Showing results for: Land
Just under 40% of the entire terrestrial surface of our planet is used for agriculture, the vast majority of this for pasture. The land area which can be defined as wilderness – areas where humans have little influence – accounts for around 20% of the total land area and this extent is diminishing. These wilderness areas are, however, vital for the continued existence of wildlife plant species, and ecosystem services. As human populations grow and their lifestyle and consumption patterns become more resource demanding, the pressure on land use is increasing, and the multiple uses we have for land are often in competition with one another. Different cultures define ownership and rights to use land in contrasting ways, making land not only a precious resource but often a focus of contention too.
A new center has been launched as part of the wider Chatham House organisation, the Hoffman Centre (hoffmanncentre.eco). The Centre will aim to bring clarity to complex issues through trusted evidence and insightful analysis.
This paper compares stylised, hypothetical dietary scenarios to assess the potential for reducing agricultural land requirements. It suggests that a combination of smaller shifts in consumer diet behaviour – such as reducing beef consumption by replacing with chicken, introducing insects into mainstream diets and reducing consumer waste – could reduce agricultural land requirements.
In this Nature commentary Jess Davies from Lancaster Environment Centre discusses the urgent need to deal with the degradation of our soils, focusing on the need for the private sector to take this sustainability threat seriously by taking action on soil. Today one-third of all soils and more than half of agricultural soils are moderately or highly degraded.
A new study submitted to us by an FCRN member discusses the virtual land footprint associated with regional supply capacities.
This perspective article exposes and explains uncertainties in our historical calculations of carbon fluxes associated with land use and land cover change, and uses comparisons between dynamic global vegetation models (DGVMs) to estimate the effects of these uncertainties on historical, current and future assessments of carbon fluxes between the land and air.
With global trade, UK consumption patterns are displacing cropland use to other countries. This paper by FCRN members Henri de Ruiter, Jennie Macdiarmid and Pete Smith looks at the environmental consequences of competition for global agricultural land and specifically at the total land footprint associated with the total livestock product supply in the UK.
This article by agricultural researchers in Spain reviews the historical changes in land use and soil management practices, and examines how these changes have contributed to soil erosion in the past, before presenting modelling data to show how soil erosion may impact on agricultural yields in the future.
In this Nature Comment article, Elena Bennett of the McGill School of Environment and the Department of Natural Resource Sciences, Québec, argues against the underlying premise of the ‘land-sparing’ vs ‘land-sharing’ debate that has dominated the agriculture-environment discourse for decades, and advocates a new and more holistic approach that focuses on maximising human well-being.
One of the greatest challenges of this century is figuring out how to feed more people, while significantly reducing greenhouse gas emissions from agriculture, just as other demands on land - for example, for sequestration and bioenergy production - are increasing.
Over the past half-century, the paradigm for agricultural development has been to maximize yields through intensifying production, especially for cereal crops. But achieving food security and building a healthy, resilient global food supply is about more than just the quantity of calories provided. New metrics of success and methods of evaluation are needed in order to measure progress towards meeting the world’s nutritional needs within environmental limits.
A key ingredient in junk food is vegetable oil. 60% of this oil is from oil palm and soybean, production of which has been expanding in Southeast Asia and South America, resulting in widespread deforestation and biodiversity loss. In this article, the authors calculate the amount of current deforestation due to vegetable oil consumption (through junk food) and extrapolate vegetable oil demand to predict the deforestation future consumption patterns would cause by 2050.
This report by Zero Carbon Australia, outlines how research on greenhouse gas emissions from land use (agriculture and forestry) can be reduced to zero net emissions, coupled with economic opportunities and increased resilience in the face of climate change. The land use sector is the second largest source of emissions in Australia and is highly exposed to the impacts of climate change. 15% of total emissions in Australia are from the agriculture and forestry sectors, the largest component of which is land clearing for grazing.
An academic debate on the controversial possibility of decreasing greenhouse gas emissions via increased beef production in the Brazilian Cerrado finds a new set of commentators, who have responded to an original paper by de Oliveira Silva et al. earlier in 2016 in the same journal, Nature Climate Change.