Abstract
The improvement of air good quality is a worldwide priority. The Kyoto Protocol, and the agreements achieved in the following process negotiation, have defined the LULUCF activities (land use, land use change, forestry) the industrialized countries have at disposal to reach the engagements of reduction of the climate emissions-changing. The CAP (Common Agricultural Policy) reform affirmed that the content of the policy will secure a multifunctional, sustainable and competitive agriculture throughout Europe. It will also be able to maintain the landscape and the countryside, make a key contribution to the vitality of rural communities and respond to consumer concerns and demands regarding food quality and safety, environmental protection and maintaining animal welfare standards. In regulation absence firms pollute into air CO2 without being held to pay a price of the service of assimilation of the greenhouse gases supplied from the agroforestry sector. The greater social efficiency of taxes than adopting reduction standard (as signed in the Kyoto Protocol) is demonstrated. In spite of that, the society has no general agreement on supporting farmers and the overcoming of practical problems following this policy remain as a narrow road. Despite the uncertainty of public policies, a practical purpose is then needed in sustainable forestry, considering the social advantage of financing afforestation, giving clear goals of being CO2 sinks.