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首页> 外文期刊>International Journal of Environmental Impacts: Management, Mitigation and Recovery >HOW DOES TARGETED GRASSING OF ARABLE LAND INFLUENCE DRAINAGE WATER QUALITY AND FARM ECONOMIC INDICATORS
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HOW DOES TARGETED GRASSING OF ARABLE LAND INFLUENCE DRAINAGE WATER QUALITY AND FARM ECONOMIC INDICATORS

机译：如何有针对性的植草耕地吗影响排水水质和农场经济指标

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摘要

A 7-year experiment with grassing of arable land in the catchment recharge zone was conducted in a small (60 ha) agricultural tile-drained catchment (Bohemian - Moravian Highlands, Czech Republic). Together with water quality, the effect of increasing grassland area on selected farm economic indicators was evaluated. The area for grassing was delimitated by the method of relative soil infiltration vulnerability based on the analysis of five-digit valuated soil ecological unit code, available as .shp file at the scale 1:5000. Effect of grassing on farm budget was estimated by comparison of revenues (crop sales and subsidies) with technology costs of three different grassland area proportion within the agricultural land managed by the farm (1 200 ha). It was proved that nitrate concentrations in drainage water were influenced predominantly by the land use of the recharge zones within the drainage subcatchment. The grassing of arable land focused into proper catchment area (recharge zone) demonstrated a significant decrease in both NO_3 concentrations and N loads by 35% and 25%, respectively. On the other hand, increasing areas of grasslands would lead to decrease of landscape productive service, farm turnover and profit and the bigger dependence on subsidies. That's why it is necessary to consider the non-productive functions of grasslands also as public service, taking into account the savings in water cleaning costs and the price of increased water retention. Presented approach come forward when setting the subsidies dealing with soil and water protective measures in agrarian landscape.
机译：一个7年的实验与耕地的植草在集水区域进行充电小农业tile-drained流域(60公顷)(波西米亚-摩拉维亚的高地,捷克共和国)。和水质的影响增加草原地区选定的农场经济指标是评估。清楚地说明了放牧的方法相对土壤渗透脆弱的基础上土壤分析的五位身价生态单位代码,可作为.shp文件1:5000规模。预算收入的估计相比之下(作物销售和补贴)和技术成本三种不同的草地面积比例在农业用地管理的农场(200公顷)。在排水水浓度的影响主要的土地利用充电在排水subcatchment区。植草耕地集中到正确的排水区(充电区)演示了一个NO_3浓度显著下降分别和N负荷35%和25%。另一方面,越来越多的地区的草原导致减少景观生产服务,营业额和利润和更大的农场补贴的依赖。需要考虑非生产性草原也是公共服务功能,考虑到节省水清洗成本和价格的增加保水性。提出的方法设置时挺身而出处理水土保护补贴措施在农业景观。

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