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Analysis of Soil Erosion Environment Background in China Hills

机译：中国丘陵土壤侵蚀环境背景分析

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There is more than 70% mountain area in China, and these mountains are the resources of rivers, such as Changjiang river, Huanghe river. Moreover, these hills are resources of branches of main rivers. Soil erosion in these areas will lead to river environment change, and causes more disasters, such as flood. With RS and GIS supported, this paper analyses features of soil erosion environment background in these hill areas, then we suggest some points for treating soil erosion. The steps as fellow: first, we extract hill coverage from DEM with the elevation less than 1,000m according to traditional method, second, we set hill coverage as a mask in ARC/INFO to get environment background coverage, that is we have slope coverage, NDVI coverage, etc. Third, we combine these coverages with soil erosion coverage in ARC/INFO. Soil erosion is made by multi-factor. This paper discusses soil erosion of hill under different eco-environment background. All of soil erosion type and intensity takes place in china hills. With the temperature, rainfall, NDVI, etc changing, the soil erosion changes in zone. From results, for the eco-environment background zone law, the intensity of water soil erosion decreases from east to west, which shows some treatments are taken in east China. However, the change direction of the intensity of wind erosion is contrary to water erosion'. The intensity of water erosion is great than wind erosion' in interchange of water and wind erosion. So we suggest some treatments for controlling soil erosion.
机译：中国山区有超过70％，这些山脉是河流的资源，如长江，黄河河。此外，这些山丘是主要河流分支的资源。这些地区的土壤侵蚀将导致河流环境变化，并导致洪水等更多灾难。凭借RS和GIS支持，本文分析了这些山地地区土壤侵蚀环境背景的特点，然后我们建议某些地方以治疗土壤侵蚀。作为研究员的步骤：首先，我们根据传统方法提取了DEM的山丘覆盖率，根据传统方法，第二，我们将Hill Reckage作为弧/信息中的掩码设置为环境背景覆盖，这是我们有坡度覆盖，NDVI覆盖范围等第三，我们将这些覆盖范围与弧/信息中的土壤侵蚀覆盖相结合。土壤侵蚀是通过多因素进行的。本文讨论了不同生态环境背景下的小山的土壤侵蚀。所有土壤侵蚀类型和强度都在中国山丘进行。随着温度，降雨，NDVI等，土壤侵蚀变化区。从结果，对于生态环境背景区法，水土侵蚀强度从东到西部减少，这表明了一些治疗在华东地区。然而，风腐蚀强度的变化方向与水侵蚀相反。水侵蚀的强度远远超过风腐蚀，在水和风腐蚀的交换中。因此，我们建议使用一些治疗土壤侵蚀的治疗方法。

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