With Jatropha’s ability to thrive in arid regions and it’s ability to stabilize and even reverse the effects of desertification. Will Jatropha cultivation be a baby – step towards the development of knowledge to be used in terraforming technology?
By: Vanessa Uy
With global warming now increasing the rate of desertification that’s poised to ruin the croplands of relatively arid developing nations. Even a “recently developed” country like China is loosing 54 billion yuan annually to desertification. In short, do we have to resort to a technology that only exists in science fiction literature in order to save humanity and our environment? But before delving any deeper, let us examine existing ideas in current use or will be used in making a certain piece of land suitable for farming and or returning it to its more naturally bio diverse state.
The concept of land reclamation is broadly defined by two distinct practices. One of which involves creating new land from the sea or riverbeds. Recently the most famous example is the one’s being demonstrated in the coastal region of Dubai, UAE – namely Palm Jumeirah or “The Palm Island” as the project is widely known in the West. The other practice of land reclamation involves restoring an area to a more natural state usually when an open pit mine is resealed, the topsoil returned so that the area can either be farmed or turned into an arboretum. Or recovering the chemical pollutants / contaminants from the topsoil and groundwater. Or reversing the effects of salination to make the land useable again. The last two are currently used to rehabilitate agricultural lands in the Aral Sea region, which was rendered useless due to irrigation and agricultural mismanagement that resulted in desertification compounded by salination and excessive amounts of pesticide contamination.
Did you know that even in dry climates, a typical virgin / undisturbed land is able to support considerable vegetation if not disturbed (the woodlands found in the Israel – Lebanon border for example). The roots of trees and plants secure the soil and hold water, thus preserving the area from erosion. But poorly managed cultivation / farming practices of the plains and timber cutting on the slopes removes roots and expose the land to wind and water erosion, which flushes away deposits of gravel from the lower slopes down to the plain. Further overcultivation destroys the productivity of the plains. Which is now set aside for grazing by herds of cattle. Agricultural activities of the area are forced to move up to the low slopes, where the hazard of rapid soil erosion of the topsoil is much greater. The ensuing loss of fertility of the steeper hillsides caused by topsoil runoff renders the area useless for further cultivation, and cattle grazing move up to the slopes, accelerating the process of erosion by constant grazing. If further “destruction” of the already barren landscape is left unchecked especially when there is no longer enough to browse for cattle. The area is then turned over to sheep and goats to be stripped clean. This results in the total desolation of a once fertile landscape and this stage is marked by the disappearance of all the topsoil and large sections of bedrock are exposed on the hill and plain. The resulting dusty land can no longer support life and could enlarge in area during times of scant or nonexistent rainfall. Thus accelerating the spread of desertification, like the one currently happening in China that’s costing the Beijing Government 54 billion yuan annually from farming revenue losses.
The man-made desertification described previously is now threatening to affect small villages in the South Sumatra region of Indonesia were the Palm Oil industry, driven by the bio-fuel boom, resorted to slash and burn methods of agriculture. Even ancestral lands of marginal economic value in the South Sumatra region are now starting to be affected by the hastily planned Palm Oil plantation expansion whose “green credentials” have recently been found of dubious value to say the least.
In evaluating the available solutions to halt the spread of desertification, Large scale Jatropha cultivation is probably one of the best – if not the best – way of stabilizing and even stopping the spread of desertification because Jatropha is not a genetically modified organism. Remember our bad experiences with genetically modified organisms back in the late 1990’s when Monsanto made a large scale trial cultivation of their genetically modified soybean crop. The genetically modified soybean was said to be pest and weed resistant, but quite a large number of people developed allergies when they consumed Monsanto’s genetically modified soybean.
Using Jatropha to make desertificated land arable can be compared that to the concept of terraforming. Terraforming as a concept is a staple in science fiction stories where an alien planet’s environment is made to be more hospitable to humans by using technology like large bio - reactors filled with genetically engineered blue-green algae to make the atmosphere breathable to humans. By turning excess atmospheric carbon dioxide into oxygen like the oft shown planned terraforming of the planet Venus and Mars. Desert environments are somewhat hostile to us humans especially if you take into account that you can’t grow any food crops there. As large scale Jatropha cultivation continues as a pioneering species, the leaves being shed as the plants continue to grow plus the waste pulp from bio-fuel production can be used as an organic fertilizer thus steadily increasing the fertility of the arid lands in which the Jatropha are planted. When it comes to the growing concern about increasing carbon dioxide in our atmosphere threatening the stability of our climate, large scale Jatropha plantations can also serve as a “carbon sink”. Jatropha can do this by absorbing carbon dioxide in the atmosphere and depositing it into the plant’s own cellular structure as carbohydrates, sugars, and cellulose where it no longer contributes to the increased greenhouse effect. This is like hitting to birds with one stone since the increased carbon dioxide in our atmosphere is primarily responsible for the increased trend in desertification. This project could be the first step in making terraforming a practical environmental engineering reality, not just an esoteric / recondite intellectual exercise in science fiction novels.
