Journal of Integrative Agriculture ›› 2014, Vol. 13 ›› Issue (2): 365-377.DOI: 10.1016/S2095-3119(13)60272-5

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Studies on Methane Emissions from Pastoral Farming in New Zealand

 LI Meng-meng, ZHANG Gui-guo, SUN Xue-zhao, DONG Shu-ting , Simone O Hoskin   

  1. 1.College of Animal Science and Technology, Shandong Agricultural University, Tai’an 271018, P.R.China
    2.Grasslands Research Centre, AgResearch Limited, Private Bag 11008, Palmerston North 4442, New Zealand
    3.College of Animal Science and Technology, China Agricultural University, Beijing 100193, P.R.China
  • 收稿日期:2012-10-29 出版日期:2014-02-01 发布日期:2014-02-06
  • 通讯作者: ZHANG Gui-guo, Mobile: 13954859206, E-mail: zhanggg@sdau.edu.cn
  • 作者简介:LI Meng-meng, E-mail: limen6217@163.com
  • 基金资助:

    We thank the New Zealand government for the Livestock Emissions and Abatement Research Network (LEARN) fellowship.

Studies on Methane Emissions from Pastoral Farming in New Zealand

 LI Meng-meng, ZHANG Gui-guo, SUN Xue-zhao, DONG Shu-ting , Simone O Hoskin   

  1. 1.College of Animal Science and Technology, Shandong Agricultural University, Tai’an 271018, P.R.China
    2.Grasslands Research Centre, AgResearch Limited, Private Bag 11008, Palmerston North 4442, New Zealand
    3.College of Animal Science and Technology, China Agricultural University, Beijing 100193, P.R.China
  • Received:2012-10-29 Online:2014-02-01 Published:2014-02-06
  • Contact: ZHANG Gui-guo, Mobile: 13954859206, E-mail: zhanggg@sdau.edu.cn
  • About author:LI Meng-meng, E-mail: limen6217@163.com
  • Supported by:

    We thank the New Zealand government for the Livestock Emissions and Abatement Research Network (LEARN) fellowship.

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摘要： The aim of this paper was to give a basic understanding of studies on methane emissions of New Zealand, as we know the agriculture of New Zealand is pastoral farming, most livestock animals are grazed in pasture, and quantities of methane were released from the digestive tract and animals excreta. In New Zealand some 50% greenhouse gases (GHG) sources are attributed to agriculture and one third is methane from livestock enteric formation. For many years, many researchers have been exploiting the techniques and methods to measure the emission of methane of New Zealand, further more studing the available options to alleviate the methane emissions. Their pioneering work and successful experiences including the determined methods and mitigation strategies are worth learning for scholars around the world. Some of their approaches were not only suitable for New Zealand grazed livestock, but for many other countries, even the animals are intensively bred in pen. The calorimeter/respiration chamber is the most exactly method in present, but it needs expensive equipments and skilled manipulators, so there are still some difficulty in applying this approach extensively in practice. Sulfur hexafluoride (SF6) trace technique is much adopted for grazed livestock evaluating the methane emission, though its veracity was doubted by some researchers, it is still a good option in present for studying the GHG emissions for grazing animals. By measuring the rumen volatile fatty acid (VFA) concentration to estimate the methane emission is a relatively simple approach, it is just only a rough evaluation, and it is unsuitable for exact study, but this method may be used in China for extensively raised ruminant. In present China, the ruminants are fed in an extensively managed state, the diversities of roughage and animals varieties caused difficult to exactly estimate the methane emission. So exploiting the available options is much important for constituting the exhaustive emission inventory. This review just outline some practical techniques of New Zealand, those maybe a good reference for researchers to carry out their studies in this field, after all New Zealand have been persisting many years and acquired great achievements in methane mitigation area.

关键词: methane , New Zealand , pastoral farming

Abstract: The aim of this paper was to give a basic understanding of studies on methane emissions of New Zealand, as we know the agriculture of New Zealand is pastoral farming, most livestock animals are grazed in pasture, and quantities of methane were released from the digestive tract and animals excreta. In New Zealand some 50% greenhouse gases (GHG) sources are attributed to agriculture and one third is methane from livestock enteric formation. For many years, many researchers have been exploiting the techniques and methods to measure the emission of methane of New Zealand, further more studing the available options to alleviate the methane emissions. Their pioneering work and successful experiences including the determined methods and mitigation strategies are worth learning for scholars around the world. Some of their approaches were not only suitable for New Zealand grazed livestock, but for many other countries, even the animals are intensively bred in pen. The calorimeter/respiration chamber is the most exactly method in present, but it needs expensive equipments and skilled manipulators, so there are still some difficulty in applying this approach extensively in practice. Sulfur hexafluoride (SF6) trace technique is much adopted for grazed livestock evaluating the methane emission, though its veracity was doubted by some researchers, it is still a good option in present for studying the GHG emissions for grazing animals. By measuring the rumen volatile fatty acid (VFA) concentration to estimate the methane emission is a relatively simple approach, it is just only a rough evaluation, and it is unsuitable for exact study, but this method may be used in China for extensively raised ruminant. In present China, the ruminants are fed in an extensively managed state, the diversities of roughage and animals varieties caused difficult to exactly estimate the methane emission. So exploiting the available options is much important for constituting the exhaustive emission inventory. This review just outline some practical techniques of New Zealand, those maybe a good reference for researchers to carry out their studies in this field, after all New Zealand have been persisting many years and acquired great achievements in methane mitigation area.

Key words: methane , New Zealand , pastoral farming