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涞源县土壤侵蚀与地形分布特征研究

标题: 涞源县土壤侵蚀与地形分布特征研究
英文标题: Study on Soil Erosion and Its Terrain Features in Laiyuan County
作者: 李大伟,赵文廷,尹海魁,许皞,周亚鹏
英文作者: LI Da-wei,ZHAO Wen-ting,YIN Hai-kui,XU Hao,ZHOU Ya-peng,College of Resources and Environment Science, Agricultural University of Hebei,College of Land and Resources, Agricultural University of Hebei,Baoding Academy of Ecological Civilization in Hebei,Baoding Observation Area of Ecological Environment in Mining Field
出版时间: 2016-06-06
机构: 河北农业大学资源与环境科学学院,河北农业大学国土资源学院,河北省保定市生态文明研究院,矿山生态环境保定野外观测基地
关键词: 土壤侵蚀,GIS,分布特征,涞源县
英文关键词: Soil erosion,GIS,Distribution feature,Laiyuan County
刊名: 土壤通报
英文刊名: Chinese Journal of Soil Science
ISSN: 0564-3945
期号: 03
卷号: v.47
国内刊号: 21-1172/S
基金: 河北省重点科技支撑项目(12235401); 河北省高等学校科学技术项目(QN2015168)资助
主题: 涞源县土壤侵蚀与地形分布特征研究
页码: 199-206
分类号: S157.1
出版单位: 土壤通报
是否SCI: 0
是否EI: 0
是否核心: 0
摘要: 在地理信息系统(Arcgis10.0)的支持下,运用修正水土流失通用方程(RUSLE),分析评估河北省矿业大县——涞源县土壤侵蚀现状及土壤侵蚀等级分布状况。在此基础上,叠加土壤侵蚀强度分布图和地形图,分析了土壤侵蚀强度对于坡度、高程、坡向等地形因子的分布特征。研究表明:涞源县土壤侵蚀现状主要为微度侵蚀,面积约为98570 hm~2,占县域总面积的41%;不同坡度和高程下的土壤侵蚀强度均先增大后减小,呈单峰分布趋势,最大值分别出现在坡度15~25°、高程900 m~1100 m处,坡向的土壤侵蚀强度最大值出现在东南坡向上;不同侵蚀强度在各坡度范围内所占面积比峰值随着侵蚀强度等级的增加呈规律性的出现在坡度级别较高的地方,侵蚀强度等级越高,土壤侵蚀面积比峰值出现处的坡度级别也越高。
英文摘要: The status of soil erosio n and its spatial distribution patterns in Laiyuan County were analyzed and evaluated using the modified soil erosion equation(RUSLE) combined with the geographic information system(Arcgis10.0). Then the distribution features of terrain factors of slope degree, elevation, slope direction to soil erosion in Laiyuan County were obtained by the overlap of the distribution map of soil erosion intensity and terrain map.Results indicated that the major erosion type in Laiyuan County was very slight erosion, accounting for 41% of the total area of 98570 hm~2. Soil erosion intensity under different slope degree and elevation showed first increased and then decreased trend and the unimodal trend. And the maximum value of soil erosion intensity was found in the southeast slope with 15 ~ 20¡ã slope and 900 ~ 1100 m height. The more serious erosion intensity was, the higher slope grade level was at the peak area ratio of soil erosion