| 水源涵养基本功能区水力侵蚀现状分析简 |
| |
| 引用本文： | 刘宪春,李智广,王爱娟.水源涵养基本功能区水力侵蚀现状分析简[J].中国水土保持科学,2014(1):62-67. |
| |
| 作者姓名： | 刘宪春 李智广 王爱娟 |
| |
| 作者单位： | 水利部水土保持监测中心,北京100055 |
| |
| 基金项目： | 项目名称：水利部项目＂第一次全国水利普查＂（1261221610325）、＂全国水土流失动态监测与公告＂（1261321610321） |
| |
| 摘 要： | 针对全国水土保持区划中确定的22个具有水源涵养功能的基本功能区,利用第1次全国水利普查获取的水力侵蚀数据,分析这些区域的水力侵蚀现状.结果表明：1）水源涵养基本功能区水力侵蚀以轻中度侵蚀为主,超过80％,强烈、极强烈、剧烈面积分布较少,与全国基本状况相似;2）与第2次全国土壤侵蚀遥感调查成果相比,水源涵养基本功能区水力侵蚀整体上有所好转,水力侵蚀总面积减少3.75％,轻中度侵蚀面积大幅减少,减幅超过20％;3）水源涵养基本功能区局部地区水力侵蚀形势严峻,极强烈和剧烈侵蚀面积虽然不大,但是与第2次遥感调查成果相比,面积均有所增加,相对增幅较大,说明局部地区存在水力侵蚀恶化的现象.
|
| 关 键 词： | 水土保持 基本功能区 水力侵蚀 |
Analysis of water erosion in soil and water conservation areas with basic water conservation function |
| |
| Liu XianchunSoil and Water Conservation Mornitoring Center,The Ministry of Water Resources of the People＇s Republic of China,Beijing,China〈br〉,Li ZhiguangSoil and Water Conservation Mornitoring Center,The Ministry of Water Resources of the People＇s Republic of China,Beijing,China〈br〉,Wang Aijuan.Analysis of water erosion in soil and water conservation areas with basic water conservation function[J].Science of Soil and Water Conservation,2014(1):62-67. |
| |
| Authors: | Liu XianchunSoil and Water Conservation Mornitoring Center The Ministry of Water Resources of the People＇s Republic of China Beijing China〈br〉 Li ZhiguangSoil and Water Conservation Mornitoring Center The Ministry of Water Resources of the People＇s Republic of China Beijing China〈br〉 Wang Aijuan |
| |
| Institution: | (Soil and Water Conservation Mornitoring Center,The Ministry of Water Resources of the People＇s Republic of China, 100055 ,Beijing,China)〈br〉 |
| |
| Abstract: | Water erosion in twenty two soil and water conservation areas with basic water conservation function that were defined in the national regionalization of soil and water conservation was analyzed using the data obtained from the first national water resources census.More than 80％ of the areas suffered from light or moderate water erosion and few are subjected to severe or extremely severe erosion,which is consistent with the nation-wide census result.Compared with the result of the second national remote sensing investigation of soil erosion,the water erosion got improvement on the whole：the total area of water erosion decreased by 3.75％,and the area of light and moderate erosion decreased markedly by over 20％.Nevertheless,the overall situation of water erosion in these areas is still serious.Regardless of the low percentage of the area with severe or extremely severe erosion,their absolute area increased to a large extent compared with the result of the second national remote sensing investigation,indicating the deterioration of water erosion in some areas. |
| |
| Keywords: | soil and water conservation basic functional areas water erosion |
| 本文献已被 CNKI 维普 等数据库收录！ |
|
