Study On The Comprehensive Evaluation Of The Policy&Mechanism System In Forestry Sector Of China In Terms Of Response To Global Climate Change

The issue of global climate change is not only a hot issue and one of the focuses in current international society, but also a major issue related to China’s sustainable economic and social development. Forestry plays an important role in response to global climate change.In the context of large number of policies and mechanisms about responses to climate change in forestry field are promulgated and implemented, it is necessary to make an comprehensive evaluation of theses policies and mechanisms, based on scientific theories and using practical method.The comprehensive evaluation can provide bases for decision making, assist the improvement and optimization of these policies and mechanisms, and impel forestry sector to perform it’s function in climate change field more better.The bases of the comprehensive evaluation is the sustainable development theory, low carbon economy theory, ecological compensation theory, and system theory. First, study the functions, structure,system characteristics, and coupling mechanism of the forestry composite system in terms of reacting to global climate change. Second,configure the policies and mechanisms of forestry response to climate change into a system. Third, design the evaluation indexes system and comprehensive evaluation models. Forth, make a comprehensive evaluation of the policy and mechanism system of response to global climate change in forestry sector of china,and offer suggestions for the adjustment and improvement of related policies and mechanisms.A variety of forestry activities coupled with synergies constitute a complex system under the context of reacting to climate change. This complex system is also a typical dissipative system, there is a spontaneous tendency of entropy increase. Therefore designing the right system structure(operating mechanism) and management model(dynamic and constraint mechanisms) to coordinate and manage external and internal relations of the complex system can bring about the entropy decrease,and offset the entropy increase of the system itself, and make the system always be in an orderly dissipative structure state, and evolve constantly.This is beneficial to forestry sector to perform it’s function in climate change field.The policy and mechanism system of forestry response to climate change comprises operating mechanism, dynamic mechanism, and constraint mechanism. Forest carbon sink, carbon storage and carbon substitution is the main operating mechanism, these three operating mechanisms coupled together into a composite system. Accurately evaluating the relationship between the three operating mechanism, and on this basis inputting constantly a negative entropy stream into this composite system through a variety of dynamic and constraint mechanisms can make a help to promote the coupling and collaborative coexistence of this composite system,and make this composite system shows out an co-evolution trends. This is helpful to exert the functions of forestry in terms of response to global climate change.The designed evaluation indexes system is composed of4levels,3big modules,12principles, and19input indexes and21output indexes, and the comprehensive evaluating models is designed based on DEA, and gray dynamic model. The overall efficiency level, coordination state, and the direction as well as degree of the impact factors of the policy and mechanism system of forestry response to climate change can be reflected accurately through the comprehensive evaluation. According to the results of the comprehensive evaluation, for forestry sector, to react to global climate change more effectively lies in the further performing of the functions of carbon sink, carbon storage, and carbon substitution, and the further improvement and optimization of the dynamic and constraint mechanism systematically.