梯田建设和淤地坝淤积对土壤侵蚀影响的定量分析

ISWC OpenIR > 水保所知识产出(1956---)

	梯田建设和淤地坝淤积对土壤侵蚀影响的定量分析
其他题名	Influences of Terrace Construction and Check Dam Silting-up
	高海东; 李占斌; 李鹏; 贾莲莲; 张翔
	2012
发表期刊	地理学报
卷号	67 期号:5 页码:599-608
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299.56t×hm-2×a-1,下部土壤侵蚀模数为136.64t×hm-2×a-1,平均侵蚀模数为229.74t×hm-2×a-1;顶级期峁边线上部土壤侵蚀模数为39.10t×hm-2×a-1,下部土壤侵蚀模数为1.10t×hm-2×a-1,平均侵蚀模数为22.81t×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。
其他摘要	To research the terrace construction and check dam silting-up soil erosion effects, this paper firstly established a generalized model consisting of terrace, slope land, steep slope grassland, and check dam land in hilly and gully region of Loess Plateau, defined the pioneer phase, transitional phase and climax phase. Then it used the revised universal soil loss equation (RUSLE) to analyze soil erosion modulus in different periods. The results showed that pioneer phase and climax phase are the limit state of soil and water conservation. In pioneer phase, soil erosion modulus is 299.56 t×hm-2 ×a-1 and 136.64 t×hm-2 ×a-1 in the upper and lower parts of demarcation of hill and gully slope, respectively, and the average erosion modulus is 229.74 t×hm-2×a-1. In climax phase, soil erosion modulus is 39. 10 t×hm-2×a-1 and 1.10 t×hm-2×a-1 in the upper and lower parts, and the average erosion modulus is 22.81 t×hm-2× a-1. In the transitional phase, with the increase of the ratio of the terrace, soil erosion modulus index is reduced at upper Mao sideline; with the increase of the sedimentation of the height, soil erosion modulus shows a linear decrease at lower Mao sideline.
关键词	水土保持 Soils 黄土高原 Sand 修正通用土壤流失方程 Models 演替 Erodibility Very Fine Sand Contents k Value Calculating Method Black Soil Region Of
语种	中文
文献类型	期刊论文
条目标识符	sbir.nwafu.edu.cn/handle/361005/5254
专题	水保所知识产出(1956---)
推荐引用方式 GB/T 7714	高海东,李占斌,李鹏,等. 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.
APA	高海东,李占斌,李鹏,贾莲莲,&张翔.(2012).梯田建设和淤地坝淤积对土壤侵蚀影响的定量分析.地理学报,67(5),599-608.
MLA	高海东,et al."梯田建设和淤地坝淤积对土壤侵蚀影响的定量分析".地理学报 67.5(2012):599-608.

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