| 风沙区灌溉与非灌溉紫花苜蓿地土壤水分时空变化分析 |
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| 引用本文： | 陈林,张庆霞,宋乃平,谢应忠.风沙区灌溉与非灌溉紫花苜蓿地土壤水分时空变化分析[J].干旱区资源与环境,2010(1). |
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| 作者姓名： | 陈林 张庆霞 宋乃平 谢应忠 |
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| 作者单位： | 宁夏大学西北退化生态系统恢复与重建省部共建教育部重点实验室;西部生态与生物资源开发联合研究中心;宁夏大学资源与环境学院; |
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| 基金项目： | 宁夏中部干旱带退化土地恢复整治工程:盐池县马儿庄人工草地建置试验研究与监测跟踪资助 |
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| 摘 要： | 水分是干旱、半干旱地区植被建设中最重要的生态因子,而在西部干旱地区农业灌溉中,存在水资源有效利用率低、浪费严重的问题。对比分析了风沙区有、无灌溉情况下的土壤水分,结果表明:灌溉地和非灌溉地剖面内土壤水分变异系数随着土层深度的增加均呈现出降低的趋势。灌溉只对0-60 cm土壤水分有影响。4-10月灌溉和非灌溉紫花苜蓿地0-20 cm层土壤含水量呈多"W"型,20-60 cm层土壤含水量大致呈"V"型,60-100 cm层土壤含水量为平稳型,0-1m土层储水量的变化呈"V"型。土壤水分季节动态变化可划分为3个时期:土壤水分消耗期(5-6月);土壤水分积累期(7-9月);土壤水分稳定期(10月至次年4月)。灌溉制度还有待进一步研究。
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| 关 键 词： | 风沙区 土壤水分 时空变化 |
Analysis of spatial-temporal changes of the soil moisture in irrigated and dry lands in wind-sandy area |
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| CHEN Lin,ZHANG Qingxia,SONG Naiping,XIE Yingzhong.Analysis of spatial-temporal changes of the soil moisture in irrigated and dry lands in wind-sandy area[J].Journal of Arid Land Resources and Environment,2010(1). |
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| Authors: | CHEN Lin ZHANG Qingxia SONG Naiping XIE Yingzhong |
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| Institution: | 1.Key Laboratory for Restoration and Reconstruction of Degraded Ecosystem in Northwestern China of Ministry of Education;Ningxia University;Yinchuan 750021;P.R.China;2.United Research Center for Exploitation of Ecology and Biological Resources in Western China;3.School of Resource and Environment;P.R.China |
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| Abstract: | Water is the most important ecological factor under vegetation construction in arid and semi-arid areas,but there is a serious problems of low efficiency of water utilization and serious waste of water resources in agricultural irrigation in the western arid areas.In this paper,we analyzed the soil moistures of irrigated land and dry land.The results showed that there was a decreasing trends of coefficients of variation in irrigated land and non-irrigated land with the increase in the depth of the soil.It o... |
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| Keywords: | wind-sandy area soil moisture spatial-temporal changes |
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