水土保持学报2012，Vol.26Issue(5)：55-58,4.
北方农牧交错带缓坡耕地土壤风蚀特征
Soil Wind Erosion Characteristics of Hilly Farmland with Gentle Slope at Crisscross Area of Agriculture and Pasture in the North
摘要
Abstract
The thesis studied on soil erosion characteristics in different slope aspects and position by the means of field observation.The results show that(1)Wind speed increased with the terrain rising in different terrain parts of hilly farmland with gentle slope.Mainly due to the role of micro-topography,the southern slope of the wind speed slightly higher than the northern slope.(2)Amounts of soil wind erosion and wind speed showed the variation of the exponential function.Amounts of soil wind erosion increased with wind speed rising.(3)Axis of symmetry to the top of the hill,the wind erosion of the north slope and the southern slope was a symmetrical distribution.The southern slope of wind erosion was slightly larger than the north slope.North slope erosion amount accounted for 88.6% of the southern slope.Wind erosion amounts compared to the five terrain position,maximum values did not appear in the top positions.(4)The wind erosion amount increased with height and wind speed in the height of 0~6 cm in the middle and bases of slope and 0~8 cm in the top of the slope.Wind erosion quantity with height increase showed the law of a negative exponential function in the height of 8~60 cm.When the height was bigger than 6 cm and smaller than 20 cm,lapse rates was greater.When the height was more than 20 cm,lapse rates was smaller.关键词
北方农牧交错带/缓坡耕地/土壤风蚀Key words
crisscross area of agriculture and pasture in the North/hilly farmland with gentle slope/soil wind erosion分类
农业科技引用本文复制引用
康玉梅,常春平,王仁德,李赞..北方农牧交错带缓坡耕地土壤风蚀特征[J].水土保持学报,2012,26(5):55-58,4.基金项目
国家自然科学基金青年项目 （）
河北省自然科学基金项目 （）
