ISWC OpenIR  > 水保所知识产出(1956---)
波状坡耕地拦挡淀排技术水沙调控效果
丁新辉1; 谢永生1,2; 魏富娟3; 蔡铭阳4; 索改弟2
2016
Source Publication中国水土保持科学
Volume14Issue:3Pages:123-129
Abstract

我国北方土石山区的地形特点是土层薄、坡长坡陡、波状起伏、以坡耕地水土流失为主。该区水土流失严重,
侵蚀沟道密集,对当地和下游造成严重的水土流失问题。为解决波状坡耕地水土流失的治理问题,针对波状坡耕
地形态特征和水土流失特点,设计波状坡耕地拦挡淀排技术,并将其布设于野外径流小区进行观测。结果表明: 1)
拦挡淀排技术对波状坡耕地削流和减蚀作用均有较好的效果,2 年平均的削流率和减蚀率分别为53. 72% 和
87. 21%,该技术对于各种类型的降雨均有较好的坡面削流效果,该措施的排水系统表现出可靠性和稳定性。2) 通
过对不同类型的降雨造成的径流量分析,拦挡淀排技术对波状坡耕地的径流调控率在降雨强度较大的情况下能发
挥出较好的效果。通过趋势线分析,对照小区的产沙量与降雨量间的直线斜率大于措施小区( 趋势线接近水平) ,
说明拦挡淀排措施下不同降雨量产生的泥沙量都很小,拦挡淀排技术减沙效果显著。3) 通过对次降雨资料分析
表明,措施小区泥沙侵蚀量均远小于对照小区。波状坡耕地的年泥沙侵蚀量主要是由几场大暴雨引起的,拦挡淀
排技术在大暴雨情况下也有显著的减蚀效果。通过添加趋势线分析发现措施小区泥沙侵蚀量与降雨量,降雨强度
和I30
之间均没有良好的线性关系,措施小区泥沙侵蚀量受降雨量,降雨强度和I30
的共同影响。在雨季,措施小区
泥沙侵蚀量受地表粗糙度的影响较大。4) 从农作物产量来看,相同施肥条件下,拦挡淀排技术在干旱年比平水年
份对作物增产的作用更明显。因此,拦挡淀排技术能够有效防治波状坡耕地水土流失,可作为一项新型坡耕地水
土流失防治技术。

Other Abstract

[Background] The terrain features of the rocky mountain area in northern China are
characterized by thin soil layer,long steep slope,wave type undulating,mainly soil and water erosion in
slope farmland. The soil erosion of this area is serious,and the erosion channels are intensive,causing
serious soil and water loss to the local and downstream. [Methods] In order to solve the soil erosionproblems of wave type slope farmland,based on the morphological features of wave type slope farmland
and its characteristics of soil and water loss, we designed the interception-precipitation-drainage
technology on wave type slope,deployed the cells with the technology ( measure cell) and contrast cell,
and observed the runoff and sand output. [Results] 1) The average rate of cutting flow and rate of
erosion reduction on the wave type slope by interception-precipitation-drainage technology in 2 years were
53. 72% and 87. 21%,respectively,meaning that favorable results of both cutting flow and reducing
erosion achieved. The technology presented solid cutting runoff effect on slope for all kinds of rainfall,
and the drainage system of the measure cell showed feasible reliability and stability. 2) Analyzing the
erosion caused by different rainfall intensity,the interception-precipitation-drainage technology on wave
type slope played a better effect on the runoff regulation in large rain intensity. Through the trend line
analysis,the linear slope between runoff and rainfall of the contrast cell was greater than that of measure
cell ( trend line close to horizontal level) ,indicating that the amount of sediment produced by different
rainfall was very small under the interception-precipitation-drainage technology on wave type slope,i. e. ,
the sediment reduction effect of the interception-precipitation-drainage technology on the wave type slope
was significant. 3 ) According to the analysis of the data of individual rainfall,the sediment erosion
amount on the measure cell was much smaller than that of the contrast one. The annual sediment erosion
on wave type slope farmland was mainly caused by several downpours,the interception-precipitationdrainage
technology on wave type slope had significant effect on decreasing erosion under the downpours.
Analysis by adding trend line showed that sediment erosion in the measure cell had no good linear
relationship with rainfall,rainfall intensity and I30
,and the sediment erosion on the measure cell was
influenced jointly by rainfall,rainfall intensity and I30 . Moreover,in the rainy season,the sediment
erosion on the measure cell was largely affected by surface roughness. 4) Regarding the crop yield,on
the same condition of fertilization,the increasing production effect of the wave type slope interceptionprecipitation-
drainage technology was more obvious in dry year than flat water year. [Conclusions]
Therefore,the interception-precipitation-drainage technology on the wave type slope may effectively
prevent the soil and water loss on wave type slope farmland,which can be used as a novel control
technology of soil erosion on slope farmland.

Keyword波状坡耕地 水土流失 削流率 减蚀率 拦挡淀排 北方土石山区
Indexed By中文核心期刊要目总览
Language中文
Document Type期刊论文
Identifierhttp://ir.iswc.ac.cn/handle/361005/8531
Collection水保所知识产出(1956---)
Affiliation1.中国科学院水利部水土保持研究所
2.西北农林科技大学资源环境学院
3.西北农林科技大学风景园林艺术学院
4.西北农林科技大学水土保持研究所
First Author Affilication中国科学院水利部水土保持研究所
Recommended Citation
GB/T 7714
丁新辉,谢永生,魏富娟,等. 波状坡耕地拦挡淀排技术水沙调控效果[J]. 中国水土保持科学,2016,14(3):123-129.
APA 丁新辉,谢永生,魏富娟,蔡铭阳,&索改弟.(2016).波状坡耕地拦挡淀排技术水沙调控效果.中国水土保持科学,14(3),123-129.
MLA 丁新辉,et al."波状坡耕地拦挡淀排技术水沙调控效果".中国水土保持科学 14.3(2016):123-129.
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