The Research On The Climate Comfort And Air Quality In Thousand-Island Lake

With the development of tourism,forestry eco-tourism have got more and more attention. Related research has important and significance,so it is necessary to carried out the study about the healthy resources in the forest ecosystem for the guidance of ecotourism and social economic. Taked laoshan forests as an example, this paper researched ecological health effects of 6 different kinds of forests(Pinus massoniana,Cyclobalanopsis chungli-Schima superba,Cyclobalanopsis chungli- Castanopsis sclerophylla,Castanopsis sclerophylla- Lithocarpus glabra,Cupressus funedris,Myrica rubra-Camellia sinensis) in Thousand Island Lake about the climte comfort and air quality. Climate comfort were appraised by environmental factors such as temperature, relative humidity and wind speed. Air quality were appraised by particulate matter (PM10) and the air negativeions, and those index were observed synchronously during the day (9:00-17: 00) throughout 4 seasons in 2010. Some preliminary conclusions were as follows by the research:1.①In natural forest communities,the comfortable climate was longest in summer and autumn, followed in spring and winter minimum, while in the artifical forest communities, it was longest in spring and summer, followed in autumn and winter minimum.②Among different communities, the comfort climate degree in artificial forest communities was higher than the natural forest communities in spring and summer, autumn and winter was the opposite;③In spring, the climate in 13:00 and 16:00 of Castanopsis sclerophylla- Lithocarpus glabra and 11:00-15:00 of Cupressus funedris,Myrica rubra-Camellia sinensis was comfort degree;In summer,all of 6 kinds of different forest communities was belong to comfort range;In natural forst communities comfortable level began to increase in antumn while it decreased in artifical forest communities;all of the forest communities fell on extremely comfortable range in winter.2.The concentration of PM10 appeard significant seasonal changes: higher in spring, lowest in summer and autumn, levels began to rise in autumn, and highest in winter.②In spring,summer and autumnn,PM10 in artificial forest kept high level in the morning and decressed during the day communities spring,while it change smoothly during the day in winter, the peak was not obviously.The concentrion curve of PM10 in natural forest communitise appeard"V-type"in spring and summer.PM10 concentrations was most stable in fall,and no obvious peak and valley; in winter, the PM10 concentrations showed the highest in the morning, and then began to decrease durning the day;③According to China's air quality standards (GB3095.1996), the PM10 concentrations in 6 kinds of forest communities achieved class-2 in spring while it were belong to class-1 in summer;in autumn ,all of these forest communities were belong to class-2 , except that Castanopsis sclerophylla- Lithocarpus glabra achieved class-1.3.①Negetive air anion was highest in summer,followed by autumn,lower in spring and winter.②the concentration curve of negetive air anion showed the"M-type"in spring and winter.In summer and autumn,the air of negative achieved the maximum value in the morning, and a second largest value appeared in afternoon;③As the air cleanness degree, the CI value was highest in summer, followed by autumn,lower in spring and winter.In the different communities,the air cleanness degree in natural communities was higher than artificial forest community.④Connection between environmental factors and anion appeard significant seasonal changes.Anion and climate factors had not significant correlation in spring but was significant correlated with temperature and relative humidity in summer and autumn:when the temperture lower than 16℃,anion was positive correlated with it,and anion was negetive correlated with it when the temperture between the 16℃-32℃;when the related humidity lower than 64%, anion was positively correlated with it and anion was negetive correlated with it when the related humidity between the 64%-96%;In autumn,anion was positive correlated with photon density;In winter it showed that anionwas less correlation with tenperture,related hunmidity and photon, but wind speed had significant influence on it.