Showing posts with label Desertification. Show all posts
Showing posts with label Desertification. Show all posts
Friday, March 7, 2008
Friday, February 22, 2008
Will Jatropha Revolutionize the Bio-Fuel Industry?
With crude oil prices poised to reach the one hundred US dollar – per – barrel mark. Will a Jatropha based bio-fuel industry be a more eco-friendly and socially responsible alternative to food crops now currently used?
By: Vanessa Uy
With the controversy surrounding the use of staple food crops as a source of bio-fuels increasingly becoming a focus of a "media frenzy” for some time now. There might be a more Earth-friendly alternative without the unforeseen ecological impacts of genetically modified crops and the current “mono culture” based practice of intensified cultivation of a few species of staple food crops.
Jatropha, scientific name Jatropha podagrica also known as the physic nut, coral plant, gout plant, Buddha belly plant, is a plant which may hold such promise. Due to the plant’s ability to tolerate arid climates, fast growing and it’s usefulness for a variety of products, Jatropha can yield up to two tons of bio-diesel fuel per year per hectare. Put it another way, Jatropha can yield about 1,000 barrels of oil per year per square mile.
Basing on such relatively scant yield figures, Jatropha like other bio-fuels in general, is not yet an economically viable replacement to crude oil as a tradable commodity. But the plant’s other redeeming qualities like minimal requirement for irrigation and chemical fertilizers. And also a large field of Jatropha has the ability to stabilize or even reverse the effects of desertification means that growing the plant as a source of bio-fuel will not only be very eco-friendly but it will also not be in competition with staple food crops. And the plant is also a source of other products after the bio-fuel is extracted. Moreover, even diesel fuel from crude oil will cause far less pollution if bio-diesel additives are added. Not to mention the resulting revenue savings to those countries, which now don’t have to buy imported crude oil but instead develop their local agricultural industry by growing their own bio-fuel.
Currently, large - scale cultivation of Jatropha for bio-fuel purposes is still limited to some parts of India. But the plant’s hardy nature of thriving on land that’s too arid for staple food crops makes the large scale cultivation of Jatropha for the bio-fuel industry and other uses makes it a very eco-friendly enterprise. The practice is also socially responsible since Jatropha won’t be in competition with staple food crops. Thus staple food crop prices would remain stable. And Jatropha’s potential to reverse the effects of desertification could be tried in China where the effects of desertification is costing the country over 54 billion yuan annually. And a Jatropha bio-fuel industry in China could also help alleviate China’s chronic fuel shortage.
By: Vanessa Uy
With the controversy surrounding the use of staple food crops as a source of bio-fuels increasingly becoming a focus of a "media frenzy” for some time now. There might be a more Earth-friendly alternative without the unforeseen ecological impacts of genetically modified crops and the current “mono culture” based practice of intensified cultivation of a few species of staple food crops.
Jatropha, scientific name Jatropha podagrica also known as the physic nut, coral plant, gout plant, Buddha belly plant, is a plant which may hold such promise. Due to the plant’s ability to tolerate arid climates, fast growing and it’s usefulness for a variety of products, Jatropha can yield up to two tons of bio-diesel fuel per year per hectare. Put it another way, Jatropha can yield about 1,000 barrels of oil per year per square mile.
Basing on such relatively scant yield figures, Jatropha like other bio-fuels in general, is not yet an economically viable replacement to crude oil as a tradable commodity. But the plant’s other redeeming qualities like minimal requirement for irrigation and chemical fertilizers. And also a large field of Jatropha has the ability to stabilize or even reverse the effects of desertification means that growing the plant as a source of bio-fuel will not only be very eco-friendly but it will also not be in competition with staple food crops. And the plant is also a source of other products after the bio-fuel is extracted. Moreover, even diesel fuel from crude oil will cause far less pollution if bio-diesel additives are added. Not to mention the resulting revenue savings to those countries, which now don’t have to buy imported crude oil but instead develop their local agricultural industry by growing their own bio-fuel.
Currently, large - scale cultivation of Jatropha for bio-fuel purposes is still limited to some parts of India. But the plant’s hardy nature of thriving on land that’s too arid for staple food crops makes the large scale cultivation of Jatropha for the bio-fuel industry and other uses makes it a very eco-friendly enterprise. The practice is also socially responsible since Jatropha won’t be in competition with staple food crops. Thus staple food crop prices would remain stable. And Jatropha’s potential to reverse the effects of desertification could be tried in China where the effects of desertification is costing the country over 54 billion yuan annually. And a Jatropha bio-fuel industry in China could also help alleviate China’s chronic fuel shortage.
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