| Jag S对黄土坡面降雨入渗的调控效应 |
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| 引用本文： | 李元元,王占礼,申楠,焦念,刘俊娥.Jag S对黄土坡面降雨入渗的调控效应[J].水土保持通报,2015,35(6):135-139. |
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| 作者姓名： | 李元元 王占礼 申楠 焦念 刘俊娥 |
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| 作者单位： | 西北农林科技大学 水土保持研究所, 陕西 杨凌 712100;西北农林科技大学 黄土高原土壤侵蚀 与旱地农业国家重点实验室, 陕西 杨凌 712100;西北农林科技大学 黄土高原土壤侵蚀 与旱地农业国家重点实验室, 陕西 杨凌 712100;中国科学院 水利部 水土保持研究所, 陕西 杨凌 712100;西北农林科技大学 水土保持研究所, 陕西 杨凌 712100;西北农林科技大学 黄土高原土壤侵蚀 与旱地农业国家重点实验室, 陕西 杨凌 712100;黄河水利委员会 西峰水土保持科学试验站, 甘肃 西峰 745000;陕西师范大学 旅游与环境学院, 陕西 西安 710019 |
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| 基金项目： | 国家自然科学基金项目"应用三区土盘试验解析黄土坡面片蚀动力学过程"(41471230),"黄土坡面细沟侵蚀关键参数及其耦合关系试验研究"(41171227);中国科学院重点项目(KZZDEW0403) |
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| 摘 要： | 目的]Jag S是一种新型可用于调控水土流失的高分子化学材料,揭示Jag S对降雨入渗的化学调控效应,为黄土坡面水土流失治理提供科学依据。方法]采用人工模拟降雨试验研究Jag S对黄土坡面入渗调控效应。结果](1)撒施Jag S坡面入渗率随降雨过程的变化趋势与裸坡相似,起初皆随降雨历时的延长先快速减小,随后趋于稳定状态;(2)撒施Jag S的坡面和裸坡相比,初始产流的时间提前,入渗率减小速率较大,达到稳渗阶段所用的时间少,且前期入渗率小于裸坡坡面前期入渗率,但稳渗率大于裸坡;(3)撒施Jag S坡面的入渗量明显高于裸坡的入渗量,在各个剂量下,入渗量均随坡度的增加而减小,随雨强的增加而呈现递增变化趋势。结论]因此撒施Jag S可有效增加土壤入渗和强化入渗效应。强化入渗效应的Jag S剂量顺序依次为:1g/m23g/m25g/m2。
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| 关 键 词： | Jag S 黄土坡面 降雨入渗 调控效应 |
| 收稿时间： | 2014/9/10 0:00:00 |
| 修稿时间： | 2014/9/26 0:00:00 |
Regulating Effect of Jag S Application on Rainfall Infiltration of Loess Slope |
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| LI Yuanyuan,WANG Zhanli,SHEN Nan,JIAO Nian and LIU June.Regulating Effect of Jag S Application on Rainfall Infiltration of Loess Slope[J].Bulletin of Soil and Water Conservation,2015,35(6):135-139. |
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| Authors: | LI Yuanyuan WANG Zhanli SHEN Nan JIAO Nian and LIU June |
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| Institution: | Institute of Soil and Water Conservation, Northwest A & F University, Yangling, Shaanxi 712100, China;State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A & F University, Yangling, Shaanxi 712100, China;State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A & F University, Yangling, Shaanxi 712100, China;State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, China;Institute of Soil and Water Conservation, Northwest A & F University, Yangling, Shaanxi 712100, China;State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A & F University, Yangling, Shaanxi 712100, China;Xifeng of Soil and Water Conservation Scientific Experiment Station of Yellow River Water Conservancy Commission, Xifeng, Gansu 745000, China;College of Tourism Environment Science, Shaanxi Normal University, Xi'an, Shaanxi 710019, China |
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| Abstract: | Objective] Jag S is a kind of new macromolecule polymers which can regulate water and soil loss. Studying Jag's chemical regulation effect on the rainfall infiltration can provide the scientific basis for the control of soil and water loss on loess slope.Methods] A simulated rainfall experiment was conducted to study the regulating effect of Jag S on infiltration of loess slope.Results] (1) Variation trend of the infiltration rate of the slope with the spreading of Jag S was similar to bare soil. It rapidly decreased at first and then stabilized with the increase of the rainfall duration.(2) Compared to the bare soil, the soil with spreading Jag S had greater reduction of infiltration rate, less initial runoff time and less time for the infiltration rate to be stable, and the infiltration rate in the soil with dry spreading Jag S was lower than bare soil, but its stable infiltration rate was higher than bare soil.(3) Infiltration amount of the soil with spreading Jag S was significantly higher than bare soil. With different doses, the infiltration capacity decreased with slope increase, and increased with the increasing rainfall intensity.Conclusion] The dry spreading Jag S increased the infiltration capacity, the regulating effect of different doses was 1 g/m2 >3 g/m2 >5 g/m2. |
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| Keywords: | Jag S loess slope rainfall infiltration regulating effect |
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