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LATEST NEWS UPDATES | Latest wetland mapping data underscores the need to step up conservation action -Ritesh Kumar

Latest wetland mapping data underscores the need to step up conservation action -Ritesh Kumar

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published Published on Jul 11, 2022   modified Modified on Aug 2, 2022

-India.Mongabay.com

* India’s 2022 Wetlands Change Atlas mapped 231,195 wetlands, covering 4.86 percent of the country’s geographical area. The Atlas concluded that the number and extent of these wetlands have increased during the 2006/7-2017/18 period.

* Given that mapping wetlands is a complex task, 2022 Atlas likely presents the lower bound of the actual wetland extent in the country and the overall number is higher than what is recorded.

* It is high time that the wetlands mapping exercises graduate into a National Wetland Inventory Programme, which can, based on the extent and environmental condition of wetlands, be used for decision-making on wetlands protection, management and restoration, writes Ritesh Kumar in this commentary.

* The views in this commentary are that of the author.

On World Wetlands Day this year on February 2, the Ministry of Environment, Forest and Climate Change (MoEFCC), Government of India, released the National Decadal Wetlands Change Atlas (2022 Atlas). Published by the Space Application Center (SAC), the 2022 Atlas provides data on wetland number and extent in 2017-18 and an assessment of change in data since 2006-7 which was recorded in the National Wetlands Atlas 2011. In a marked improvement from the previous iteration, the 2022 Atlas also presents basin-wise and biogeographic zone-wise information on wetlands distribution and extent.

Much ground has been covered since the time wetlands inventories were prepared using questionnaire surveys, first initiated in the eighties, leading to the Directory of Wetlands published by MoEFCC in 1989. In 1998, the first satellite-data-based national wetlands inventory using remote sensing images of 1992-93 was published, pegging the extent of wetlands in India at 7.58 million hectares. The 2022 Atlas uses IRS Resourcesat-2/2A LISS III satellite data to map wetlands.

Natural wetlands are declining, human-made wetlands are increasing

The 2022 Atlas concludes that the number and extent of wetlands having areas equal to or greater than 2.25 hectares (ha) have increased during the 2006/7-2017/18 period. The Atlas maps 231,195 wetlands (having an area equal to or greater than 2.25 ha) spanning 15.98 million hectares (4.86 percent of the country’s geographical area). In the 2006/7, 212,385 wetlands (>=2.25 ha) spanning 15.34 million ha were reported. Thus, the assessment concludes that in a decade, the number of wetlands has increased by 18,810, and the area by 0.64 million ha.

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India.Mongabay.com, 11 July, 2022, https://india.mongabay.com/2022/07/commentary-latest-wetland-mapping-data-underscores-the-need-to-step-up-conservation-action/?fbclid=IwAR2QsDm6rDRoSl0_jmqh6ywj_0gRN0aFSNk6yRCO74aQA9lJRdxOEW544W4


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