Explain the ecological problems being faced due to multi purpose river valley projects? it is a long answer question. so please answer accordingly
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Answer:
The benefits provided by forest ecosystems include: goods such as timber, food, fuel and bioproducts. ecological functions such as carbon storage, nutrient cycling, water and air purification, and maintenance of wildlife habitat… .
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Answer :-
(1) Dams fragment rivers making it difficult for aquatic fauna to migrate especially for spawning.
(2) The reservoirs that are created on the floodplains also submerge the existing vegetation and soil leading to its decomposition over a period of time.
(3) Multi-purpose projects that were constructed to control floods have triggered floods which cause extensive soil erosion.
(4) Sedimentation also meant that the floodplains were deprived of silt, a natural fertilizer, thriller adding on to the problem of land degradation.
(5) Multi-purpose projects induced earthquakes, caused water borne diseases and pests and Pollution resulting from excessive use of water.