地理学报 ›› 2012, Vol. 67 ›› Issue (5): 599-608.doi: 10.11821/xb201205003
高海东1, 李占斌1,2, 李鹏2, 贾莲莲3, 张翔2
收稿日期:
2011-11-13
修回日期:
2012-02-21
出版日期:
2012-05-20
发布日期:
2012-05-20
通讯作者:
李占斌, 男, 河南镇平人, 研究员, 博士生导师, 研究方向为土壤侵蚀与水土保持。E-mail: zbli@ms.iswc.ac.cn
基金资助:
国家重点基础研究发展计划(973 计划) 项目(2011CB403302); 国家自然科学基金项目(40971161;41071182)
GAO Haidong1, LI Zhanbin1,2, LI Peng2, JIA Lianlian3, ZHANG Xiang2
Received:
2011-11-13
Revised:
2012-02-21
Online:
2012-05-20
Published:
2012-05-20
Supported by:
National Key Basic Research Program of China (973 Program), No.2011CB403302; National Natural Science Foundation of China, No.40971161; No.41071182
摘要: 为了研究梯田建设和淤地坝淤积对流域土壤侵蚀的影响,本文首先建立了包含梯田、坡耕地、陡坡草地以及坝地在内的黄土高原丘陵沟壑区流域简化模型,并定义了流域的先锋期、过渡期以及顶级期三个状态,使用修正通用土壤流失方程(RUSLE) 分析了不同时期的流域土壤侵蚀模数。结果显示:先锋期与顶级期是流域水土保持治理的极限状态,先锋期峁边线上部土壤侵蚀模数为299.56 t×hm-2×a-1,下部土壤侵蚀模数为136.64 t×hm-2×a-1,平均侵蚀模数为229.74 t×hm-2×a-1;顶级期峁边线上部土壤侵蚀模数为39.10 t×hm-2×a-1,下部土壤侵蚀模数为1.10 t×hm-2×a-1,平均侵蚀模数为22.81 t×hm-2×a-1;在过渡期,随着梯田面积比例的增加,峁边线上部土壤侵蚀模数呈指数减少,而随着淤积高度的增加,峁边线下部土壤侵蚀模数呈线性减少,文章最后对这一结论进行了实证分析。
高海东, 李占斌, 李鹏, 贾莲莲, 张翔. 梯田建设和淤地坝淤积对土壤侵蚀影响的定量分析[J]. 地理学报, 2012, 67(5): 599-608.
GAO Haidong, LI Zhanbin, LI Peng, JIA Lianlian, ZHANG Xiang. Influences of Terrace Construction and Check Dam Silting-up on Soil Erosion[J]. Acta Geographica Sinica, 2012, 67(5): 599-608.
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