PDF Download

[1]QIN Chuan,HE Bing-hui,WANG Liang,et al.Effect of the Soil Antecedent Water Content on Soil Solutes Loss on Slope of Purple Soil Region[J].Research of Soil and Water Conservation,2013,20(01):19-24.

Copy

Effect of the Soil Antecedent Water Content on Soil Solutes Loss on Slope of Purple Soil Region

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 20 Number of periods: 2013 01 Page number: 19-24 Column: Public date: 2013-02-28

Title:: Effect of the Soil Antecedent Water Content on Soil Solutes Loss on Slope of Purple Soil Region

Author(s):: QIN Chuan¹, HE Bing-hui¹, WANG Liang¹, LIU Yong-xin²; 1. Key Laboratory of the Three Gorges Reservoir Region’s Eco-environment of Ministry of Education, Institute of Resources and Environment, Southwest University, Chongqing 400715, China;
2. The 10 th middle school of Longquanyi District, Chengdu 610108, China

Keywords:: purple soil; soil antecedent water content; soil erosion; nutrient loss

CLC:: S152.7

DOI:: -

Abstract:: Soil antecedent water content affects soil and water loss in purple soil area to some extent. According to the results of lab simulation rainfall experiments, the process and mechanism of rainfall infiltration, runoff process, release-transport and change of runoff and solutes less than four soil antecedent water content 5%, 10%, 15% and 20% were studied on purple soil region. The results showed that runoff intensity presents a logarithmic function with rainfall time changing, runoff intensity trended to be steady about 25 minutes later when rain occurred. The change of accumulated output runoff presented a linearity relationship with soil antecedent water content in unit time. The soil surface runoff and an average depth increase with the rise of initial the moisture contents, and the average infiltration rates on slope changes in the reverse trend. The concentrations of PO₄^3-, K⁺, Br^- of runoff presented the same law, at the beginning of runoff yields, the runoff concentration was very high, and then it got down quickly, finally, it trended to be steady. The soil solute losses was gaining with the increase of soil antecedent water contents, the process that the solutes transport from soil to runoff increased quickly to a peak value from a very small concentration, then gradually decayed to a stable content. Exponential function model was more siutable to describe the process of runoff solutes release, transport and change on purple soil hilly region compared with power function model.

References:: [1] 傅斌,王玉宽,朱波,等.紫色土坡耕地降雨入渗试验研究[J].农业工程学报,2008,24(7):39-41.
[2] 李瑞,李勇,刘云芳,等.贵州喀斯特地区降雨与坡面土壤侵蚀关系研究[J].水土保持研究,2012,19(9):7-9.
[3] 杨文志,邵明安.黄土高原土壤水分研究[M].北京:北京科学出版社,2000.
[4] 陈洪松,邵明安.黄土区坡地土壤水分运动与转化机理研究进展[J].水科学进展,2003,14(4):513-520.
[5] 孔刚,王全九,樊军,等.前期含水量对坡面降雨产流和土壤化学物质流失影响研究[J].土壤通报,2008,12(6):1395-1397.
[6] 周佩华,张学栋,唐克丽.黄土高原土壤侵蚀与旱地农业国家重点实验室土壤侵蚀模拟实验大厅降雨装置[J].水土保持通报,2000,20(4):27-30.
[7] 袁建平,将定生,甘淑,等.影响坡地降雨产流历时的因子分析[J].山地学报,1999,17(3):259-264.
[8] 贾莲莲,李占斌,李鹏,等.黄土区野外模拟降雨条件下坡面径流-产沙试验研究[J].水土保持研究,2010,17(1):1-4.
[9] 满秀玲,范金凤,谭晓京,等.森林和沼泽对溪流水化学特征的影响[J].应用生态学报,2006,17(6):992-996.
[10] Philip J R. Hillslope infiltration:planar slopes[J].Water Resources,1991,27(1):109-117.
[11] 安晓奇,郭成久,苏芳莉,等.土壤前期含水量对弃渣坡面侵蚀特性影响的模拟试验[J].水土保持研究,2009,16(6):117-118.
[12] 王全九,穆天亮,王辉,等.土壤溶质随径流迁移基本特征分析[J].水土保持研究,2008,15(6):38-41.
[13] 孔刚,王全九,樊军,等.坡度对黄土坡面养分流失的影响实验研究[J].水土保持学报,2007,21(3):14-18.
[14] 傅涛.三峡库区坡面水土流失机理及预测评价建模[D].重庆:西南大学,2002.
[15] 张亚丽,李怀恩,张兴昌,等.水蚀条件下土壤初始含水量对黄土坡地溶质迁移的影响[J].水土保持学报,2007,21(4):1-6.
[16] 王全九,王文焰,沈冰,等.降雨-地表径流-土壤溶质相互作用深度[J].水土保持学报,1998,12(2):41-46.
[17] Ahuja L R, Sharpley A N, Yamamoto M, et al. The depth of rainfall-runoff-soil interaction a determining by ³²P[J].Water Resources Research,1981,17(4):969-974.
[18] Abuja L R, Lehman O R. The extent and nature of rainfall-soil interaction in the release of soluble chemicals to runoff[J]. J. Environ. Qual.,1983,12(1):34-40.
[19] Ahuja L R. Release of soluble chemical from soil to runoff[J]. Trans. Am. Soc. Agricu. Eng.,1982,25(4):948-953,960.

Similar References:

Memo

Last Update: 1900-01-01