the Strategic Priority Research Program of the Chinese Academy of Sciences (grant XDB26000000) , the CAS Youth Interdisciplinary Team (grant JCTD-2021-05) , and the Youth Innovation Promotion Association, CAS (2018498) . We thanks Dr. Jan Bloemendal for English language improvements.

语种：英文

外文关键词：Soil erosion; Precipitation; Vegetation cover; Huguangyan Maar Lake; Human activity

外文摘要：Soil erosion is a serious environmental problem in the red soil region of southern China, yet little is known about the factors responsible and their specific effects on long-term soil erosion dynamics in this region. We addressed this issue via a study of the sediments of Huguangyan Maar Lake (HML), a crater lake in southern China. Our results confirm that the sediments in HML are mainly derived from the erosional input of weathering products of wall rocks, via catchment runoff. Having established the provenance of the HML sediments, the sediment accumulation rate, mass accumulation rate, and geochemical element fluxes were used to reconstruct soil erosion processes in the HML catchment over the past-1400 years. The potential drivers of soil erosion were explored, and regional comparisons were made to evaluate the representativeness of this study. The results show that: 1) Higher precipitation before-830 CE, coupled with a lower level of human activity, promoted increased vege-tation coverage which reduced the rate of soil erosion. 2) Lower precipitation during 830 CE-1390 CE reduced the rate of soil loss. 3) Abundant precipitation was the main cause of the more intense soil erosion during 1390 CE-1878 CE, which may have been exacerbated by the reduced vegetation cover caused by intensive human activity. 4) During 1878 CE-2019 CE, the vegetation cover gradually recovered under the combined effects of vegetation restoration and higher precipitation, which reduced the rate of soil erosion within the HML catch-ment. Compared to the Chinese Loess Plateau, the erosion level in the HML catchment was relatively low during the period of intensive human activities. Overall, our results contribute to an improving understanding of the driving mechanisms of soil erosion, and they provide a guide for soil conservation measures in southern China.