View of Hydrological Environment Research in Irrigation and Drainage Science as Environmental Science and Technology

农业工程中的排灌科学面临着巨大的变革。过去这项研究的主要目标是“改善农业基础设施”。现在，这门科学正在成为一门研究水资源利用的科学，它包括区域生活环境、自然环境和社会文化环境。这项研究(出版的书)是由《排灌科学》上的研究人员讨论的，他们讨论了水文环境科学作为环境科学和技术的一个分支应该是什么，以及满足社会需求的用水技术。大约50名顶尖研究人员总结了他们的发现和对他们未来研究的展望。他们的研究分为基础研究部(土壤物理、蒸发转化、地表和地下水文学)和应用研究部(水田灌溉、旱地灌溉、排水和农田整理)。总结了各研究部门的历史沿革和发展前景，并从“天人合一”的角度考虑了未来用水用于“营造舒适美丽的乡村环境”的可能性。在此背景下，有关于未来研究需要的讨论记录，如新的学科、新的方法、新的应用领域等。结果，这份报告完成了400多页。它的副本已分发给日本各地的研究人员和工程师以供参考，并等待进一步的讨论。

Irrigation and Drainage Science in Agricultural Engineering now faces great changes. The main objective of the study in the past was "to improve agricultural infrastructure". Now the science is becoming a study of water-uses which includes regional living environment, natural environment, and sociocultural environment. This research (published book) was brought as a result of the discussion of the researchers in the Irrigation and Drainage Science, on how Hydrological Environmewnt Science should be as a division of Environmental Science and Technology, and water use techniques which satisfy the social needs.About fifty leading researchers have summarized their findings and the outlooks for the their future studies. Their studies are classified into Basic Research Division (Soil Physics, Evapotransipration, Surface and Subsurface Hydrology) and Applied Research Division (Paddy Irrigation, Upland Irrigation, Drainage, and Farmland Consolidation). The history of each research division and the outlooks are also summarized.The possibilities of future water uses for "Creation of comfortable and beautiful rural environment" are also considered from the standpoint of "Symbiosis of nature and Man". There are records of discussion on the future research needs in this context, such as new subjects, new methods, and new applied fields.As a result, the report over four hundred pages was completed. It copies have been distributed to the researchers and engineers all over Japan to give reference, and further discussions are awaited.