| 宁夏土壤侵蚀动态变化与原因分析 |
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| 引用本文： | 吴永红.宁夏土壤侵蚀动态变化与原因分析[J].干旱区研究,2004,21(3):259-262. |
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| 作者姓名： | 吴永红 |
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| 作者单位： | 黄河水利委员会,西峰水土保持站,甘肃,西峰,745000 |
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| 基金项目： | 黄委会招投标项目“黄河流域宁夏片水土保持遥感普查” |
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| 摘 要： | 通过对 1990年和 1999年两次土壤侵蚀遥感普查数据的对比 ,从类型、面积、强度、分布等方面对宁夏土壤侵蚀的动态变化进行了较为详细的分析。结果表明 :宁夏回族自治区各类型区水土流失面积有所减小 ,土壤侵蚀的剧烈程度普遍减弱。初步分析认为 ,土壤侵蚀变化的原因 ,除两次普查存在方法上的系统误差外 ,水土保持的作用功不可没。针对不同类型区土壤侵蚀的特点 ,提出了今后应采取的相应防治方略。
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| 关 键 词： | 宁夏 土壤侵蚀 动态变化 遥感 |
| 文章编号： | 1001-4675(2004)03-0259-04 |
Analysis on the Dynamic Change and the Causes of Soil Erosion in Ningxia Hui Autonomous Region |
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| WU Yong-hong.Analysis on the Dynamic Change and the Causes of Soil Erosion in Ningxia Hui Autonomous Region[J].Arid Zone Research,2004,21(3):259-262. |
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| Authors: | WU Yong-hong |
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| Abstract: | In this paper, the dynamic change of soil erosion in Ningxia Hui Autonomous Region is analyzed in detail from aspects of the types, areas, intensity, distribution, etc. of soil erosion by comparing the RS data of soil erosion in 1990 and 1999. The results show that the areas and the intensity of soil erosion in all the types in Ningxia Hui Autonomous Region are reduced to varying degrees. It is considered that, except the systematical errors from the different applied methods in these two general surveys, the reduction of soil erosion is mainly brought about by the soil and water conservation. Some measures are put forward for the further soil and water conservation in the future. It is suggested to regard the objectives of improving the ecological environment, reducing the silt content of the Yellow River, and increasing the farmers' income as the purposes of soil and water conservation. Concretely, it is suggested to regulate the land use structure, increase the dynamics of afforestation and grass planting, further implement the prevention and control of soil erosion and land desertification, and improve the ecological environment. |
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| Keywords: | Ningxia soil erosion dynamic change remote sensing |
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