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One would be myopic to consider that those who address 'progress and development', keeping in view the environmental impact and human costs, are 'nincompoops'.
The presbyopic are those who look at 'progress and development' in terms of dollars, cents and yuans and not in terms of human and environmental costs.
To believe that creating dams and industry is positive development is a rather lopsided and dull witted manner of addressing progress.
Progress is indeed essential, but it has to be cost productive in a holistic manner.
The fact that China is now spending huge sums on battling smog and foul air related diseases due to industrialisation is hardly progress without a heavy cost. China's pollution costs $112B in annual health care (http://content.usatoday.com/communi...r-pollution-hikes-health-costs/1#.Unc7JfnI0a8).
What are the human costs when Dams are constructed?
The Jinsha River Valley & the drainage is as below:
It may be worthwhile to read this
Decade River Project 2010 (7) Environmental Impact Assesment on the Jinsha River
http://eng.greensos.cn/Content.aspx?articleId=1163&c=78
The General impacts of dams are as below.
Villages are lost and so are farmlands and areas on which locals are dependent on their livelihood.
Would compensation (and it is never fair) be adequate? What about a livelihood means? Would it be possible for a farmer to suddenly become a factory hand and have the same expertise or job satisfaction as having been a successful farmer or a fisherman? What would be the mental trauma of a successful and well to do farmer being saddled as a second rate helping hand in a factory, on a paltry pay and being continuously yelled at for incompetence?
What about the immediate family of the displaced farmer? Would they find jobs that match their skills or would they too be a square peg in a round hole and be satisfied at being taken to be rustic dolts? And the education of the children.
What about the social effects of having lived with neighbours known for ages and being cast asunder? What about the debts that have to be paid to locals or collecting money from the loans that given to others? Those who are not aware of dislocations would not understand the huge social disarray displacement causes, and therefore satisfy themselves with the 'benefits' and razzle dazzle that 'progress and development' promises to bring.
The other effects that have serious repercussions on the national ecology and economy are as below.
What is missed out is that the dam wall itself blocks fish migrations, which in some cases and with some species completely separate spawning habitats from rearing habitats. The dam also traps sediments, which are critical for maintaining physical processes and habitats downstream of the dam (include the maintenance of productive deltas, barrier islands, fertile floodplains and coastal wetlands).
Another significant and obvious impact is the transformation upstream of the dam from a free-flowing river ecosystem to an artificial slack-water reservoir habitat. Changes in temperature, chemical composition, dissolved oxygen levels and the physical properties of a reservoir are often not suitable to the aquatic plants and animals that evolved with a given river system. Indeed, reservoirs often host non-native and invasive species (e.g. snails, algae, predatory fish) that further undermine the river's natural communities of plants and animals.
The alteration of a river's flow and sediment transport downstream of a dam often causes the greatest sustained environmental impacts. Life in and around a river evolves and is conditioned on the timing and quantities of river flow. Disrupted and altered water flows can be as severe as completely de-watering river reaches and the life they contain. Yet even subtle changes in the quantity and timing of water flows impact aquatic and riparian life, which can unravel the ecological web of a river system.
A dam also holds back sediments that would naturally replenish downstream ecosystems. When a river is deprived of its sediment load, it seeks to recapture it by eroding the downstream river bed and banks (which can undermine bridges and other riverbank structures, as well as riverside woodlands). Riverbeds downstream of dams are typically eroded by several meters within the decade of first closing a dam; the damage can extend for tens or even hundreds of kilometers below a dam.
Riverbed deepening (or "incising") will also lower groundwater tables along a river, lowering the water table accessible to plant roots (and to human communities drawing water from wells) . Altering the riverbed also reduces habitat for fish that spawn in river bottoms, and for invertebrates.
In aggregate, dammed rivers have also impacted processes in the broader biosphere. Most reservoirs, especially those in the tropics, are significant contributors to greenhouse gas emissions (a recent study pegged global greenhouse gas emissions from reservoirs on par with that of the aviation industry, about 4% of human-caused GHG emissions). Recent studies on the Congo River have demonstrated that the sediment and nutrient flow from the Congo drives biological processes far into the Atlantic Ocean, including serving as a carbon sink for atmospheric greenhouse gases.
Large dams have led to the extinction of many fish and other aquatic species, the disappearance of birds in floodplains, huge losses of forest, wetland and farmland, erosion of coastal deltas, and many other unmitigated impacts.
Variations in moisture percentage, temperature and air body movements of air caused by the big stationary water body differentiate microclima related to region topography. In addition, regional scaled climatic changes can be observed. These alterations may seem not very harmful for human health, but they are notable for many plants and animals. Their secondary effects influence human being.
Progress and development is necessary, but it also requires to be carefully chalked out.
For those who do not understand the human cost and trauma, it is advised that they may seen the Bengali film 'Subarnarekha' directed by the famed Ritwick Ghatak appended below. It is heart wrenching and real!
