| 基于遥感ET数据的区域水资源状况及典型农作物耗水分析 |
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| 引用本文： | 彭致功,刘钰,许迪,王蕾.基于遥感ET数据的区域水资源状况及典型农作物耗水分析[J].灌溉排水学报,2008,27(6):6-9. |
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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,中国水利水电科学研究院水利研究所,北京100044 |
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| 基金项目： | 国家重点基础研究发展计划(973计划)
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引进国际先进农业科学技术计划(948计划)
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中国博士后科学基金
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| 摘 要： | 以遥感ET及实测降水数据为基础,借助GIS技术开展水分盈亏分析研究;同时依据项目区土地利用现状,选择冬小麦、夏玉米、棉花及人工草坪为重点分析对象,对其耗水及灌溉耗水规律进行研究。结果表明:①大兴区耗水量与降水量在总量上不平衡,时空上不匹配,在现状土地利用下若无外来水补充,则不得不超采地下水,资源型缺水突出。②冬小麦和夏玉米耗水年际变化不大,而棉花及人工草坪随降水增加耗水增大;分析作物耗水与降水的吻合性发现,冬小麦耗水与降水匹配性最差,其次为人工草坪,而夏玉米及棉花耗水与降水匹配较好。③在所选择的4种作物中小麦灌溉耗水量最大,达230 mm以上;其次为人工草坪,其灌溉耗水量超过189 mm;夏玉米及棉花灌溉耗水量较小。
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| 关 键 词： | 遥感ET GIS技术 水分盈亏 作物耗水 作物灌溉耗水量 |
Analysis of Regional Water Resources and Crops Water Consumption Based on Remote Sensing ET Data |
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| PENG Zhi-gong,LIU Yu,XU Di,WANG Lei.Analysis of Regional Water Resources and Crops Water Consumption Based on Remote Sensing ET Data[J].Journal of Irrigation and Drainage,2008,27(6):6-9. |
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| Authors: | PENG Zhi-gong LIU Yu XU Di WANG Lei |
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| Institution: | PENG Zhi-gong,LIU Yu,XU Di,WANG Lei(China Institute of Water Resources , Hydropower Research,Beijing 100044,China) |
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| Abstract: | Water budget was studied with GIS technique based on the data of remote sensing ET and monitoring precipitation.At the same time,based on present land use in Daxing district four crops such as winter wheat,summer maize,cotton and lawn were selected as key crops for studying crop water consumptions and irrigation water consumptions.The results show that the total volume is seriously uneven between water consumptions and precipitation in Daxing district.The spatial-temporal distribution is un-matched between ... |
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| Keywords: | remote sensing ET GIS technique water budget crop water consumption crop irrigation water consumptions |
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