Deforestation And Climate Change Pdf

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Published Jul 27, Updated Dec 9,

Investor Guide to Deforestation and Climate Change

Published Jul 27, Updated Dec 9, Tropical forest trees, like all green plants, take in carbon dioxide and release oxygen during photosynthesis. Plants also carry out the opposite process—known as respiration—in which they emit carbon dioxide, but generally in smaller amounts than they take in during photosynthesis.

The surplus carbon is stored in the plant, helping it to grow. When trees are cut down and burned or allowed to rot, their stored carbon is released into the air as carbon dioxide. And this is how deforestation and forest degradation contribute to global warming. According to the best current estimate, deforestation is responsible for about 10 percent of all global warming emissions. Where did that 10 percent figure come from? Why does deforestation occur?

Forests are cleared to make way for any of a long list of agricultural products and other human activities. But UCS analysis shows that a majority of tropical deforestation occurring today can be traced to just four globally traded commodities : beef , soybeans , palm oil , and wood products. We need to protect tropical forests from deforestation and degradation if we want to reduce emissions to the levels needed to protect the planet against the worst global warming impacts.

Ending deforestation will not solve global warming by itself, of course—urgent action is needed to cut the other 90 percent of emissions. But the problem cannot be solved if the role of tropical deforestation is ignored. And reducing deforestation has other benefits beyond reducing global warming pollution. Tropical forests are home to many unique species of animals and plants.

Animals such as the jaguar risk extinction if we do not act to protect their tropical forest habitat. In addition, tropical forests are crucial sources of food, medicine, and clean drinking water for people in developing countries. Tropical forests help regulate regional rainfall and prevent both floods and droughts. Reducing deforestation is not only a beneficial action against global warming—it also can make important contributions to saving biodiversity and supporting sustainable development.

The good news is that tropical deforestation can be reduced—and, in many places, already is being reduced. Continuing progress will require a sustained commitment by governments, businesses, consumers, and non-governmental organizations to the goal of ending—and, where possible, reversing—tropical deforestation.

We use cookies to improve your experience. By continuing, you accept our use of cookies. Learn more. Just four commodities—beef, soy, palm oil, and wood products—drive the majority of global deforestation.

And consumers can help stop it. Benefits of reducing deforestation We need to protect tropical forests from deforestation and degradation if we want to reduce emissions to the levels needed to protect the planet against the worst global warming impacts.

Strategies for reducing deforestation are working in many places. Understanding these stories can help us turn them into a global success story. Deforestation solutions The good news is that tropical deforestation can be reduced—and, in many places, already is being reduced.

Share Twitter Facebook LinkedIn. Related resources Feature. The Union of Concerned Scientists is actively monitoring the coronavirus pandemic and its implications for scientific integrity. An updated analysis of internal efforts to lower the carbon footprint of UCS. It most certainly does not—but it does change the intensity of the heaviest storms.

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Investor Guide to Deforestation and Climate Change

Large-scale conversion of tropical forests into pastures or annual crops will likely lead to changes in the local microclimate of those regions. Larger diurnal fluctuations of surface temperature and humidity deficit, increased surface runoff during rainy periods and decreased runoff during the dry season, and decreased soil moistrue are to be expected. It is likely that evapotranspiration will be reduced because of less available radiative energy at the canopy level since grass presents a higher albedo than forests, also because of the reduced availability of soil moisture at the rooting zone primarily during the dry season. Recent results from general circulation model GCM simulations of Amazonian deforestation seem to suggest that the equilibrium climate for a grassy vegetation in Amazonia would be one in which regional precipitation would be significantly reduced. Global climate changes probably will occur if there is a marked change in rainfall patterns in tropical forest regions as a result of deforestation. Besides that, biomass burning of tropical forests is likely adding CO 2 into the atmosphere, thus contributing to the enhanced greenhouse warming. This is a preview of subscription content, access via your institution.

Deforestation and Climate Change. Introduction. Deforestation has been an issue for decades, leading to massive loss of species and biodiversity.

Forests & climate change

Large-scale conversion of tropical forests into pastures or annual crops could lead to changes in the climate. We have used a coupled numerical model of the global atmosphere and biosphere Center for Ocean-Land- Atmosphere GCM to assess the effects of Amazonian deforestation on the regional and global climate. We found that when the Amazonian tropical forests were replaced by degraded grass pasture in the model, there was a significant increase in the mean surface temperature about 2. The differences between the two simulations were greatest during the dry season.

Amazonian Deforestation and Regional Climate Change

Alexandru , A. Sushama , : Impact of land-use and land-cover changes on CRCM5 climate projections over North America for the twenty-first century. Climate Dyn.

Climate change is a systemic risk that poses vulnerabilities to businesses in all sectors, and has the potential to trigger the collapse of an entire industry or economy. As the material risks posed by climate change become increasingly apparent, an growing number of investors are mobilizing to address this risk in their portfolios. However, a major driver of climate change remains largely overlooked as an avenue for engagement — deforestation. Deforestation is a major contributor to greenhouse gas GHG emissions, which have already triggered 1.

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What, exactly, is the relationship between deforestation and climate change? The Rainforest Alliance breaks down the numbers for you—and explains our innovative approach to keeping forests standing. Among the many gifts forests give us is one we desperately need: help with slowing climate change. Trees capture greenhouse gases GHGs like carbon dioxide, preventing them from accumulating in the atmosphere and warming our planet. What the deforesters do with the felled trees—either leaving them to rot on the forest floor or burning them—creates further emissions.

Loss of forests contributes as much as 30 percent of global greenhouse-gas emissions each year--rivaling emissions from the global transportation sector. Despite hopes from climate advocates that deforestation policy would be one of the few concrete things coming out of the December UN climate meeting, Copenhagen talks concluded without an agreement for a comprehensive plan for deforestation. Instead, deforestation was put on hold along with discussions for an overall climate agreement.

Explore the relationship between forests and several key themes critical to sustainability and the health of our future ecosystems. Forests remove and store carbon from the atmosphere, representing a cost-effective solution for mitigating climate change. The loss or degradation of forests compromises their ability to remove emissions.

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