Study On Health Functions Of Typical Forest Communities In Qishan Mountain Of Fuzhou

Suburban eco-tourism is the way change from a long-distance tours to close recreation,has increasingly become the fashion and common household preferred way.So the suburban forest ecological benefit evaluation has important significance in the scientific understanding of forest health functions,diagnostic interpretation of forest use,maintenance of ecological balance.In this study,cedar forest and evergreen broad-leaved mixed forest were as objects in Fujian Province Qishan Forest Park,the study included diurnal and seasonal variation environmental factors of these two typical forest communities and compared with Fuzhou Wuyi Square about volatile organic compounds,concentrations of particulate matter and Oxygen concentration.Evaluated Comprehensively ecological benefits and health functions of forest communities combined with animal testing.The main conclusions were as follows:1.The cedar forest and evergreen broad-leaved mixed forest Qi shan Forest Park had tremendous ecological health functions and they were Suitable for public recreation,beneficial to human health by alleviating the urban heat island,Warming effect and Lowering humidity,Improving human comfort,Increasing the degree of oxygen-enriched air and releasing beneficial volatiles to humans and so on.2.The environmental factors had a significant seasonal variation and different forest communities existed distinct.(1)Integrated human comfort index expressed as Winter>autumn>Spring>Summer.(2)PM 10 and TSP had a similar seasonal variation In each forest communities,the Concentrations were in Evergreen broad-leaved mixed forest the order of summer>spring>autumn>winter,the Concentrations were in cedar forest the order of autumn>winter>summer>spring,PM2.5 concentrations Evergreen broad-leaved mixed forest were in highest autumn,the lowest in winter,while in cedar forest showed the highest in winter,lowest in spring.(3)Seasonal changes of air oxygen:two plant communities had shown summer>spring>autumn>winter.(4)The concentration of volatile compounds beneficial to humans was highest in summer.3.Diurnal variation of different environmental factors was different in different seasons.(1)Uncomfortable state period was less in summer and spring,The most comfortable time concentrated in 7:00 to 19:00,Uncomfortable and very uncomfortable state period were more in Winter and Autumn.(2)Diurnal variation trends of TSP and PM 10 was Similar,Diurnal variation of PM2.5 and PM1 had small differences.(3)The air oxygen content diurnal variation in two forest communities consistented with the variation of light intensity,showed "unimodal"trend and the highest point appeared at 13:00 or 15:00,the lowest point appeared 5:00 or 7:00 in the morning.(4)The highest concentrations of volatile organic compounds concentrated in 11:00-21:00,the the characteristic of TVOCs was that the day Concentration was higher than night in the spring and summer and winter,The concentration of volatile organic compounds was not obvious in the autumn.4.They were close relationship between environmental factors in forest communities environment.Each particle particle concentration was significantly correlated linearly,TSP and PM10 had highest correlation.In different seasons,concentrations between different particle concentrations and meteorological factors were different.Path analysis results illustrated that PM 10 showed the greatest direct positive effect for TSP,PM2.5 showed the greatest indirect positive effect for TSP,Light intensity were a limiting factor for TSP concentration,TSP was a major controlling factor for PM10 and PM2.5,PM10 and temperatures were the enhancement factor s for PM2.5,Air temperature and the release of plant volatiles were controlling factors for the air oxygen content.5.The integrated environmental health index value(FEHI)was not significant in two kinds of forest communities,the highest in summer and lowest in winter,but FEHI was not significantly different in spring and fall,They had a beneficial effect on human health.The higher frequency of the low health index points appeared in between 17:00-19:00,Three seasons of spring and autumn and summer on human health favorable periods was longer than in winter.The results based on open-field test showed that two forest communities environment can help improve the total distance movement,the central grid movement,the times crossing central grid,stand numbers and weight,reduced the time of activity corners and defecation.Two forest communities environment help improve the mice excitability,Increased the cognitive ability of mice,relieved anxiety,relaxed spirit and appetite had been greatly improvedFinally,some suggestions and direction through a comprehensive evaluation and animal testing,were put forward.(1)Forest Trail was constructed which could be applied to public recreation In forest communities.(2)Qishan Forest Park could properly carry out the planning and design of forest bathing.(3)Strengthen the integration of multidisciplinary widen in future studies.(4)Cover wider weather conditions in future studies.(5)Establish an animal test model.(6)Build a long-term automatical monitoring sites.