Evaluation of Forest Ecological and Economic System in Heilongjiang Based on the Emergy Analysis

In recent years, the forest resources were more scarce, forest ecological and economic system was severely damaged, so that sustainable development becomes a difficult problem. Using emergy analysis as theory support, the paper proposed the emergy index system for sustainable development of forests economical and ecological system, based on a lot of data, it used emergy methods to value the state of Heilongjiang forests ecological and economic system and analyzed the state of system from the view of System resources inputs: based on sustainable development. it calculated the capacity for sustainable development of Heilongjiang forest ecological and economic system and evaluated changes in the system of sustainable development of Heilongjiang forest ecological and economic system in the past 10 years from the dynamic point view. so that we can evaluate the development situation of Heilongjiang forest ecological and economic system objectively and truly.