中国水土保持科学2012，Vol.10Issue(2)：21-28,8.
典型黑土区村级尺度侵蚀沟演变
Evolvement of gully erosion in village scale in the typical black soil area
摘要
Abstract
The aggravation of gully erosion represents the severity of water and soil loss in the typical black soil area in northeast China. Slope steepness and tillage are important natural and artificial factors that affect the evolution of gully erosion, respectively. Applying high spatial resolution remote sensing data is a useful method in the identification of the distribution and evolution of erosion gully. The distribution and density of erosion gully, ridge direction as well as land use of the village-scale in the year 1968 and 2009 were collected from two submeter remote sensing images by GIS and RS technologies, and the topographical data of corresponding areas such as contour, slope steepness, slope length and slope steepness along direction of ridge were extracted from the 1: 10 000 relief map. The dynamic of erosion gully and its driving factors during the passed 41 years were analyzed by Arcgis spatial analysis function. The results showed: 1) the density of erosion gully markedly increased during the past 41 years. The density of erosion gully from remote sensing interpretation by submeter resolution was much higher than that on previous lower resolution remote sensing data; 2 ) The largest variation area of erosion gully density was found in the region of slope steepness between 0. 25 ° and 1.5°, while the density of erosion gully decreased in the area of slope steepness more than 8°due to reforestation; 3) The highest density of erosion gully was found in the zone of slope length between 300 m and 500 m of the slope; 4 ) During the recent 41 years, the cultivated area increased in the region of gradient along the ridge between 0 and 0. 25 ° after ridge direction was changed, whereas it decreased in the region of slope steepness larger than 0.25°.关键词
侵蚀沟密度/演变/黑土区Key words
the density of erosion gully/ evolvement/ black soil area引用本文复制引用
李浩,张兴义,刘爽,Yury Kravchenko,Kateryna Ivanova,李续峰,陈强..典型黑土区村级尺度侵蚀沟演变[J].中国水土保持科学,2012,10(2):21-28,8.基金项目
国家自然科学基金“黑土区长坡垄作条件下土壤侵蚀坡长指数及影响因素研究”(41171230) （41171230）
水利部公益性行业科研专项“东北地区水土保持措施因子研究”(201001026) （201001026）
