论文部分内容阅读
于2015年夏季对深圳园山山麓(Foothill)、河谷(River Valley)和山脊(Ridge)等3种典型生境城市森林内的臭氧浓度和气象因子进行昼夜24h同步监测,研究林内臭氧浓度的变化规律及影响因素.结果表明:深圳园山3种生境城市森林内臭氧浓度的小时均值和日最大8h均值都达到了国家一级标准(分别为160,100μg/m~3);3个林地的臭氧浓度日均值都高于对照,且Ridge显著高于River Valley和Foothill;林内臭氧浓度的日变化都呈单峰曲线,表现为白天高,夜间低,在15:00~17:00达到最高,在5:00~7:00降到最低;3种林地的臭氧浓度都与温度极显著正相关,与湿度极显著负相关,此外Ridge的臭氧浓度还与风速极显著正相关.总之,深圳园山3种林分内的臭氧浓度符合人们进行森林游憩活动的空气质量要求,基于臭氧浓度,人们在5:00~7:00进行森林游憩最为适宜.
In the summer of 2015, the ozone concentration and meteorological factors in three typical Habitat urban forests in Shenzhen, such as Foothill, River Valley and Ridge, were monitored synchronously at day and night for 24h to study the variation of ozone concentration in the forest And the influencing factors.The results showed that the average hourly ozone concentration and daily maximum 8h mean of ozone concentration in the three kinds of habitats of Yuanshan Mountain in Shenzhen reached the national first-class standard (160 and 100μg / m ~ 3, respectively). The ozone concentration Day average was higher than the control, and Ridge was significantly higher than that of the River Valley and Foothill. The diurnal variation of ozone concentration in the forest showed a single peak curve, showing high daytime and low nighttime, reaching the highest at 15: 00-17: 00, : 00 ~ 7: 00. The ozone concentrations of three kinds of forest land are highly significant positive correlation with temperature, extremely significant negative correlation with humidity, and Ridge ozone concentration is also significantly and positively correlated with wind speed.In conclusion, The concentration of ozone in the forest stands meets the air quality requirements for forest recreation activities. Based on the ozone concentration, people are most likely to enjoy forest recreation at 5: 00-7: 00 am.