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Using Cs-137 and Pb-210(ex) to Investigate the Soil Erosion Moduli of the Sandy Area of Typical Grasslands in Northern China

文献类型：期刊论文

作者Guo, Xuan1,2; Hu, Yunfeng1,2; Zhang, Yunzhi1,2; Zhen, Lin2,3
刊名SUSTAINABILITY
出版日期2022-10-01
卷号14期号:19页码:18
关键词farming-pastoral ecotone isotope tracer reference inventory erosion moduli dynamic change
DOI10.3390/su141912137
通讯作者Hu, Yunfeng(huyf@lreis.ac.cn)
英文摘要Soil erosion results in land degradation and desertification in northern China. The Xilingol League of Inner Mongolia is an important part of the "Two Barriers and Three Belts", and has been given the main function of "a windbreak and sand-fixing belt of northern China". Accurate measuring of soil erosion moduli, analyzing the differences in soil erosion moduli across different periods and regions, are the basis for carrying out soil conservation and evaluating the effectiveness of ecological governance. Some radioisotopes are good environmental tracers because they are closely combined with the fine particles of the surface soil and are only affected by the mechanical movement of soil particles. In this paper, Taipusi Banner and Zhengxiangbai Banner, which are in the farming-pastoral ecotone in northern China, were selected as the study area. A regional reference inventory, that is, the activity of Cs-137 and Pb-210(ex) in the sample without any soil erosion, accumulation/deposition, or any kind of manual disturbances, as well as the soil erosion moduli, were determined by Cs-137 and Pb-210(ex) composite tracing technology and multiple lines of evidence. The results are as follows: (1) The regional Cs-137 reference inventory was 1928 Bq center dot m(-2), and the regional Pb-210(ex) reference inventory was 10,041 Bq center dot m(-2). (2) On a 50-year time scale, the soil erosion moduli in the study area ranged from 140 t center dot km(-2)center dot a(-1) to 1030 t center dot km(-2)center dot a(-1); on a 100-year scale, the soil erosion moduli in the study area ranged from 35 t center dot km(-2)center dot a(-1) to 2637 t center dot km(-2)center dot a(-1); the entire study area was in a lightly eroded state. (3) Compared with two periods before and after the 1970s, the southern parts (cultivated land and grassland) experienced an increasing trend in soil erosion moduli due to land reclamation, grassland grazing, and other activities. Due to weakening wind and increasing precipitation, soil erosion moduli in the northern parts (southern margin of the Hunshandake Sandy Land) slowed down. The study also discussed the uncertainty and application potential of isotope-tracing technology in sandy land of typical grasslands in northern China.
WOS关键词WIND EROSION ; TRACING TECHNIQUE ; RATES ; LAND ; RADIONUCLIDES ; CATCHMENT ; MODELS ; REGION
资助项目National Natural Science Foundation of China[41977421] ; Strategic Priority Research Program of the Chinese Academy of Sciences[41977421] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA20010202]
WOS研究方向Science & Technology - Other Topics ; Environmental Sciences & Ecology
语种英语
出版者MDPI
WOS记录号WOS:000867192300001
资助机构National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences
源URL[http://ir.igsnrr.ac.cn/handle/311030/185778]  
专题中国科学院地理科学与资源研究所
通讯作者Hu, Yunfeng
作者单位1.Chinese Acad Sci, State Key Lab Resources & Environm Informat Syst, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Key Lab Resources Use & Environm Remediat, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
推荐引用方式
GB/T 7714		 Guo, Xuan,Hu, Yunfeng,Zhang, Yunzhi,et al. Using Cs-137 and Pb-210(ex) to Investigate the Soil Erosion Moduli of the Sandy Area of Typical Grasslands in Northern China[J]. SUSTAINABILITY,2022,14(19):18.
APA Guo, Xuan,Hu, Yunfeng,Zhang, Yunzhi,&Zhen, Lin.(2022).Using Cs-137 and Pb-210(ex) to Investigate the Soil Erosion Moduli of the Sandy Area of Typical Grasslands in Northern China.SUSTAINABILITY,14(19),18.
MLA Guo, Xuan,et al."Using Cs-137 and Pb-210(ex) to Investigate the Soil Erosion Moduli of the Sandy Area of Typical Grasslands in Northern China".SUSTAINABILITY 14.19(2022):18.

入库方式： OAI收割

来源：地理科学与资源研究所

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