Emergy Estimation of the Main Forest Biomass in Shangri-La,Tibetan Area of Yunnan Province

[Objectives]To calculate and study the biomass emergy of main forests in Shangri-La,Tibetan area of Yunnan Province.[Methods]Four main forest biomass values of P.likiangensis and A.georgei,P.densata,Q.aquifolioides and P.yunnanensis in Shangri-La,Yunnan were determined by emergy method.[Results]The energy of the four kinds of forests was 2572252.4906×106 J,the emergy was 10767.3366×1020sej,and the economic value was 43756.8411×0.1 billion yuan.The total economic value was 41.56 times of GDP and 5494.94 times of forestry output value in 2020;the emergy storage density was 9271.7959×1010 sej/m2,and the per capita emergy reserve was 741.2202×1016 sej/person;the per capita macro value was 30.122081 million yuan,which was 875.59 times that of the per capita GNP of 34402 yuan in 2020.[Conclusions]The value of forest ecological assets was mainly distributed in P.likiangensis and A.georgei in four main forests and arborous layer in vertical layer.The value of forest biomass in Shangri-La is much higher than that of developing forestry economy,and it is a valuable and potential asset.We should strengthen the protection of forest ecological environment and maintain forest assets.