I just came across your mail which went unreplied by me. Sorry. For your query, the quota level was fixed by Kyoto protocol. As per this, planting trees on 1 lakh hectares could remove 1 million tonne carbon from the atmosphere globally. So it means that India has a great role to play and it has been estimated that nearly $100 billion can be reaped by India by the year 2010. But still the momentum has not gained in our country on this topic and so too the popularity. To my knowledge ITC group is showing enormous interest in this field.