A new method for simulating key hydrological processes in paddy fields at regional/watershed-scale
编号:4139 访问权限:私有 更新:2023-04-27 22:16:12 浏览:226次 张贴报告

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摘要
Accurate monitoring of the key hydrological processes in paddy fields can reasonably adjust the irrigation of paddy fields to improve water use efficiency and provide more detailed key hydrological information for the assessment of non-point source pollution in paddy fields. However, due to the large spatial heterogeneity of key hydrological parameters such as runoff, ridge height, and infiltration, most hydrological models such as SCS-CN and SWAT-paddy are difficult to accurately simulate, resulting in greater uncertainty in runoff information and non-point source pollution assessment results. To solve this problem, in the present study proposing a new quantitative assessment method for key hydrological processes in paddy fields based on remote sensing and water balance theory. This study aims to : (1) The normal distribution is used to characterize the height of the drainage outlet of the paddy field ridge and the height distribution of the initial surface water based on the field observation data.(2) Inversion of high spatial and temporal resolution evapotranspiration based on multi-source remote sensing satellite and geeSEBAL model.(3) Further construction of the relationship model between leakage and water depth. Combined with the water balance model, the spatial and temporal distribution of paddy runoff, irrigation water, water depth and infiltration was simulated and evaluated based on Arcpy automation. The new method proposed in this study will further improve the simulation accuracy of key hydrological processes and non-point source pollution loss in irrigated paddy fields.
 
关键词
Paddy fields; Hydrological processes; Remote sensing; Quantitative evaluation
报告人
王侯生
学生 南京农业大学

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重要日期
  • 会议日期

    05月05日

    2023

    05月08日

    2023

  • 03月31日 2023

    初稿截稿日期

  • 05月25日 2023

    注册截止日期

主办单位
青年地学论坛理事会
中国科学院青年创新促进会地学分会
承办单位
武汉大学
中国科学院精密测量科学与技术创新研究院
中国地质大学(武汉)
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