Impacts of Rainfall Intensity, Slope Gradient on Overland Flow of Purple Soil Under Simulated Rainfall

doi:10.13961/j.cnki.stbctb.2016.04.030

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Impacts of Rainfall Intensity, Slope Gradient on Overland Flow of Purple Soil Under Simulated Rainfall

- Impacts of Rainfall Intensity, Slope Gradient on Overland Flow of Purple Soil Under Simulated Rainfall
- Bulletin of Soiland Water Conservation Vol. 36, Issue 4, Pages: 164-168(2016)
- 作者机构：
  
  四川农业大学林学院,四川,成都,611130
- 作者简介：
- 基金信息：
- DOI：10.13961/j.cnki.stbctb.2016.04.030
  CLC：
- Published：2016
- 稿件说明：
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Impacts of Rainfall Intensity, Slope Gradient on Overland Flow of Purple Soil Under Simulated Rainfall[J]. Bulletin of Soiland Water Conservation, 2016, 36(4): 164-168.
DOI：

Impacts of Rainfall Intensity, Slope Gradient on Overland Flow of Purple Soil Under Simulated Rainfall[J]. Bulletin of Soiland Water Conservation, 2016, 36(4): 164-168. DOI： 10.13961/j.cnki.stbctb.2016.04.030.

摘要

[目的] 研究不同降雨强度和坡度对紫色土坡面产流过程的影响，为紫色土区域的水土流失防治提供科学依据。[方法] 基于室内人工模拟降雨试验开展研究。[结果] 不同雨强和坡度下的产流过程可大致分为“下凹”型和“上凸”型，且分别可以用指数函数和对数函数描述。随着雨强和坡度的增大，产流时间逐渐减小，产流过程逐渐趋于一致，坡面径流量逐渐增加。坡度和雨强对径流总量的贡献率有着对比消长的关系，小雨强下（雨强为33和54 mm/h），坡度是坡面径流总量的主要贡献因子，随着雨强增大（雨强为94和125 mm/h），雨强为坡面径流总量的主要贡献因子。[结论] 坡度和雨强均为坡面侵蚀的主要影响因子，随着坡度和雨强的增加，坡面侵蚀更加剧烈，主要侵蚀因子也由坡度转变为雨强。

Abstract

[Objective] The effects of rainfall intensity and slope gradient on runoff process were studied to provide scientific basis for soil and water conservation control on purple soil areas. [Methods] Researches were studied based on indoor artificial rainfall simulation experiments. [Results] Runoff courses could be generally divided into concave and convex type

and can be described by exponential function and log function

respectively. With the increases of rainfall intensity and slope

the runoff initiation time decreased

the runoff amount increased

and the runoff course became similar. At low rainfall intensity

the effect of slope gradient was obvious in runoff generation

while at high intensity

the effect decreased. In this case

slope gradient was the main factor at low rainfall intensities(33

54 mm/h)

while rainfall intensity became the main factor at high rainfall intensity(94

125 mm/h). [Conclusion] Both rainfall intensity and slope gradients were the main factors of hillslope erosion. With the increase in rainfall intensity

the hillslope erosion became more sharply. And the main erosion factor transferred from slope to rainfall intensity.

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references

李世锋,朱晓莹,朱春波.浙江省华光潭梯级水电站水土保持监测实践[J].中国水土保持,2008(9):48-50.

刘力,郑粉莉.紫色土土壤侵蚀研究进展[J].安徽农业科学,2006,34(12):2804-2805.

钟壬琳,张平仓.紫色土坡面产流产沙模拟试验研究[J].浙江水利科技,2011(2):6-9.

王政.侵蚀产沙的影响因素研究[J].中国科技信息,2008(6):27-29.

张海涛.人工模拟降雨条件下紫色土可溶性C,N流失特征[D].四川成都:四川农业大学,2013.

中国科学院成都分院土壤研究室.中国紫色土(上篇)[M].北京:北京科学出版社,1994.

高美荣,刘刚才,朱波.四川紫色土丘陵区不同耕作制的产流过程初步分析[J].水土保持学报,2000,14(5):118-121.

Liu Gangcai, Tian Guanglong, Shu Dongcai, et al. Characteristics of surface runoff and through flow in a purple soil of Southwestern China under various rainfall events [J]. Hydrological Processes, 2005, 19(9): 1883-1891.

王玉宽,王勇强,傅斌,等.紫色土坡面降雨侵蚀试验研究[J].山地学报,2006,24(5):597-600.

孙向阳.土壤学[M].北京:中国林业出版社,2004.

吴发启,赵西宁,佘雕.坡耕地土壤水分入渗影响因素分析[J].水土保持通报,2003,23(1):16-18.

靳长兴.坡度在坡面侵蚀中的作用[J].地理研究,1996,18(3):57-63.

陈洪松,邵明安,张兴昌,等.野外模拟降雨条件下坡面降雨入渗、产流试验研究[J].水土保持学报,2005,19(2):5-8.

吴发启,贾锐鱼.地表糙度的量测方法及对坡面径流和侵蚀的影响[J].西北林学院学报,1998,13(2):15-19.

吴伟,王雄宾,武会,等.坡面产流机制研究刍议[J].水土保持研究,2006,13(4):84-86.

张会茹,郑粉莉,耿晓东.地面坡度对红壤坡面土壤侵蚀过程的影响研究[J].水土保持研究,2009,16(4):52-54.

刘贤兆,康绍忠.降雨入渗和产流问题研究的若干进展及评述[J].水土保持通报,1999,19(2):57-62.

Catherine B, Marcel S, Dirk R Z, et al. Rill development and soil erosion: A laboratory study of slope and rainfall intensity [J]. Earth Surface Processes and Landforms, 2010,35(12):1456-1467.

鲁克新,李占斌,张霞,等.室内模拟降雨条件下径流侵蚀产沙试验研究[J].水土保持学报,2011,25(2):6-9.

耿晓东,郑粉莉,刘力.降雨强度和坡度双因子对紫色土坡面侵蚀产沙的影响[J].泥沙研究,2010(6):48-53.

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