| 长藤结瓜灌溉系统回归水重复利用 |
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| 引用本文： | 蔡学良,崔远来,代俊峰,罗玉峰.长藤结瓜灌溉系统回归水重复利用[J].武汉大学学报(工学版),2007,40(2):46-50. |
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| 作者姓名： | 蔡学良 崔远来 代俊峰 罗玉峰 |
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| 作者单位： | 1. 武汉大学水资源与水电工程科学国家重点实验室,湖北,武汉,430072
2. 河海大学水文水资源与水利工程科学国家重点实验室,江苏,南京,210098 |
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| 基金项目： | 国家自然科学基金;高等学校博士学科点专项科研项目;教育部跨世纪优秀人才培养计划 |
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| 摘 要： | 运用遥感手段来获取研究区域内水体以及土地利用信息,以当地中小型蓄水设施为节点,在数字高程模型(DEM)平台上构建回归水重复利用模型,提出以中小型蓄水设施集水区域为基本单元的回归水定量计算方法,并由各相连集水区域的连续水量平衡分析实现尺度的放大.将模型运用于漳河灌区,运用田间观测数据率定其参数.结果表明:合理开发利用中小型蓄水设施能够显著提高灌区水的重复利用率,其值随着尺度的放大而提高.该法适用于长藤结瓜灌溉系统不同尺度,其结果具有一致性.
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| 关 键 词： | 长藤结瓜灌溉系统 重复利用 GIS 回归水 水量平衡 |
| 文章编号： | 1671-8844（2007）02-0046-05 |
| 修稿时间： | 2006-12-07 |
Small storage based return flows estimation in melon-on-the-vine irrigation system |
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| CAI Xueliang,CUI Yuanlai,DAI Junfeng,LUO Yufeng.Small storage based return flows estimation in melon-on-the-vine irrigation system[J].Engineering Journal of Wuhan University,2007,40(2):46-50. |
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| Authors: | CAI Xueliang CUI Yuanlai DAI Junfeng LUO Yufeng |
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| Affiliation: | 1. State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China; 2. State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing 210098 ,China |
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| Abstract: | Water recycling and reuses contribute a lot to irrigation efficiency in melon-on-the-vine irrigation systems.This paper introduces a water recycling and reuses model based on local storages.The model is established through spatial analysis technique based on digital elevation model(DEM),storages and land use information extracted from remotely sensed data to calculate returned water volume including return flows from rainfall and irrigation input.The model is calibrated with field data and applied to Zhanghe Irrigation System.The results show that small storages within melon-on-the-vine irrigation systems actively capture and re-divert return flows;the return flow ratio increase with spatial scale so as to enhance irrigation efficiency to very high value at system level. |
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| Keywords: | GIS |
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