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首页> 外文期刊>Irrigation and Drainage >IMPACTS OF DRAINAGE ACTIVITIES FOR CLAY SOILS ON HYDROLOGY AND SOLUTE LOADS TO SURFACE WATER
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IMPACTS OF DRAINAGE ACTIVITIES FOR CLAY SOILS ON HYDROLOGY AND SOLUTE LOADS TO SURFACE WATER

机译：黏土排水活动对水体水文和溶质负荷的影响

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摘要

Several extended field-monitoring programmes were set up in the Netherlands to study hydrological and surface water quality impacts of agricultural drainage activities for clay soils. At the field scale, agricultural land use data and hydrological measurements were combined with analysis of drainage water quality data, and related to the loading of the surface water system with salts and nutrients. Water, salt, and nutrient balances of the soil and/or surface water system were set up to analyse the hydrological behaviour of the systems studied and to quantify solute sources. Field observations were performed by field data analysis and numerical modelling, using the ID F1W-MultiSWAP code, a 2D dual-porosity code, and the MODFLOW code. Drainage activities showed a significant impact on hydrology by influencing subsurface drainage water flow paths and regional-scale groundwater seepage. Through solute balances it was shown that the salt and nutrient loading of the surface water were clearly affected by both agricultural and drainage activities. The conclusion was that the drainage activities and their surface water quality aspects need to be studied in an integrated way. Changes in subsurface drainage system redesign, surface water level management,and the field-scale nutrient management need to be integrated.
机译：荷兰建立了几个扩展的野外监测计划，以研究农业排水活动对黏土的水文和地表水质量影响。在田间尺度上，将农业土地利用数据和水文测量与排水水质数据分析相结合，并与地表水系统中盐分和养分的负荷有关。建立土壤和/或地表水系统的水，盐和养分平衡，以分析所研究系统的水文行为并量化溶质来源。使用ID F1W-MultiSWAP代码，2D双孔隙度代码和MODFLOW代码，通过现场数据分析和数值建模进行了现场观察。排水活动通过影响地下排水的水流路径和区域规模的地下水渗漏，对水文学产生了重大影响。通过溶质平衡，表明地表水的盐分和养分含量明显受到农业和排水活动的影响。结论是，排水活动及其地表水水质方面需要综合研究。地下排水系统的重新设计，地表水位管理和田间规模的养分管理需要进行整合。

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