黑土侵蚀坡积过程分析

Analysis of Slope Sedimentary Process in Blacksoil Erosion

黑土侵蚀过程受到地质、地貌、气候、土壤、植被等自然因子的综合影响,人类活动对生态平衡的破坏而加速了土壤侵蚀过程,通过对海伦前进小流域坡积发育历史、地层序列的有机碳、腐殖质组分变化的研究,分析海伦前进小流域的土壤侵蚀发生规律。结果表明：剖面1在85 cm以上有明显的坡积后的沉积过程;剖面2坡积层次出现在27 cm以上;剖面3土壤侵蚀过程中第1次的坡积沉积过程发生在85~120 cm处,现代侵蚀发生在土壤表层。

The blacksoil erosion is a complex geomorphological process caused by geology,topography,climate,soil,vegetation and other natural factors,and the cumulative destruction of human activity on the ecological balance has accelerated soil erosion.This paper want to explore the regularity of soil erosion in the Qianjin Watershed,Hailun County,by studying the developing history,organic carbon of stratigraphic sequence and changes in humus.Results demonstrated that： the sedimentary processes were obviously after slope wash within 85cm in section 1;slope wash appeared in 27 cm above of section 2;in section 3,the first slope wash sedimentary processes occurred in 85-120 cm place,and modern soil erosion occurred in the top soil in the soil erosion process.