| 基于RS数据和GIS方法估算区域作物节水潜力 |
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| 引用本文： | 彭致功,刘 钰,许 迪,王 蕾.基于RS数据和GIS方法估算区域作物节水潜力[J].农业工程学报,2009,25(7):8-12. |
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| 作者姓名： | 彭致功 刘 钰 许 迪 王 蕾 |
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| 作者单位： | 国家节水灌溉工程技术研究中心(北京);中国水利水电科学研究院水利研究所,北京,100048 |
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| 基金项目： | 国家“973”计划（2006CB403405）；GEF海河项目（2006-bj1-4）；中国博士后基金（2007041091） |
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| 摘 要： | 利用遥感ET数据开展用水定额管理及节水潜力分析等方面的研究，是对传统农业节水研究的有益补充。该文利用分类均值法构建了基于遥感ET数据的作物水分生产函数，考虑耗水较低兼顾水分生产率较高的原则，提出基于水资源脆弱区作物ET定额估算模型，利用该模型计算获得冬小麦及夏玉米的ET定额分别为346.00、313.00 mm；保持现有土地利用结构不变，以作物ET定额为评价标准，通过对超过该作物ET定额的像元进行调整，获得大兴区夏玉米及冬小麦的节水潜力分别为1 176.75、369.27万m3。该研究为利用遥感ET数据开展区域耗水节水潜力的定量化评价进行了有益的探索。
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| 关 键 词： | 遥感，作物，产量，腾发量，水分生产率，节水潜力 |
| 收稿时间： | 2009/1/12 0:00:00 |
| 修稿时间： | 2009/6/18 0:00:00 |
Application of RS and GIS technique for water-saving potential estimation of regional crops |
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| Peng Zhigong,Liu Yu,Xu Di and Wang Lei.Application of RS and GIS technique for water-saving potential estimation of regional crops[J].Transactions of the Chinese Society of Agricultural Engineering,2009,25(7):8-12. |
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| Authors: | Peng Zhigong Liu Yu Xu Di and Wang Lei |
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| Institution: | National Center for Efficient Irrigation Engineering and Technology Research (Beijing); Department of Irrigation and Drainage, China Institute of Water Resources and Hydropower Research, Beijing 100048, Chin,National Center for Efficient Irrigation Engineering and Technology Research (Beijing); Department of Irrigation and Drainage, China Institute of Water Resources and Hydropower Research, Beijing 100048, Chin,National Center for Efficient Irrigation Engineering and Technology Research (Beijing); Department of Irrigation and Drainage, China Institute of Water Resources and Hydropower Research, Beijing 100048, Chin and National Center for Efficient Irrigation Engineering and Technology Research (Beijing); Department of Irrigation and Drainage, China Institute of Water Resources and Hydropower Research, Beijing 100048, Chin |
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| Abstract: | Agricultural water-saving studies based on remote sensing evapotranspiration (RS ET) data are beneficial supplements to traditional agricultural water-saving studies. Crop water production function based on remote sensing ET data was built with classification mean value method. As far as lower crop water consumption and higher water productivity were concerned, crop ET quota model for water resource vulnerability region was put forward. The ET quotas of winter wheat and summer maize were calculated as 346 and 313 mm, respectively, by using the ET quota model. Based on the structure of current land use, water-saving potential under ET quota management was determined by adjusting the values of pixel based on the selected ET quotas of crops as evaluation criteria. The water-saving potentialities of summer maize and winter wheat in Daxing District were 176.75 and 369.27 ten thousand m3. The research provides a beneficial exploration on quantitative evaluation of regional water-saving and water consumption potentialities by using remote sensing evapotranspiration data. |
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| Keywords: | remote sensing crops production evapotranspiration water productivity water-saving potential |
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