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R.A.C. Project No 152 PL : Report
出版Environment Ontario, Research and Technology Branch, 1989
ISBN077295898X9780772958983
URLhttp://books.google.com.hk/books?id=Svt4SrOQ5SYC&hl=&source=gbs_api
註釋Investigation of the hydrology of the agricultural drainage program, and its impacts on the land phase of the hydrologic cycle. Work included the development of an annotated bibliography following an extensive literature review; the performance of statistical tests on flow data to identify trends in the data which could be attributed to the drainage process; and the impacts of both field level tile drainage and small basin ditch drainage through the use of a physically-based hydrologic model capable of simulating the drainage process continuously through the frost free period. Required input includes field and tile geometry (field length and slope, number and spacing of drain tiles, depth of tile), soil characteristics (depression storage capacity, depth of ploughed layer and depth to impervious layer), groundwater parameters (saturated hydraulic conductivity and drainable porosity), and meterological data (hourly rainfall and mean daily temperature). Output includes soil moisture storage, groundwater table height, subsurface hydrograph, and contribution to surface runoff. The model was tested on two fields in southwestern Ontario.