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首页> 外文期刊>Hydrology research >Simulated nitrogen teaching patterns and adaptation to climate change in two Finnish river basins with contrasting land use and climatic conditions
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Simulated nitrogen teaching patterns and adaptation to climate change in two Finnish river basins with contrasting land use and climatic conditions

机译：在土地利用和气候条件不同的情况下，模拟了两个芬兰河流域的氮素教学模式和对气候变化的适应

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摘要

Inorganic nitrogen (N) loading was simulated by the catchment scale INCA-N model from two large river basins with contrasting land use. The main aim was to analyze the timing and origin of inorganic N loading and the effectiveness of different water protection methods. Predicted changes in precipitation and temperature increases the nutrient load from catchments to water bodies in future climate. The total inorganic N load from the forested Simojoki river basin located in northern Finland was about 5% of that from the Loimijoki river basin in south western Finland, In the Loimijoki river basin agriculture dominated inorganic N loading. When applying realistic water protection methods (limits on manure spreading) the simulated inorganic N load from the river basin decreased by 11%. With more drastic methods (no manure spreading + catch crop) a decrease up to 34% was achieved, In the Simojoki river basin there were several equally significant sources, so suitable combinations of different water protection measures would be the most efficient way to decrease the inorganic N load. As the inorganic N load may be composed of very different sources, depending on land use in the river basin, efficient allocation of water protection measures requires detailed analysis of different sources of loading.
机译：利用流域规模INCA-N模型，从两个大型流域对比了土地利用，模拟了无机氮（N）负荷。主要目的是分析无机氮加载的时机和成因，以及不同节水方法的有效性。预计的降水和温度变化会增加未来气候中流域到水体的养分负荷。来自芬兰北部森林茂密的Simojoki流域的无机氮总负荷约为芬兰西南部Loimijoki流域的无机氮负荷的5％。在Loimijoki流域，农业以无机氮负荷为主。当采用现实的水保护方法（限制粪肥扩散）时，来自流域的模拟无机氮负荷降低了11％。如果采用更严厉的方法（不撒肥+收割农作物），减少量可高达34％。在Simojoki流域，有几个同样重要的水源，因此，不同水保护措施的适当组合将是减少水污染的最有效方法。无机氮负荷。由于无机氮负荷可能由非常不同的来源组成，这取决于流域的土地用途，因此有效分配水保护措施需要对不同负荷来源进行详细分析。

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