The Study Of Service Function Evaluation Of Forest Ecological System In Saihanba Nature Reserve

The ecosystem service function refers to the ecosystem and ecologicalprocesses that form and maintain human survival of the natural environmentalconditions and their effectiveness. As a kind of natural resources in the humansurvival and the life plays an irreplaceable ecosystem service function. Therefore, allcountries in the world to carry out a wide range of forest ecosystem service functionvalue assessment study.Based on the service function of the forest ecosystem, the connotation,classification and research progress of assessment methods based on, in Saihanbanatural protection area as the study area, and the application of value assessmentmethod, lists the forest growth value, recreational value, water conservation value ofsoil conservation value, fattening, carbon fixation and oxygen release value, thevalues of air purification, biodiversity, scientific research value of eight referencevolume, calculation and stayed with rare dam Nature Reserve in2006the value ofecological service function.In Saihanba nature reserve ecological service function value in2006is1632921000yuan, direct value is89061000yuan, accounting for5%of the total valueof the service function, the indirect value of1543860000yuan, accounting for95%ofthe total value of the service function.The forest growth for the price of7859000yuan, recreational function value is81202000yuan, water conservation function value is9120000yuan, and soilconservation fattening function value is30190000yuan, releasing oxygen nitrogenfixation function value is155870000yuan, air purification function and value of122664000yuan, the biodiversity value is1221120000yuan, scientific research andcultural value of4896000element.The author in2006the value of ecological service function based on theprinciple of system dynamics and vensim-ple software in windows on Saihanba naturereserve for the next20years the forest ecological service function value of simulation,draw: Saihanba nature reserve forest ecosystem service function value in2006is2445352000yuan. Direct value is129560000yuan, accounting for5%of the totalvalue of the service function, the indirect value of2315792000yuan, accounting for95%of the total value of the service function.The forest growth for the price of11411000yuan, recreational function value is118149000yuan, water conservation function value is13479000yuan, and soilconservation fattening function value is41541000yuan, releasing oxygen nitrogenfixation function value is221490000yuan, air purification functionalvalue,170871000yuan, biodiversity value is1862208000yuan, scientific research andcultural value of6203000element.