山西省各市森林生态效益分析

山西农业大学本科毕业论文（设计）Analysis of forest ecological benefit in each city of Shanxi ProvinceABSTRACT:Because forest has not only direct value,but also huge indirect value,so the evaluation of forestecosystem service function is a hot spot in the research of forest ecosystem.Based on the two types of forestresources survey data of Shanxi Province in 2016,this paper selected seven indicators,including waterconservation,soil conservation,carbon fixation and oxygen release,forest accumulation of nutrients,purification of atmospheric environment,biodiversity protection and forest recreation,and used the method ofone-way ANOVA to divide 11 prefecture level cities into northern Shanxi,Central Shanxi and southem Shanxi.The ecosystem service function of main vegetation types in 11 prefecture level cities of Shanxi Province wasevaluated.The results showed that the forest ecosystem service function of different cities in Shanxi Province,from strong to weak,was in the order of southern Shanxi,Central Shanxi and Northern Shanxi,and there weresignificant regional differences only in carbon fixation and oxygen release.Through analysis,it is concludedthat the main factors that affect the difference of unit area matter quality are the structural composition offorest resources,climate factors and regional factors.KEY WORDS:Forest ecosystem services:Material quality:Mass per unit area2