公园空气负氧离子及PM_(2.5)浓度变化特征与影响因素研究——以虎头山森林公园为例

Characteristics and Influencing Factors of Air Negative Oxygen Ion and PM_(2.5) Concentration in Park——A Case Study of Hutou Mountain Forest Park

为了研究三明市区周边的森林康养环境,以福建省三明市虎头山森林公园为研究对象,监测其负氧离子及PM_(2.5)浓度,研究了该森林公园的负氧离子及PM_(2.5)浓度时空分布规律及影响因素。结果表明:虎头山地区的负氧离子浓度各个季节,最低值都大于3000个/cm~3,符合森林公园的负氧离子要求;各样点PM_(2.5)浓度含量分季节表现为:冬季PM_(2.5)的含量为30~50μg/m~3,而其他季节的PM_(2.5)含量在20μg/m~3左右,虎头山地区的冬季PM_(2.5)浓度远高于其他季节;结合气温与湿度可以看出,4个季节中,由于冬季气温过低、空气PM_(2.5)含量略高于其他三季,故冬季的康养性和游玩性低于其他3个季节;春、夏、秋3个季节则是具有高负氧离子浓度、适宜气温和适宜湿度,是虎头山游憩功能效益最好的3个季节,非常适合森林康养旅游业的发展。故虎头山的空气负氧离子与PM_(2.5)含量符合森林康养的要求,可以满足游客放松、养生、游憩的生态需求和精神修养。

In order to study the forest health environment around Sanming,the Houtou Mountain Forest Park in Sanming City,Fujian Province,was selected as the research object.The concentrations of negative oxygen ion and PM_(2.5) were monitored.The spatial-temporal distribution of negative oxygen ion and PM_(2.5) concentration and its influencing factors were studied.The results show that the lowest value of negative oxygen ion concentration in Houtou Mountain area was more than 3000/cm~3,which meets the requirement of negative oxygen ion in Forest Park;the concentrations of PM_(2.5) in winter ranged from 30~50 μg/m~3,while in other seasons the concentrations were around 20 μg/m~3;the concentration of PM_(2.5) in winter was much higher than that in other seasons;combined with the air temperature and humidity,it can be seen that in the four seasons,due to the low temperature in winter,PM_(2.5) content was slightly higher than the other three seasons,so the benefits of wellness and the playfulness in winter was lower than the other three seasons;spring,summer and autumn were the three seasons with high negative oxygen ion concentration,suitable temperature and humidity,which were the three seasons with the best recreation function benefit.Therefore,the content of negative oxygen ion and PM_(2.5) in the air of Hutou Mountain is in line with the requirements of forest health,and can meet the ecological needs and spiritual cultivation of tourists for relaxation,health preservation and recreation.