| 河套灌区解放闸灌域盐荒地积盐量分析 |
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| 引用本文： | 李亮,李美艳,王世锋,王长生,李正中.河套灌区解放闸灌域盐荒地积盐量分析[J].排灌机械工程学报,2015,33(5):434-441. |
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| 作者姓名： | 李亮 李美艳 王世锋 王长生 李正中 |
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| 作者单位： | 1.中国水利水电科学研究院牧区水利科学研究所, 内蒙古 呼和浩特 010020; 2.内蒙古自治区水利水电勘测设计院, 内蒙古 呼和浩特 010020; 3.内蒙古河套灌区解放闸灌域沙壕渠试验站, 内蒙古 杭锦后旗 015400 |
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| 摘 要： | 以解放闸灌域为背景对盐荒地水分和盐分的变化展开研究.在田间试验的基础上,通过遥感技术对TM数据解译统计盐荒地面积,利用HYDRUS-1D模型对盐荒地土壤盐分的积聚量与流失量进行了模拟和分析.结果表明,盐分在表层土壤中积聚,解放闸灌域总面积为2 156.47 km2,盐荒地达到了总面积的16.32%.灌域盐荒地1 m深土壤层中,在作物生育期积聚盐量为10.32×106 kg,在秋浇期流失盐量为9.60×106 kg,占积盐量的93.01%;年度积盐量为0.72×106 kg,占积盐量的6.99%.经检验,HYDRUS-1D模型对土壤水分和盐分在垂直方向运移的模拟具有较高精度,反映出盐分积聚和流失规律.盐荒地盐分的积聚与流失对灌区盐分具有重要调节作用,可为灌区水盐运移的研究提供科学依据.
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| 关 键 词： | 解放闸灌域 HYDRUS-1D模型 盐荒地 TM数据 积盐量 |
| 收稿时间： | 2014-10-28 |
Analysis of salt accumulation in wasteland of Jiefangzha irrigation field in Hetao Irrigation District |
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| Li Liang,Li Meiyan,Wang Shifeng,Wang Changsheng,Li Zhengzhong.Analysis of salt accumulation in wasteland of Jiefangzha irrigation field in Hetao Irrigation District[J].Journal of Drainage and Irrigation Machinery Engineering,2015,33(5):434-441. |
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| Authors: | Li Liang Li Meiyan Wang Shifeng Wang Changsheng Li Zhengzhong |
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| Institution: | 1.Institute of Water Resources for Pastoral Area, China Institute of Water Resources and Hydropower Research, Huhhot, Inner Mongolia 010020, China; 2.Inner Mongolia Autonomous Region Water Resource and Hydropower Survey Design Institute, Huhhot, Inner Mongolia 010020, China; 3.Shahaoqu Experimental Station of Hetao Irrigation District, Inner Mongolia, Hangjinhouqi, Inner Mongolia 015400, China |
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| Abstract: | Jiefangzha irrigation field in Hetao Irrigation District is taken as the background, the changes in water and salt in the salt wasteland of the field are studied. Based on field experiments, the salt wasteland area is summarized through interpreting TM data acquired by remote sensing technology, then salt accumulation and loss in the soil of the wasteland are simulated and analyzed by using HYDRUS-1D model. The results show that the salt wasteland has covered 16.32% of the 2 156.47 km2 total area of the field and salt is mainly accumulated in the soil surface layer. The salt accumulation in the salt wasteland is 10.32?106 kg in the 1m deep soil layer during the whole growth period of crop. The loss of salt in autumn irrigation is 9.60?106 kg, which accounts for 93.01% of the total salt accumulation. The annual salt accumulation is 0.72?106 kg, 6.99% of the total salt accumulation. Upon inspection, the HYDRUS-1D model can simulate the vertical migration of soil water and salt with high accuracy, representing the law of salt accumulation and loss. The accumulation and loss of salt in wasteland plays an important regulating role in salt in the soil of irrigation field. The results can provide a scientific basis for study on water and salt migration in an irrigation field. |
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| Keywords: | Jiefangzha irrigation field HYDRUS-1D model salt wasteland TM data salt accumulation |
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