Co-benefits and trade-offs of water quality mitigation measures on greenhouse gas emissions from New Zealand dairy systems

Q3 Environmental Science
Chris Smith, Tony Van der Weerden, Diana Selbie
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引用次数: 0

Abstract

As part of government climate change policy, New Zealand dairy farmers will be encouraged to reduce their greenhouse gas (GHG) emissions through a proposed pricing mechanism. With integrated farm plans on the horizon, farmers need information on how mitigations for water quality will impact GHG emissions. Using a typology approach that captured the main production attributes and drivers of nitrogen (N) and phosphorus (P) losses to water we assessed the impact of 12 current N and P contaminant mitigations on GHG co-benefits or trade-offs. Four of the mitigations had a co-benefit effect, with most of these being N mitigation measures.Trade-offs were detected for two water quality mitigations (stand-off pads and deferring effluent application), resulting in an increase in estimated GHG emissions. The remaining six water quality mitigations tested, either had a minimal impact, or had both a tradeoffand co-benefit. Our data provides pastoral farmers and rural professionals with information to guide initial conversations on options to reduce losses to water and air for developing integrated farm plans
新西兰乳制品系统温室气体排放的水质缓解措施的共同效益和权衡
作为政府气候变化政策的一部分,新西兰将通过拟议的定价机制鼓励奶农减少温室气体(GHG)排放。随着综合农场计划即将出台,农民需要有关水质缓解措施将如何影响温室气体排放的信息。采用类型学方法,捕捉氮(N)和磷(P)流失到水中的主要生产属性和驱动因素,我们评估了目前12种氮和磷污染物缓解对温室气体协同效益或权衡的影响。其中四项缓解措施具有共同效益,其中大多数是N项缓解措施。发现了两种水质缓解措施(隔离垫和推迟污水应用)的权衡,导致温室气体排放量估计增加。剩下的六项水质缓解测试,要么影响很小,要么既有权衡,也有共同利益。我们的数据为牧区农民和农村专业人员提供信息,指导有关减少水和空气损失的方案的初步对话,以制定综合农场计划
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来源期刊
Journal of New Zealand Grasslands
Journal of New Zealand Grasslands Environmental Science-Nature and Landscape Conservation
CiteScore
0.90
自引率
0.00%
发文量
27
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