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鲁西北地区是黄淮海平原中低产田渍涝洼地的主要分布区之一。在鲁西北的禹城市,利用挖鱼塘、建台田的工程措施,综合改造利用这类洼地。工程实施后,通过水盐调控,改善了洼地的环境状况。监测结果表明:洼地台田土壤含盐量降低,土壤逐渐熟化。土壤有机质大量整治前后分别为0.582%(1986年)、0.989%(1989年).土壤中的全氮、全磷也由整冶前的0.02%、0.14%上升到整治后的0.061%和0.158%。土壤盐分含量逐年降低,由0.50~0.92%下降到0.06~O29%。挖鱼塘建台田的生态工程措施,使浅层地下水地表化,解决了洼地积水蒸发等形成的盐渍化问题。综合环境效应显示,洼地原有的自然状况向良性转化,达到了初步治理的目的。
Northwest Shandong is one of the main distribution areas of waterlogging depressions in middle-low yield fields in the Huang-Huai-Hai Plain. In the city of Yucheng in the northwest of Shandong Province, the engineering measures of digging fish ponds and establishing Taitian are utilized to comprehensively transform and utilize such depressions. After the project is implemented, water and salt regulation will improve the environment condition of the depression. The monitoring results showed that the salinity of the tableland soil in the depression decreased and the soil matured gradually. Soil organic matter before and after a large number of remediation were 0. 582% (1986), 0.989% (1989). Total nitrogen and total phosphorus in soil also increased from 0.02% and 0.14% before remediation to 0.061% and 0.158% after remediation. Soil salinity decreased year by year, from 0.50 ~ 0.92% to 0.06 ~ O29%. The ecological engineering measures of constructing Taitian by digging fish ponds make the surface water of shallow groundwater surface and solve the salinization problem caused by the evaporation of depression water. The comprehensive environmental effect shows that the original natural conditions in the depression have been benignly transformed and reached the goal of preliminary treatment.