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首页> 外文期刊>Livestock Science >A review of farm level modelling approaches for mitigating greenhouse gas emissions from ruminant livestock systems.
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A review of farm level modelling approaches for mitigating greenhouse gas emissions from ruminant livestock systems.

机译：对减轻反刍家畜系统温室气体排放的农场一级建模方法的评论。

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Ruminant livestock systems contribute to global warming through the emission of nitrous oxide (N< sub>2O), methane (CH< sub>4) and carbon dioxide (CO< sub>2). This paper discusses a general framework for a whole-farm approach to develop cost-effective GHG mitigation strategies. A dairy farm is a complex system with different interacting components. Generally, whole-farm approaches distinguish at least an animal component and a soil-crop component. Whole-farm models should be able to give an accurate representation of the internal cycling of materials and its constituents as well as the exchange between the farming system and its environment. The paper gives an overview of current whole-farm models that are able to simulate GHG emissions for dairy farms. These models are DairySim, FarmGHG, SIMS< sub>DAIRY and FarmSim. All models are able to calculate CH< sub>4 and N< sub>2O emissions, but differences appear in the ability to calculate CO< sub>2 emissions, economics and other parameters. The effects of selected mitigation strategies are demonstrated with some of the models. It is concluded that a whole-farm approach is a powerful tool for the development of cost-effective GHG mitigation options as it reveals relevant interactions between farm components. Model calculations underlined the relationship between farm gate N surplus and GHG emissions, and thus the possibility to use N surpluses as an indicator for GHG emissions.
机译：反刍动物系统通过排放一氧化二氮（N 2 O），甲烷（CH 4 ）和二氧化碳（CO 2 ）。本文讨论了开发成本有效的温室气体减排策略的全农场方法的一般框架。奶牛场是一个复杂的系统，具有不同的交互组件。通常，全农场方法至少区分动物成分和土壤作物成分。全农场模型应该能够准确表示物料及其成分的内部循环，以及耕作系统与其环境之间的交换。本文概述了当前能够模拟奶牛场温室气体排放的全农场模型。这些模型是DairySim，FarmGHG，SIMS DAIRY 和FarmSim。所有模型都能够计算CH 4 和N 2 O排放，但是在计算CO 2 排放，经济性和其他方面的能力存在差异。参数。某些模型证明了所选缓解策略的效果。结论是，全农场方法是开发具有成本效益的温室气体减排方案的有力工具，因为它揭示了农场组成部分之间的相关相互作用。模型计算强调了农场大门氮过剩与温室气体排放之间的关系，因此有可能将氮过剩用作温室气体排放指标。

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