Research Frontier and Prospect of Forest Management Decision-Making Methodology Based on Generalized Faustmann Model
Sustainable forest management and related optimal rotation decision are important ways to mitigate global climate change.Due to the basic assumption of the classical Faustmann model that all parameters are consistent in different rotation cycles cannot be satisfied,it is necessary to explore the optimal rotation decision-making problem under the influence of multiple factors based on the generalized Faustmann model.This study focuses on the generalized Faustmann model,summarizes its theoretical expansion and frontier application,and analyses the research frontier of the generalized Faustmann model in sustainable forest management decision-making methodology.The research finds that:1)The generalized Faustmann model has been expanded in four directions,carbon sequestration benefits,uneven-aged forest management,natural risk and tax policy,among them,the land expectation value and the corresponding first-order conditions for profit maximization can help forest owners to formulate a reasonable forest management plan.2)By using the generalized Faustmann model,the quantity growth rate,quality growth rate and price growth rate in the Pressler indicator rate can be specified,it allows forest owners to make decision in advance in conjunction with their own risk preferences to decide whether to cut the stand in the current year.3)The land value and timber value of the forest can be clearly distinguished under the generalized Faustmann model,so that when transferring an immature forest,the accurate valuation of forest land and timber can be achieved,and their respective tax rates can be determined under different tax policies.The extension direction of the generalized Faustmann model in the future optimal rotation decision-making research also includes the following aspects:1)Expanding carbon sequestration benefits from aboveground biomass carbon pool to complete forestry carbon pools.2)Expanding tax policies from foreign policies to the forestry tax and fee system with Chinese characteristics.3)Extending model assumptions from deterministic environments to stochastic environments.4)Expanding the research scale from stand-level to forest-level.5)Expanding ecological benefits from carbon sequestration benefits to forest ecosystem services.