Showing results for: GHG impacts and mitigation
A new paper titled Distributions of emissions intensity for individual beef cattle reared on pasture-production systems details a new method, developed at the North Wyke Farm Platform, of assessing grazing livestock impacts and benefits at the level of individual animals.
This paper presents the findings of a food systems model that considers how specific agronomic characteristics of organic agriculture could be harnessed so as to enable it to play a greater role in sustainable food systems.
This paper, by researchers from the US and the Netherlands, presents the findings of a model analysis that estimates how much soil organic carbon (SOC) has been lost, and from where, as a result of land use and land cover change (LU-LCC) associated with human agricultural activities.
This paper by FCRN member Dana Boyer examines how policy interventions at the city scale can affect three environmental outcomes of food production: greenhouse gas emissions, water use and land use. It uses India’s capital city Delhi as a case study. It sets out to assess the magnitude of city-scale food system actions as compared to certain actions which can be taken beyond the city boundary.
In October 2016, the Kigali Amendment to the Montreal Protocol was adopted by the world’s nations, mandating the phase-down of hydrofluorocarbons (HFCs) by cutting their production and consumption. This new report from the University of Birmingham, published at the one year anniversary of the Kigali Amendment, highlights the significant challenge facing the European retail industry as it transitions from damaging HFCs to natural refrigerants.
This study by US- and New Zealand-based researchers estimates the effect of elevated CO2 (eCO2) on the edible protein content of crop plants, and subsequently on protein intake and protein deficiency risk globally, by country. The basis for this study is that 76% of the world’s population derives most of their daily protein from plants, and that a meta-analysis by Myers, et al. (2014) revealed that plant nutrient content (of various types including protein, iron and zinc) changes under elevated CO2.
Certain cereal grains and other crop plants have been shown to have lower iron concentrations when grown under elevated CO2. This study by researchers from Massachusetts, USA, examined diets from 152 countries to investigate which groups of people might be most at risk of iron deficiency as a result of increasing CO2 emissions, on the basis of current dietary composition, the current global prevalence of iron deficiency, and projected CO2 emissions up to the year 2050.
UK-based organisation Global Food Security has published a short report on ‘Paris-compliant healthy food systems’.
This paper examines the common assumption that local foods are more sustainable than foods sourced from more distant locations. Using the multi-criteria decision aid method (MCDA), which allows for multi-dimensional criteria to be assessed, this paper answers the following research question: “how do selected local or global food products compare and which rank first in terms of sustainability performance?”.
This study by FCRN member Helen Harwatt and colleagues seeks to determine whether simple dietary changes can make a meaningful contribution to greenhouse gas (GHG) mitigation efforts, by considering a very simple example of US consumers substituting beans for beef in their diets. The study uses available life cycle assessment (LCA; see Chapter 2 of foodsource) data to predict the change in GHG emissions that would be associated with a substitution of beans for beef (substitution on the basis of calories, and on the basis of protein content). They place these projected changes in the context of US 2020 GHG reduction targets.
In this opinion piece, Edward Parson of the Emmett Institute on Climate Change and the Environment, UCLA, argues that Climate Engineering (CE) must urgently be given greater and more serious consideration within climate change research and policy, and calls upon the IPCC to take responsibility for this.
This OECD Food, Agriculture and Fisheries report employs a meta-analysis/literature review approach to identify and analyse barriers to the adoption of “climate-friendly” policies in agriculture; that is, the adoption of measures to enhance the adaptation of farming to the impacts of climate change, and the mitigation of its contributions to greenhouse gas (GHG) emissions. It should be noted that the report does not go into specifics about what constitutes a climate-friendly practice: this is taken to be an understood concept and the focus of the report is on the barriers to adoption of these measures, not the measures themselves.
Recognising that changing what people eat can make a major contribution to the environmental performance of the food system, the new and updated Livewell Plates in this report illustrate the minimal dietary changes required to reach the 2 °C climate target. The report presents simple steps – such as eating more plants, legumes and grains – that could help cut food-related greenhouse gas emissions by 30% by 2030.
In this short perspective piece, researchers from the Netherlands, USA and the UK critically assess the COP21 4 per 1000 initiative, which seeks to increase global yearly agricultural soil organic carbon sequestration by 4‰ (= 0.4%, or 1.2 billion tonnes). The authors argue that as soil organic matter (SOM) also contains nitrogen (N), with a C-to-N ratio always approaching 12, this will require the sequestration of an extra 100 million tonnes of N per year, and they question the feasibility of achieving this.
A new resource has been created by the Carbon Brief, which brings together data from a number of indicators that show the effects of climate change, showing trends in our climate, atmosphere, oceans, and the cryosphere (ice)