Delhi Environment Minister Gopal Rai today said that the city government will work with neighbouring states and agencies concerned to prepare in advance to deal with the issue of poor air quality due to stubble burning in winters. <br />''<br />''The Minister made the remarks at the launch of a 17-day mega plantation drive. Thirty-one lakh saplings will be planted under the campaign Plant Saplings, Save Environment with the objective of increasing the national capital's green cover and reducing pollution.<br />''<span style="color: #222222;"><br />''The plantation drive is expected to increase the city's green cover from 325 square kilometres at present to 350 square kilometres by 2021, which will help reduce air pollution. The period will be observed as Vrikshaaropan Pakhavaada.</span><br />