Study On Emergy Measurement And Its Application In The Pilot Area Of Nanshan National Park

Since 2015,Zhejiang,Beijing.Fujian,Hunan,Jilin,Hubei,Yunnan,Qinghai,Heilongjiang provinces have been selected as the pilot of Chinese national park system for three year.That initiative aims to further improve management system in protected fields,make the classification of protected fields more reasonable and scientific protection,and strengthen protection of protected fields,thus achieving a natural ecosystem and cultural&natural heritage of the country,surviving for generations,and shared by the people.The present study,taking Nanshan national park system pilot area in Hunan for instance,constructs the emergy input-output index system for Nanshan national park system pilot area through emergy theory,compiles the total emergy input and output of that pilot area's ecosystem in 2010-2014,as well as compares the emergy input-output and development trend during that five years.The major emergy input-output indexes of that pilot area's ecosystem are calculated.On this basis,from the aspect of emergy sustainability index and data envelopment analysis(DEA model),this study makes a comprehensive evaluation to the sustainable development and ecological efficiency for ecosystem in pilot area of Nanshan national park system.Finally,from on the perspective of emergy,this paper accounts ecosystem service value of pilot area of Nanshan national park system.The study showed that the total inputed emergy in ecological system of Nanshan national park system pilot is,and the total outputed value is in 2014.The total outputed emergy is positive number and more than the total inputed.Input and output presented the general trend of sustainable growth.From the aspect of sustainable development,ecosystem of Nanshan national park system pilot area is in a state of sustainable development and has definite economic vitality and development potential,but with slightly insufficient in economic vitality.From the aspect of ecosystem services in Nanshan national park system pilot area,the value of ecological service is,which isfar more than the total inputed and outputed emergy.This results showed that the ecological service value of ecosystem in Nanshan national park system pilot area is far more than that of the economic input and output value,and has very high value of ecosystem services,as well as the well ecological system on the construction of national park.Then explained that the significance to protect the integrity of ecological system and the biodiversity in Nanshan.It is an important task for the construction of the national park to have a sustainable development.