深圳夏季3种生境城市森林内臭氧浓度变化规律

发布时间：2018-09-19 10:05

【摘要】：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.
[Abstract]:In summer of 2015, the ozone concentration and meteorological factors in the forest of three typical habitats, (River Valley) and (Ridge), were monitored day and night simultaneously in the forest of (Foothill), valley at the foot of Shenzhen Yuanshan Mountain, and the changes of ozone concentration in the forest and its influencing factors were studied. The results showed that the hourly mean and daily maximum 8h mean of ozone concentration in forest of three habitats in Yuanshan, Shenzhen reached the national first class standard (160100 渭 g/m~3, respectively), and the daily mean of ozone concentration in the three woodlands was higher than that in the control. Moreover, the diurnal variation of ozone concentration in Ridge was significantly higher than that in River Valley and Foothill; forests, showing a single peak curve, which was high in the daytime and low in the night. It reached the highest at 15: 00 and 17: 00, and decreased to the lowest at 5: 007: 00. The ozone concentrations of the three forest lands were all positively correlated with the temperature. In addition, the ozone concentration of Ridge was positively correlated with the wind speed. In a word, the ozone concentration in the three forest types of Yuanshan in Shenzhen accords with the air quality requirements of forest recreation activities. Based on the ozone concentration, it is most appropriate for people to take forest recreation at 5: 00 or 7: 00.
【作者单位】：中国林业科学研究院林业研究所国家林业局林木遗传育种重点实验室;国家林业局城市森林研究中心;
【基金】：国家科技支撑计划(2015BAD07B06) 林业公益性行业科研专项经费项目(201404301)
【分类号】：X515

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