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首页> 美国卫生研究院文献>The Scientific World Journal >Reducing Greenhouse Gas Emissions in Grassland Ecosystems of the Central Lithuania: Multi-Criteria Evaluation on a Basis of the ARAS Method
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Reducing Greenhouse Gas Emissions in Grassland Ecosystems of the Central Lithuania: Multi-Criteria Evaluation on a Basis of the ARAS Method

机译：减少立陶宛中部草地生态系统中的温室气体排放：基于ARAS方法的多标准评估

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N2O, CH4, and CO2 are potential greenhouse gas (GHG) contributing to climate change; therefore, solutions have to be sought to reduce their emission from agriculture. This work evaluates GHG emission from grasslands submitted to different mineral fertilizers during vegetation period (June–September) in two experimental sites, namely, seminatural grassland (8 treatments of mineral fertilizers) and cultural pasture (intensively managed) in the Training Farm of the Lithuanian University of Agriculture. Chamber method was applied for evaluation of GHG emissions on the field scale. As a result, soil chemical composition, compactness, temperature, and gravimetric moisture as well as biomass yield of fresh and dry biomass and botanical composition, were assessed during the research. Furthermore, a simulation of multi-criteria assessment of sustainable fertilizers management was carried out on a basis of ARAS method. The multicriteria analysis of different fertilizing regimes was based on a system of environmental and productivity indices. Consequently, agroecosystems of cultural pasture (N180P120K150) and seminatural grassland fertilizing rates N180P120K150 and N60P40K50 were evaluated as the most sustainable alternatives leading to reduction of emissions between biosphere-atmosphere and human-induced biogenic pollution in grassland ecosystems, thus contributing to improvement of countryside environment.
机译：N2O，CH4和CO2是导致气候变化的潜在温室气体（GHG）；因此，必须寻求解决方案以减少其农业排放。这项工作评估了两个实验点在植被期（6月至9月）期间提交不同矿物肥料的草地的温室气体排放，这两个实验点是立陶宛培训农场的半天然草地（8种矿物肥料）和文化牧场（集约化管理）。农业大学。箱式方法用于实地评估温室气体排放。结果，在研究过程中评估了土壤化学成分，致密性，温度和重量水分以及新鲜和干燥生物质及植物成分的生物质产量。此外，在ARAS方法的基础上，对可持续肥料管理的多标准评估进行了模拟。不同施肥制度的多标准分析基于环境和生产力指数系统。因此，评估了文化牧场的农业生态系统（N180P120K150）和半天然草原的施肥率N180P120K150和N60P40K50是最可持续的替代方法，从而减少了草地生态系统中生物圈与大气之间的排放量以及人为引起的生物污染，从而有助于改善农村环境。

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