瀍河流域的河谷地貌结构及近万年以来土壤侵蚀量的估算  

Geomorphological Estimation of Soil Erosion in Chan River Area Since 10 000 aB.P.

作　　者：梁亮[1] 夏正楷[1] 

机构地区：[1]北京大学环境学院,北京100871

出　　处：《水土保持研究》2003年第3期77-79,共3页Research of Soil and Water Conservation

基　　金：国家自然科学基金项目 ( 4 0 1710 96) ;国家十五攻关预研究项目 ( 2 0 0 1BA80 5 B0 5 )资助

摘　　要：主要根据河谷地貌的结构和考古学文化分布的规律性 ,对河南孟津河流域 10 0 0 0年以来土壤侵蚀的规模作了估算。研究结果表明本区 10 0 0 0 a B.P.～ 4 0 0 0 a B.P.的平均土壤侵蚀模数达 92 8t/ (km2· a) ,4 0 0 0 a B.P.以来的平均土壤侵蚀模数达 15 73t/ (km2· a)。比较今天该地区的土壤侵蚀模数 10 0 0～ 4 0 0 0 t/ (km2· a) ,水土流失的严重程度呈现出与人类活动同步增强的趋势。Fieldworks in Chan River area have provided data to estimate the soil erosion since 10 000 aB.P. Based on the study of river valley and its spatial relationship with Neolithic sites, the volume of soil erosion during the past 10 000 years is estimated. Research results show that the soil erosion during 10 000 aB.P.~4 000 aB.P. is about 928 t/(km 2·a), and 1 573 t/(km 2·a) after 4 000 aB.P. Compared with the present soil erosion degree of this area,1 000~4 000 t/(km 2·a), the land loss has been gradually intensified with the growth of civilizations.

关 键 词：河流地貌 土壤侵蚀 人类活动 瀍河流域 考古学 文化分布 

分 类 号：S157[农业科学—土壤学]