LIU Jing,XIA Zheng-kai.Fluvial Geomorphology of Zhaitang Basin and Water and Soil Erosion Since 10 000 a B.P.[J].Research of Soil and Water Conservation,2005,12(04):90-92.
斋堂盆地的河谷地貌结构及近万年以来的水土流失概况
- Title:
- Fluvial Geomorphology of Zhaitang Basin and Water and Soil Erosion Since 10 000 a B.P.
- 分类号:
- S157;P531
- 摘要:
- 根据斋堂盆地的河谷地貌结构，估算出10000aB.P.～8500aB.P.的河流年平均侵蚀量为158.0×103t/a，8500aB.P.～4000aB.P.的河流年平均堆积量为3.31×103t/a，4000aB.P.以来的河流年平均侵蚀量为96.3×103t/a。经比较得出，该区近万年以来的水土流失，受自然条件影响大。但随着人类活动作用的加强，人为因素逐渐成为水土流失的主导因素，现今的土地受人为破坏严重。
- Abstract:
- Fieldworks of fluvial geomorphology of Zhaitang basin provided that fluvial erosion of every year during 10 000 a B. P.～8 500 a B. P. is about 158.0× 103 t/a, and fluvial accumulation of every year during 8 500 a B. P.～4 000 a B. P. is about 3.31× 103 t/a, and fluvial erosion of every year since 4 000 a B. P. is about 96.3× 103 t/a.Comparison of those shows that the main reason of water and soil erosion in this place since 10 000 a B. P. is the nature condition.But with the strengthen of human activity, man-made factors are becoming the main reasons, and the land is seriously destroyed by people.
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备注/Memo
收稿日期:2005-4-26
基金项目:国家教育部博士点基金（编号：20030001100）
作者简介:刘静（1979- ），女，硕士研究生，主要从事第四纪环境及全球变化方面的研究。