137Cs-Based Variation of Soil Erosion in Vertical Zones of a Small Catchment in Southwestern China
| Autor: | Jia-cun Chen, Dongchun Yan, Anbang Wen, Tai-li Chen, Zhonglin Shi |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
010504 meteorology & atmospheric sciences
Health Toxicology and Mutagenesis Drainage basin fallout radionuclide 137Cs lcsh:Medicine Land cover 01 natural sciences Article Soil management Hengduan Mountains China 0105 earth and related environmental sciences Hydrology geography geography.geographical_feature_category soil erosion lcsh:R Public Health Environmental and Occupational Health Elevation 04 agricultural and veterinary sciences 040103 agronomy & agriculture 0401 agriculture forestry and fisheries Environmental science variation Soil conservation |
| Zdroj: | International Journal of Environmental Research and Public Health, Vol 16, Iss 8, p 1371 (2019) International Journal of Environmental Research and Public Health Volume 16 Issue 8 |
| ISSN: | 1660-4601 |
| Popis: | The study of the variability of soil erosion in mountainous areas provides the basis for soil and water conservation work and forest ecological construction in a targeted way. In this study, Liangshan Town catchment, a typical catchment in the Hengduan Mountains region, southwest China, was selected to investigate the variation of soil erosion in different vertical zones using the 137Cs tracing technique. The mean 137Cs reference inventories varied between 573.51 and 705.54 Bq/m2, with the elevation increasing from 1600 to 2600 m. The rates of soil erosion exhibited a significant variation. Under the same land cover condition, the average annual soil erosion modulus of high-elevation forest (elevation > 2200 m) was 400.3 t/(km2· a). However, the average annual soil erosion modulus of a low-elevation sparse forest (elevation < 1600 m) was as high as 1756 t/(km2· a). The average annual soil erosion modulus of the sloping farmland, mainly distributed at elevations of 1600&ndash 2200 m, was estimated to be 2771 t/(km2· a). These results indicate that effective soil management measures need to be implemented on the cultivated sloping land in the future. |
| Databáze: | OpenAIRE |
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