ISWC OpenIR  > 水保所知识产出(1956---)
人工降雨条件下耕翻面积对水土流失的影响
李龙1; 郝明德1,2; 王安1; 董晓兵1; 曹静静3
2015
发表期刊水土保持通报
卷号35期号:5页码:34-44
摘要

[目的]探讨耕翻面积对水土流失的影响,为黄土高原地区农田水土流失防治提供依据。[方法]
通过人工模拟降雨试验,研究了3种坡度下不同耕翻面积的产流和产沙特性。[结果]耕地的产流和产沙
特征除了与坡度、雨强以及土壤前期含水量等因素有关外,还与耕翻面积有密切关系。坡度相同时,随耕
翻面积的增加初始产流逐渐延后;耕翻面积相同时,随着坡度的增大径流量有增大的趋势,在坡度15°的情
况下,耕翻50%时径流量最大。相同坡度下,随耕翻面积的增加,产沙量呈持续上升趋势;坡度为10°时,耕
翻面积对产沙量的影响表现最为明显,翻耕的产沙量平均为不耕翻的8.66倍。15°坡度下径流量对累积产
沙量的影响最显著。不同耕翻面积下的产流率在产流开始后10min左右趋于稳定。在不同坡度下全耕的
产沙率均最大,不耕翻的最小。[结论]随着耕翻面积逐渐增大,初始产流时间逐渐延后,径流量逐渐减小,
产沙量逐渐增大。

其他摘要

[Objective]The aim of this study is to investigate the effects of ploughing area on soil and water
loss,in order to provide basis for soil and water loss in Loess Plateau.[Methods]By artificial rainfall experiments,
we studied runoff and sediment yield characteristics at three different slopes with different ploughing
area.[Results]The runoff and sediment yield characteristics of cultivated land were not only related to the
slope,rainfall intensity and soil moisture content,but also closely related to ploughing area.Under the same
slope gradient,the initial runoff occurring time was delayed and the sediment yield was increased with the
increase of ploughing area.Under the same ploughing area,runoff and sediment yield rate showed an
increasing trend with the increase of slope gradient.And runoff reached to the maximum when the slope was
15°and the ploughing area was 50%.Under the same gradient,the sediment yield showed an increasing
trend with the increase of ploughing area.When the slope gradient was 10°,ploughing area had the greatest
influence on sediment yield,and the average sediment yield of ploughing treatment was 8.66times of no-till
treatment.The runoff had the most significant influence on the cumulative sediment yield when the slope
gradient was 15°.Runoff rate under different ploughing area became stable approximately 10min after the
initial runoff occurring.Under different slope gradient,sediment production rate of full-tillage was the largest
in whole-ploughing,while the smallest in no-till.[Conclusion]With the increasing of ploughing area,
the initial runoff occurring time is delayed,runoff decreased,and the sediment yield increased.

关键词耕翻面积 水土流失 人工降雨
收录类别中文核心期刊要目总览
语种中文
文献类型期刊论文
条目标识符sbir.nwafu.edu.cn/handle/361005/9438
专题水保所知识产出(1956---)
作者单位1.西北农林科技大学资源环境学院
2.西北农林科技大学水土保持研究所
3.宁夏农业综合开发办公室
推荐引用方式
GB/T 7714
李龙,郝明德,王安,等. 人工降雨条件下耕翻面积对水土流失的影响[J]. 水土保持通报,2015,35(5):34-44.
APA 李龙,郝明德,王安,董晓兵,&曹静静.(2015).人工降雨条件下耕翻面积对水土流失的影响.水土保持通报,35(5),34-44.
MLA 李龙,et al."人工降雨条件下耕翻面积对水土流失的影响".水土保持通报 35.5(2015):34-44.
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