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| Current situation of soil erosion and its countermeasures in Tibet |
| Zhao Huinlin1, Lu Xinrui2, Fan Xiangchuan1 |
| 1.China Water Northeastern Investigation, Design & Research Limited Liability Company; 2.Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences：130012, Changchun，China |
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Abstract In Tibet, soil erosion is dominated by water erosion, wind erosion and freeze-thaw erosion. Soil and water loss is mainly affected by natural factors, including precipitation, gale, temperature, topography and geomorphology, geology, vegetation etc., and human factors, for example, over cultivation, plundering resource, deterioration of ecological environment and so on. In order to control the complex and varied type of soil and water loss, combining natural attributes and soil and water loss characteristics, we divided Tibet into southeastern water erosion region, western wind erosion region, northern freeze-thaw erosion region and middle part composite erosion region. According to natural attributes and affecting factors of each erosion region, we proposed control measures and development mainly focusing on water erosion, wind erosion and freeze-thaw erosion, and composite erosion in different periods. To attain the goal of preventing soil and water loss in Tibet and protecting the ecological environment, propaganda of preventing soil and water loss must be strengthen, mechanisms and control measures of soil and water loss should be studied, and soil and water conservation measures should be carried out.
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Received: 22 December 2011
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