The Social and Environmental Effects of Large Dams: A review of the literature |
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Page 42
... hectares were irrigated in 1960 , as of 1981 there were over 2,500,000 hectares irrigated . Expansion in irrigated areas has occurred throughout the continent : a large percentage of it in Sudan ; extensive areas in the Senegal and ...
... hectares were irrigated in 1960 , as of 1981 there were over 2,500,000 hectares irrigated . Expansion in irrigated areas has occurred throughout the continent : a large percentage of it in Sudan ; extensive areas in the Senegal and ...
Page 71
... hectares of the basin are cultivated , producing 40 per cent of the total national grain output and 35 per cent of the country's cotton . The area - which , in 1978 , had a population of 342 million - is also heavily industrialized ...
... hectares of the basin are cultivated , producing 40 per cent of the total national grain output and 35 per cent of the country's cotton . The area - which , in 1978 , had a population of 342 million - is also heavily industrialized ...
Page 164
... hectares under irrigation , even though the current irrigated acreage of 57 million hectares could produce the same output if current yields of 2 to 3 tons per hectare were doubled to a level comparable to irrigated yields in China ...
... hectares under irrigation , even though the current irrigated acreage of 57 million hectares could produce the same output if current yields of 2 to 3 tons per hectare were doubled to a level comparable to irrigated yields in China ...
Common terms and phrases
acres agricultural annual Aswan Aswan Dam Aswan High Dam authors note benefits canal caused cent Chapter construction cost countries crops cultivation dam projects delta describes displaced downstream drainage economic Effects of Large engineering environment Environmental Effects environmental impact erosion estimated farmers fish fisheries flood control floodplain flow forest Government groundwater hectares High Dam hydro hydroelectric hydropower impoundment increase India irrigated land irrigation irrigation schemes irrigation systems jects Kariba Dam Lake large dams large-scale loss Mahaweli major ment metres million Narmada oustees perennial irrigation planning population problems production proposed qanats Reclamation region reservoir resettlement result River Basin salinisation salinity Sardar Sarovar Sardar Sarovar projects schistosomiasis sediment seismicity Senegal River silt Social and Environmental soil soil salinization Tehri Dam Three Gorges tion traditional tribal Valley villages Wadebridge water development water projects water resources water transfer waterlogging wildlife words World Bank