The wetlands are the hotspots of biodiversity, act as carbon sinks, act as buffers against floods and are essential for groundwater recharge. With groundwater reservoirs in the country heavily exploited, this last function has assumed greater importance. http://www.hindustantimes.com/environment/centre-notifies-wetland-rules-environmentalists-unhappy/story-3MoGp9D8eSzHI90zfOXWSO.html
Wetlands can be defined as lands transitional between terrestrial and aquatic eco-systems where the water table is usually at or near the surface or the land is covered by shallow water.
But they are threatened by reclamation and degradation due to activities like drainage and landfill, pollution, hydrological alteration (water withdrawal and changes in inflow and outflow), over-exploitation resulting in loss of biodiversity and disruption in ecosystem services provided by them.
There are at least 115 wetlands that are officially identified by the central government and of those 26 are identified as wetlands of international importance under Ramsar Convention which is an international intergovernmental treaty for conservation of wetlands. India is a party to the treaty. http://www.livemint.com/Politics/y6Tr3tkrr3q28AmGKaBFII/Environment-ministry-notifies-new-wetland-rules.html
The Centre on September 26 notified a new set of rules under the head Wetlands (Conservation and Management) Rules, 2017 replacing the Wetlands (Conservation and Management) Rules, 2010. http://www.thehindu.com/news/national/kerala/new-wetland-conservation-rules-notified/article19779100.ece
It is worth to mention that under the 2010 rules, not a single water body was notified as a wetland over and above the ones already recognised as such by the Centre and the Ramsar Convention, defeating its purpose in a way. http://www.zeebiz.com/agencies/centre-notifies-new-rules-for-preservation-of-wetlands-26312
Similarly, despite country’s space agency ISRO had in 2011 mapped over two lakhs of wetlands across the country, the centre has, so far, notified only 115 wetlands and 63 lakes in 24 states and 2 UTs for conservation and management.