灌溉水利用效率随尺度变化规律分布式模拟

谢先红; 崔远来

灌溉水利用效率随尺度变化规律分布式模拟

谢先红¹,
崔远来²

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.
北京大学工学院能源与资源工程系, 北京, 100871

基金项目: 国家自然科学基金资助项目(50879060;50839002)

详细信息

作者简介:
谢先红(1980- ),男,湖北阳新人,博士后,主要从事农田水利与水文水资源方面研究.E-mail:xxhong1122@yahoo.com.cn

中图分类号: S275;TV12

Distributed hydrological modeling of irrigation water use efficiency at different spatial scales

XIE Xian-hong¹,
CUI Yuan-lai²

1.
State key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China;
2.
Department of Energy and Resources Engineering, College of Engineering, Peking University, Beijing 100871, China

Funds: The study is financially supported by the National Natural Science Foundation of China(No.50879060;No.50839002).

摘要: 为评价农田灌溉水利用状况并揭示灌溉水利用效率的尺度变化规律,应用改进的分布式水文模型(SWAT)模拟了漳河灌区三干渠灌域的水循环过程和作物产量。以子流域嵌套方式将研究区划分为9个尺度来计算灌溉水利用效率指标,并分析其随尺度变化的特征及原因。结果表明,灌溉水分生产率受降雨、气候条件的时空分布特征影响较大,而且随尺度增大明显,其尺度关系可以近似应用幂函数描述,函数的形式和参数与分形思想接近。排水率在中等尺度上的数值最大,但随尺度变化不显著。因此,在一定精度条件下,灌溉水分生产率的尺度转换模式可以尝试应用幂函数形式。漳河灌区在中等尺度上的节水潜力最大。
- 分布式水文模型 /
- 灌溉水利用效率 /
- 水分生产率 /
- 排水率 /
- 尺度 /
- 节水潜力
Abstract: To better assess water use status in irrigated agriculture and understand irrigation water use efficiency (WIUE) at different spatial scales,an improved distributed hydrological model,soil and water assessment tool (SWAT),is used to smiulate hydrological processes and the cropy ields in the irrigation region of the third main canal in Zhanghe irrigation district.The nine nesting scales is adopted to calculate the WIUE and to result in five IWUE indexes.The variation of five assessment indexes w ith the nine nesting scales is analyzed.Results show that one of theindexes,the irrigation water productivity,is greatly influenced by the spatial temporal distribution of precipitation as well as other weather conditions in the irrigation region.Its values increase with nesting scales.This scale character can be approximately represented by a power function that is smilar to the fractal principle.Another important index,the water drainage ratio,achieves the maximum value at the intermedium nesting scale.However,the scale character of the water drainage ratio is insignificant as this index is quasi-stationary across all nesting scales.Therefore,the power function can be used to scale up/down the irrigation water productivity.The greatest potential for water saving practice in this irrigation region is achievable at the intermedium nesting scale.
- distributed hydrological model /
- irrigation water use eficiency /
- water productivity /
- drainage ratio /
- scaling /
- potential of water saving irrigation

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灌溉水利用效率随尺度变化规律分布式模拟

作者简介:
谢先红(1980- ),男,湖北阳新人,博士后,主要从事农田水利与水文水资源方面研究.E-mail:xxhong1122@yahoo.com.cn

Distributed hydrological modeling of irrigation water use efficiency at different spatial scales

计量

灌溉水利用效率随尺度变化规律分布式模拟

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. 北京大学工学院能源与资源工程系, 北京, 100871

作者简介:
谢先红(1980- ),男,湖北阳新人,博士后,主要从事农田水利与水文水资源方面研究.E-mail:xxhong1122@yahoo.com.cn

English Abstract

Distributed hydrological modeling of irrigation water use efficiency at different spatial scales

1. State key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China;

2. Department of Energy and Resources Engineering, College of Engineering, Peking University, Beijing 100871, China

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目录

留言板

灌溉水利用效率随尺度变化规律分布式模拟

作者简介: 谢先红(1980- ),男,湖北阳新人,博士后,主要从事农田水利与水文水资源方面研究.E-mail:xxhong1122@yahoo.com.cn

Distributed hydrological modeling of irrigation water use efficiency at different spatial scales

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出版历程

灌溉水利用效率随尺度变化规律分布式模拟

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. 北京大学工学院能源与资源工程系, 北京, 100871

作者简介: 谢先红(1980- ),男,湖北阳新人,博士后,主要从事农田水利与水文水资源方面研究.E-mail:xxhong1122@yahoo.com.cn

English Abstract

Distributed hydrological modeling of irrigation water use efficiency at different spatial scales

1. State key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China; 2. Department of Energy and Resources Engineering, College of Engineering, Peking University, Beijing 100871, China

全文HTML

目录

作者简介:
谢先红(1980- ),男,湖北阳新人,博士后,主要从事农田水利与水文水资源方面研究.E-mail:xxhong1122@yahoo.com.cn

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. 北京大学工学院能源与资源工程系, 北京, 100871

作者简介:
谢先红(1980- ),男,湖北阳新人,博士后,主要从事农田水利与水文水资源方面研究.E-mail:xxhong1122@yahoo.com.cn

1. State key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China;

2. Department of Energy and Resources Engineering, College of Engineering, Peking University, Beijing 100871, China