In 2007, a rise in world food prices led to a global rush for land in the form of land graves or large-scale land holdings. Over the past two decades, such acquisitions have transformed millions of hectares of land in developing countries. Although such changes could increase the cultivation of crops needed to promote the world’s growing population and new agricultural practices and technologies, it can also pose a threat to environmental degradation, increased carbon emissions and the livelihood of small farmers .
The socioeconomic and environmental consequences of such large-scale land acquisition have been studied, but its impact on land graves carbon emission At least not yet.
In a newly published study in the journal Nature foodResearchers focused on how large-scale land acquisition is driven and the implementation of large-scale land acquisition for agricultural development affects carbon emissions, and in turn, climate change.
“Overall, the findings suggest that this process is a cost-effective way to cook more food while reducing carbon emissions”, said Chuan Liao, assistant professor and lead author of the study at ASU’s School of Sustainability.
“It is unrealistic to say that we cannot convert more land, as the world’s population is growing, especially in developing countries, but we should reduce carbon emissions while advancing agricultural development,” he said.
The study researchers analyzed countries that were engaged in more than 1,000 international, large-scale land acquisitions. They identified three distinct geographic areas where land captures, including coastal West Africa and the East African Rift Valley; Southeast Asia; Central-South Latin America; And Eastern Europe and Western Russia.
The study showed that the search for resources, such as arable land And water makes land acquisition on a large scale. That is, countries with low or medium-low arable land availability are usually investors, while those with medium or high arable land serve as hosts, Liao said. Similarly, countries with low water scarcity often supply land, while countries with high water scarcity invest in land.
Researchers also estimated carbon emissions from about 1,500 cases of large-scale land Acquisition Under two agri-development scenarios, including business as usual and enforcement of environmental regulations.
In analyzing those emissions, the researchers found that the business-as-usual scenario, namely clearing all vegetation from 37 million hectares of land, would emit about 2.26 gigatons of carbon. Conversely, implementing environmental regulations to hinder land conversion and conserve high carbon-value forests will reduce emissions by 0.81 gigatonnes.
The study also found that by implementing environmental regulation policies, land reductions could not be used in the same proportion as those used for agricultural development.
“Instead, we allow Agricultural development On lands that have lower carbon values, “Liao explained.” Our strategy is to better manage these businesses because food safety and Carbon Emission Mitigation is both important. ”
Liao, C., Nolte, K., Sullivan, J.A. et al. Carbon emissions and potential mitigation from global lands. Nat Food 2, 15–18 (2021). doi.org/10.1038/s43016-020-00215-3
Arizona State University
Quotes: The study looks at how land holdings are affected by climate change (2021, 13 January) on 13 January 2021 from https://naveenbharat.org/news/2021-01-acquisitions-affect-climate.html
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