DING Jin-li, ZHENG Fen-li, ZHANG Xin-bao, et al. Appl ication of 7Be to Study Spatial Distributed Characteristics of Soil Erosion on Hillslopes Before and Af ter Erosive Rainfall Occurrence[J]. Bulletin of Soiland Water Conservation, 2005, 24(2): 16-19.
DING Jin-li, ZHENG Fen-li, ZHANG Xin-bao, et al. Appl ication of 7Be to Study Spatial Distributed Characteristics of Soil Erosion on Hillslopes Before and Af ter Erosive Rainfall Occurrence[J]. Bulletin of Soiland Water Conservation, 2005, 24(2): 16-19.DOI:
The spatial distributed characteristics of soil erosion on straight hillslopes before and after erosive rainfall are studied with 7Be trace method and field investigation. The results showed that within 20 m of slope length
7Be inventory at 0~2 cm deepth of soil profile in different sloping locations was not significant before occurrence of erosive rainfall
but after occurrence of erosive rainfall in 2004
7Be inventory in different sloping locations was great significant.7Be inventory at 0~2 cm deep after occurrence of erosive rainfall and difference values of 7Be inventory before and after erosive rainfall occurrence decreased as slope length increased with 20m slope length. This indicated that soil erosion increased generally as the increase of slope length. There are great differences in detachmentor deposition process at different sloping locations. At 0~5 m slope length of the upper slope
deposition process was dominant; but at 8~15 m of slope length