摘要
空气负离子(NAI)浓度是衡量森林康养效益的重要指标。为了揭示NAI浓度的影响机制,本研究在沁源太岳山区选取4个不同类型的森林康养村落为研究对象,并以沁源县城为对照,采用便携式空气负离子仪于2021年7月选择晴朗天气开展NAI浓度和气象因素的监测。结果显示:(1)湿地森林类型(王家湾村)的NAI浓度最高,其油松+辽东栎混交林下样点浓度值区间为250.0~1262 ions/cm^(3),均值达到829.1 ions/cm^(3);其次是低山森林类型(黑峪村),其落叶松林缘带样点NAI浓度区间为189~1100 ions/cm^(3),均值为601.3 ions/cm^(3);沁源县城的对照样点最低,其日晷广场绿地样点NAI浓度值区间为181.5~570.2 ions/cm^(3),均值为438.6 ions/cm^(3)。因此,NAI浓度分布特征大致为森林空间>水体空间>开阔空间。(2)不同森林康养村落的NAI浓度日变化规律并不一致,其中湿地森林类型(王家湾村)和低山森林类型(黑峪村)的NAI浓度日变化大致呈“U”型,即早晨700—800浓度最高,然后逐渐下降,在1200—1500达到最低,但是在1700—1800又开始上升;亚高山草甸类型(花坡村)的NAI浓度呈单峰型,峰值出现在1000—1100时段,然后逐渐下降,并在1200—1500时段达到最低值;低山草甸类型(五龙川村)则存在2个峰值,分别是900—1000时段和1500—1600时段。(3)多元线性回归分析发现,空气温度和相对湿度是影响NAI浓度的主要因素,且存在正向影响,而PM;和PM;存在一定的负向影响。
The negative air ions(NAI)concentration is an important index to measure the benefits of forest wellness.In order to study the influence mechanism,this study selected 4 different types of forest villages as objectives and the county town as control in Taiyue Mountain of Qinyuan County.We used air anion meter(ONETEST-502-XP-A)to survey the NAI concentration and other meteorological index at sunny weather in July 2021.The results showed that:(1)The highest value of NAI concentration was the wetland forest type(Wangjiawan Village),that the values of Pinus tabuliformis+Quercus liaotungensis point were between 250.0-1262 ions cm/cm^(3) and average value of 829.1 ions/cm^(3);followed by the forest type(Heiyu Village)at larch edge zone point,with interval value between 189-1100 ions/cm^(3)and average value of 601.3 ions/cm^(3).The lowest value of NAI concentration was control points(Qinyuan County),that the average value of sundial square was 438.6 ions/cm^(3),with interval value between 181.5-570.2 ions/cm^(3),respectively.(2)The diurnal variation trend of NAI concentration in different villages were not consistent.The diurnal variation trend of NAI concentration in wetland forest type(Wangjiawan Village)and forest type(Heiyu Village)were relatively similar with“U”shape roughly,with the highest from 7:00 to 8:00 in the morning,then gradually decreased,reached the lowest from 12:00 to 15:00,but started to rise from 17:00 to 18:00;the subalpine meadow type(Huapo village)appeared the highest value in the period from 10:00 to 11:00,and also reached the lowest value in the period from 12:00 to 15:00,which generally showed single peak;the low mountain meadow type(Wulongchuan village)had two peaks,which were 9:00 to 10:00 and 15:00 to 16:00,respectively.(3)Multiple linear regression analysis showed that air temperature and relative humidity are the main factors affecting NAI concentration,and there was a positive impact,meanwhile PM;and PM;have a certain negative impact.
作者
崔虎亮
李仲昊
曹如姬
CUI Hu-liang;LI Zhong-hao;CAO Ru-ji(College of Architecture,Taiyuan University of Technology,Taiyuan Shanxi 030024,P.R.China)
出处
《西部林业科学》
CAS
北大核心
2022年第2期27-34,共8页
Journal of West China Forestry Science
基金
山西省艺术科学规划课题“‘两山论’转化路径视野下山西森林康养产业发展模式研究——以沁源太岳山区为例”(2020A055)。
关键词
森林康养
空气负离子
气象因素
太岳山
forest wellness
negative air ions
meteorological factors
Taiyue Mountain
