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Effect of Land Use Change on the Carbon Cycle in Amazon Soils Final - ntrs nasa

Effect of Land Use Change on the Carbon Cycle in Amazon Soils Final - ntrs nasa 2025

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The document NASA-CR-195168 presents a final technical report on the effects of land use change, specifically the conversion of Amazon forests to pasture, on soil carbon cycling. The study aims to quantify carbon dynamics in deep-rooting Amazonian soils and addresses two main questions: the changes resulting from forest-to-pasture conversion and the role of carbon stored deeper than one meter. It combines various methodologies including measurements of carbon stocks, rates of carbon inputs, and analyses of soil organic matter to construct carbon budgets for both ecosystems. The findings indicate significant losses in soil carbon due to deforestation and highlight the importance of deep roots in maintaining regional hydrology and carbon cycles.

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How do land use changes affect the climate?

Changes in land cover continue to impact local- to global-scale weather and climate by altering the flow of energy, water, and greenhouse gases between the land and the atmosphere. Reforestation can foster localized cooling, while in urban areas, continued warming is expected to exacerbate urban heat island effects.

What are the effects of land use change?

Land use changes occur constantly and at many scales, and can have specific and cumulative effects on air and water quality, watershed function, generation of waste, extent and quality of wildlife habitat, climate, and human health.

How does land use change impact the carbon cycle?

The conversion of forest to agricultural land and pasture causes a large reduction of carbon storage in vegetation and soil, and the decrease of soil carbon concentration is mainly caused by the reduction of detritus, the acceleration of soil organic matter decomposition, and the destroy of physical protection to

What is a possible effect of deforestation on the carbon cycle?

When deforestation occurs, much of the carbon stored by trees is released back into the atmosphere as carbon dioxide, which contributes to climate change.

How does land use change carbon emissions?

When forests are converted to other land uses, they release their carbon as carbon dioxide, an important greenhouse gas. Increases in emissions of carbon dioxide and other greenhouse gases have led to global climate change.