An Estimation of Irrigation Water Requirement Using Crop Calendar Specified Through Phenological Analysis of NDVI

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Other Title
  • 衛星データ解析による農事暦を活用した灌漑必要水量の推定

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Abstract

This paper shows an estimation of irrigation water requirement using crop calendar specified through phonological analysis of NDVI. As human activities such as irrigation on cropland, water withdrawal from the river and flood control by reservoirs have been expanding to the world, inclusion of those activities is crucial for comprehensive understandings of hydrological process on the land. We estimate irrigation water requirement with a hydrological land surface model. Cropping calendar for 6 crops is specified through phonological analysis of NDVI. Statistical data of cropping type and irrigated land are merged into a global map of irrigated areas to produce irrigation land cover fraction for each crop. Estimated yearly irrigation water requirement correspond to statistical data in many countries, suggesting that irrigation water requirement is analyzed well with our model and cropping calendar. Yearly irrigation water requirement will increase in future, especially in China, India and Middle Asia. Climate change will pose challenges in fresh water management in these regions.

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Details 詳細情報について

  • CRID
    1050845760653745920
  • NII Book ID
    AN00027784
  • ISSN
    0386412X
  • HANDLE
    2433/151028
  • Text Lang
    ja
  • Article Type
    departmental bulletin paper
  • Data Source
    • IRDB

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