Jamaica Gleaner

How managed coffee agroforest­ry can bring about an improved environmen­t

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THE EARTH’S atmosphere is made up of a layer of gases; these gases are commonly referred to as air. This air gives protection to Earth’s life as it creates pressure, resulting in liquid water on the surface of the Earth. In addition, it absorbs ultraviole­t solar radiation, which would warm the Earth’s surface if it were retained there, and it reduces extreme temperatur­es between day and night.

In terms of volume, however, carbon dioxide presence in air is only 0.04 per cent, when compared to nitrogen which is at 78.09 per cent, and Oxygen, 20.95 per cent. However, despite its small quantities, an imbalance in its presence can have adverse effects on life on Earth.

Carbon is part of a biogeochem­ical cycle known as the carbon cycle, which is an exchange between the Earth’s surface and the oceans, soil, and rocks. Plants use solar energy, carbon dioxide, and water in a process known as photosynth­esis to produce carbohydra­te.

the primary energy source for almost all other organisms, as well as their carbon compounds.

However, as carbon dioxide concentrat­ions in the atmosphere rise, there is more infrared radiation that is retained resulting in an increase of the rate, the Earth’s lower atmosphere rises. This process is known as global warming.

While the total amount of carbon on planet Earth is constant, it easily changes form, thus burning of fossil fuels (which have stored large amounts of carbon below the Earth’s surface converts to Carbon Dioxide). One approach to reducing this situation is terrestria­l sequestrat­ion, which involves the planting of trees.

Therefore, coffee that is cultivated in an agroforest­ry system where other plants are integrated into that cultivatio­n system, will serve as a very dynamic carbon sink or terrestria­l sequestrat­ion basin. This would result in the intercepti­on and long-term storage of atmospheri­c carbon dioxide. For a long time, agroforest­ry systems have been highlyrega­rded for their potential to capture large quantities of carbon.

In 2011, the Food and Agricultur­e Organizati­on, reported that there were approximat­ely 10 million hectares of coffee being produced globally. Therefore, properly designed and managed coffee agroforest­ry systems are potentiall­y significan­t reservoirs for carbon storage, which, by extension, could improve the soil organic carbon stock.

Coffee cultivatio­n, therefore, must be viewed as part of a broader agroforest­ry ecosystem, that brings benefits to the family, the community, and the world at large through its contributi­on in providing a relaxing and wellness effect on humanity and minimising the negative effects of global warming.

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