It has English subtitles.
The presbyopic are those who look at 'progress and development' in terms of dollars, cents and yuans and not in terms of human and environmental costs.
To believe that creating dams and industry is positive development is a rather lopsided and dull witted manner of addressing progress.
Progress is indeed essential, but it has to be cost productive in a holistic manner.
The fact that China is now spending huge sums on battling smog and foul air related diseases due to industrialisation is hardly progress without a heavy cost. China's pollution costs $112B in annual health care (http://content.usatoday.com/communi...r-pollution-hikes-health-costs/1#.Unc7JfnI0a8).
What are the human costs when Dams are constructed?
The Jinsha River Valley & the drainage is as below:
It may be worthwhile to read this
Decade River Project 2010 (7) Environmental Impact Assesment on the Jinsha River
http://eng.greensos.cn/Content.aspx?articleId=1163&c=78
The General impacts of dams are as below.
Villages are lost and so are farmlands and areas on which locals are dependent on their livelihood.
Would compensation (and it is never fair) be adequate? What about a livelihood means? Would it be possible for a farmer to suddenly become a factory hand and have the same expertise or job satisfaction as having been a successful farmer or a fisherman? What would be the mental trauma of a successful and well to do farmer being saddled as a second rate helping hand in a factory, on a paltry pay and being continuously yelled at for incompetence?
What about the immediate family of the displaced farmer? Would they find jobs that match their skills or would they too be a square peg in a round hole and be satisfied at being taken to be rustic dolts? And the education of the children.
What about the social effects of having lived with neighbours known for ages and being cast asunder? What about the debts that have to be paid to locals or collecting money from the loans that given to others? Those who are not aware of dislocations would not understand the huge social disarray displacement causes, and therefore satisfy themselves with the 'benefits' and razzle dazzle that 'progress and development' promises to bring.
The other effects that have serious repercussions on the national ecology and economy are as below.
What is missed out is that the dam wall itself blocks fish migrations, which in some cases and with some species completely separate spawning habitats from rearing habitats. The dam also traps sediments, which are critical for maintaining physical processes and habitats downstream of the dam (include the maintenance of productive deltas, barrier islands, fertile floodplains and coastal wetlands).
Another significant and obvious impact is the transformation upstream of the dam from a free-flowing river ecosystem to an artificial slack-water reservoir habitat. Changes in temperature, chemical composition, dissolved oxygen levels and the physical properties of a reservoir are often not suitable to the aquatic plants and animals that evolved with a given river system. Indeed, reservoirs often host non-native and invasive species (e.g. snails, algae, predatory fish) that further undermine the river's natural communities of plants and animals.
The alteration of a river's flow and sediment transport downstream of a dam often causes the greatest sustained environmental impacts. Life in and around a river evolves and is conditioned on the timing and quantities of river flow. Disrupted and altered water flows can be as severe as completely de-watering river reaches and the life they contain. Yet even subtle changes in the quantity and timing of water flows impact aquatic and riparian life, which can unravel the ecological web of a river system.
A dam also holds back sediments that would naturally replenish downstream ecosystems. When a river is deprived of its sediment load, it seeks to recapture it by eroding the downstream river bed and banks (which can undermine bridges and other riverbank structures, as well as riverside woodlands). Riverbeds downstream of dams are typically eroded by several meters within the decade of first closing a dam; the damage can extend for tens or even hundreds of kilometers below a dam.
Riverbed deepening (or "incising") will also lower groundwater tables along a river, lowering the water table accessible to plant roots (and to human communities drawing water from wells) . Altering the riverbed also reduces habitat for fish that spawn in river bottoms, and for invertebrates.
In aggregate, dammed rivers have also impacted processes in the broader biosphere. Most reservoirs, especially those in the tropics, are significant contributors to greenhouse gas emissions (a recent study pegged global greenhouse gas emissions from reservoirs on par with that of the aviation industry, about 4% of human-caused GHG emissions). Recent studies on the Congo River have demonstrated that the sediment and nutrient flow from the Congo drives biological processes far into the Atlantic Ocean, including serving as a carbon sink for atmospheric greenhouse gases.
Large dams have led to the extinction of many fish and other aquatic species, the disappearance of birds in floodplains, huge losses of forest, wetland and farmland, erosion of coastal deltas, and many other unmitigated impacts.
Variations in moisture percentage, temperature and air body movements of air caused by the big stationary water body differentiate microclima related to region topography. In addition, regional scaled climatic changes can be observed. These alterations may seem not very harmful for human health, but they are notable for many plants and animals. Their secondary effects influence human being.
Progress and development is necessary, but it also requires to be carefully chalked out.
For those who do not understand the human cost and trauma, it is advised that they may seen the Bengali film 'Subarnarekha' directed by the famed Ritwick Ghatak appended below. It is heart wrenching and real!
It has English subtitles.
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