摘要
根据研究，首先确定先秦至西汉时期为推估黄河中游土壤侵蚀背景值的年代。然后根据由黄河冲积扇的堆积量和古黄河口泥沙淤积量两种途径的推估结果，经综合考虑后认为，在历史上人类活动较小情况下，黄河中游土壤侵蚀的自然背景值为每年６．５～１０亿ｔ。
According to the study.the paper firstly defines the period from Qin Dynasty to Western Han as thetime for estimating the bcakground value of soil erosion in the middle Yellow River. Then it defines that thebackground value of soil erosion of the middle Yellow River is 650-1000 millon tons/year according to thetwo-way calculation results of aggradation volume of the river alluvial fan and sediment deposition volumeof the ancient river mouth, after comprehensive consideration and under the conditions of less human activities in history.
出处
《人民黄河》
CAS
北大核心
1994年第2期5-8,共4页
Yellow River
关键词
土壤侵蚀
黄河中游
自然背景值
泥沙淤积
background value of soil erosion
human activities
the middle Yellow River
