摘要
据研究火地塘林场小气候效应明显。林场内日照时数可减少30％;日平均气温可降低4.1℃,夏季全日平均气温均保持在17℃～23℃,林冠层以下终日存在逆温;相对湿度增加7％;风速多小于1m/s,80％以上的时间是静风。林场内空气清洁,年释氧量为2657764m^3;含尘量减少90％,细菌含量减少92％。林场内100％的时间人体感觉舒适,舒适时间是林外的1.6倍。人的脉搏恢复率平均提高20％;辨听距离平均增加50％;血压也有所下降。
It is reported that the microclimate effect formed around Huoditang Experimental Forest Station is of significance. Compared with the control area, relative indices are as follows. The duration of sunshine in the station decreases by 30 per cent. The average daily temperature decreases 4. 1 C . The average daily temperature in summer remains in the range of 17 C to 23 C. The temperature inversion exists throughout the day under the leaf -canopy. The relative humidity increases by 7 per cent. The wind speed usually is below 1 m/s, and over 80 per cent of daily time is calm. The air is clean and 2 657 764m3 of oxygy are released annually. The contents of dust and bacteria decrease by 90 and 92 per cent respctively. The comfort index is 100 per cent that is more than 1. 6 times in control area. The rate of pulse recovery increases by an average of 20 per cent. The sound perception distance increases by 50 per cent, and the blood preassure drops somewhat as well.
出处
《西北林学院学报》
CSCD
1994年第3期17-20,共4页
Journal of Northwest Forestry University
关键词
小气候
净化空气
人体舒适感
microclimate
air purification
human sense of comfort
