T10 p4 sarbojeet jana

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LAKE-2010 paper presented at IISc,Bangalore.

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T10 p4 sarbojeet jana

  1. 1. Lake 2010: Wetlands, Biodiversity and Climate Change Theme 10: Impact of climate change on wetlandsT10_Poster_04 IMPACTS OF CLIMATE CHANGE IN WETLANDS Sarbojeet Jana Agricultural Engineering College & Research Institute, Kumulur, Tamil Nadu Agricultural University – 621712Changes in the atmospheric concentrations of GHGs and aerosols, land cover and solar radiation alter theenergy balance of the climate system and are drivers of climate change. As per the inter-Governmentalpanel on climate change (IPCC) report, global green house gas (GHG) emissions have grown by 70 %between 1970 and 2004 (4th IPCC Assessment Report, 2007).For Indian scenario, it has been predicted of a general trend of increase over West coast and northeastIndia. It has been estimated that there would be 20% rise in all India summer monsoon rainfall in futurescenarios except in Punjab, Rajasthan and Tamil Nadu which would show decrease in precipitation.Wetlands, estimated to cover about 6% of the earth’s terrestrial area provide invaluable services andbenefits for human populations including the regulation of climate. Climate change would threatenwetlands in a number of ways. Increased temperatures would adversely affect temperature sensitive plantand animal species. Decreased precipitation in wetlands would result in shrinkage of wetlandsconsequently releasing more carbon into atmosphere due to decay of organic matter. Climate change mayalso lead to shifts in the geographical distribution of wetlands. Moreover, wetlands are highly dependenton water levels, so changes in climatic conditions affecting water availability will influence the nature andfunction of specific wetlands including the type of plant and animal species. Climate change, therefore, isan important issue for wetland management. Conservation and wide use of wetlands can no longer beachieved without taking climate change into account.The present paper primarily brings out possible impacts due to climate change in relation to Ramsar sitesof Punjab (Harike, Kanjli, & Ropar). Initially there may be increased frequency and magnitude offreshwater floods due to melting of glaciers. Subsequently due to rising temperatures & less rainfall theremay be increased frequency and magnitude of droughts.22nd-24th December 2010

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