Study on distribution and use of rainfall of interval coverage on Lou soil slope land

2011 International Symposium on Water Resource and Environmental Protection Pub Date : 2011-05-20 DOI:10.1109/ISWREP.2011.5893037

Hao Chun-hong, C. Xi, Tan Yanqing, Pan Ying-hua

{"title":"Study on distribution and use of rainfall of interval coverage on Lou soil slope land","authors":"Hao Chun-hong, C. Xi, Tan Yanqing, Pan Ying-hua","doi":"10.1109/ISWREP.2011.5893037","DOIUrl":null,"url":null,"abstract":"Using indoor artificial simulated rainfall, rainfall use efficiency, wetting front shape and soil moisture content were analyzed to investigate water distribution and rainwater use of interval coverage on Lou soil slope land. The results showed that with area ratio increased, under same rainfall intensity and slope, rainfall use efficiency decreased, and the maximum rainfall use efficiency of uncoveraged treatment was 58.93%. There was no significant difference in wetting front shape and the maximum depth of each treatment, and the maximum depth was 17cm, which located at the conjunction point of coverage area and infiltration area, which all were higher than that of CK. Soil profile moisture distribution of each treatment accorded to general rule, which gradually decreased from surface to deeper layer. Water content at the conjunction point was slightly higher than other points. Average soil moisture content in infiltration area decreased with area ratio increased, but they were all higher than that of CK. The results also showed that coverage measures could increase actual acceptable rainfall and soil water storage of infiltration area. But how to determine appropriate area ratio to improve rainwater use efficiency under different experimental conditions still need to be further investigated.","PeriodicalId":6425,"journal":{"name":"2011 International Symposium on Water Resource and Environmental Protection","volume":"40 1","pages":"434-437"},"PeriodicalIF":0.0000,"publicationDate":"2011-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2011 International Symposium on Water Resource and Environmental Protection","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ISWREP.2011.5893037","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 0

Abstract

Using indoor artificial simulated rainfall, rainfall use efficiency, wetting front shape and soil moisture content were analyzed to investigate water distribution and rainwater use of interval coverage on Lou soil slope land. The results showed that with area ratio increased, under same rainfall intensity and slope, rainfall use efficiency decreased, and the maximum rainfall use efficiency of uncoveraged treatment was 58.93%. There was no significant difference in wetting front shape and the maximum depth of each treatment, and the maximum depth was 17cm, which located at the conjunction point of coverage area and infiltration area, which all were higher than that of CK. Soil profile moisture distribution of each treatment accorded to general rule, which gradually decreased from surface to deeper layer. Water content at the conjunction point was slightly higher than other points. Average soil moisture content in infiltration area decreased with area ratio increased, but they were all higher than that of CK. The results also showed that coverage measures could increase actual acceptable rainfall and soil water storage of infiltration area. But how to determine appropriate area ratio to improve rainwater use efficiency under different experimental conditions still need to be further investigated.

查看原文本刊更多论文

低土坡地间隔覆盖降雨分布与利用研究

采用室内人工模拟降雨的方法，分析降雨利用效率、湿锋形态和土壤含水率，探讨了低土坡地间隔覆盖的水分分布和雨水利用。结果表明:在降雨强度和坡度相同的情况下，随着面积比的增大，降雨利用效率降低，未覆盖处理的最大降雨利用效率为58.93%;各处理湿润锋形状和最大深度无显著差异，最大深度为17cm，位于覆盖区和入渗区交汇点，均高于对照。各处理土壤剖面水分分布符合一般规律，由表层向深层逐渐减少。结合点的含水量略高于其他点。入渗区土壤平均含水量随面积比的增加而降低，但均高于对照。覆盖措施可以增加入渗区实际可接受降雨量和土壤储水量。但在不同的实验条件下，如何确定合适的面积比来提高雨水利用效率还有待进一步研究。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

2011 International Symposium on Water Resource and Environmental Protection

自引率

0.00%

发文量