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摘要: 为科学选择城镇造林或绿化树种，对浙江省嘉兴市新塍镇13 个树种林分内的空气负离子浓度进行日变化监测研究。结果表明：不同树种林分的空气负离子浓度具有一定差异，樱花Cerasus serrulata+小叶黄杨Buxus sinica var. parvifolia混交林、红枫Acer palmatum Atropurpureu纯林内空气负离子浓度相对较高，黄山栾树Koelreuteria paniculata与无患子Sapindus mukorossi纯林内空气负离子浓度较低。不同结构林分的空气负离子浓度差异明显，表现为乔灌混交林＞灌木林＞乔木林，其空气负离子浓度日变化趋势较为一致，均在上午10 : 00左右出现 1个峰值，在下午16 : 00 － 18 : 00呈上升趋势。对空气负离子与环境因子的相关性分析显示，空气负离子与相对湿度呈极显著正相关（P＜0.01），而与温度极显著负相关（P＜0.01），与紫外线强度显著负相关（P＜0.05）。对空气负离子与林分因子的相关性分析显示，空气负离子浓度与林分密度呈显著正相关（P＜0.05）。图2表5参14Abstract: To provide a theoretical basis for choosing suitable tree species for urban afforestation，diurnal variation of the aero-anion concentration surrounding 13 different stand types（Sapindus mulorossi，Michelia maudiae，Michelia chapensis，Elaeocarpus sylvestris，Cinnamomum camphora，Magnolia grandiflora，Acer palmatumAtropurpureu，Dendronenthamia japonica var. chinensis，Osmanthus fragrans，Koelrenteria paniculata，Prunus serrulata+Buxus sinica，Magnolia denudata+Buxus sinica，and Liquidambar formosana） in the nursery of Xincheng Town，Jiaxing City in Zhejiang Province was compared by LSD and studied using a correlation analysis with environmental factors and characteristic of plant communities. Results showed that among the 13 stand types，a mixed plantation of Prunus serrulata with Buxus sinica （822 particlecm-3） and a pure plantation of Acer palmatumAtropurpureu（743 particlecm-3） had higher aero-anion concentrations with Koelreuteria paniculata （533 particlecm-3） and Sapindus mukorossi （532 particlecm-3） pure plantations having lower concentrations. A multilayer tree-shrub structure had the highest aero-anion concentration （751 particlecm-3） followed by shrubs （700 particlecm-3） then trees （622 particlecm-3）. According to the 6 : 00 to 18 : 00 diurnal variation curves，the aero-anion concentration tended to peak at 10 : 00 and with an another general increase from 16 : 00 to 18 : 00. The correlation analysis showed a strong significant，positive correlation between aero-anion concentration and relative humidity（P＜0.01，r = 0.473）；a strong significant，negative correlation for aero-anion concentration and temperature（P＜0.01，r = - 0.504）；a significant negative correlation between aero-anion concentration and ultraviolet radiation intensity（P＜0.05，r = - 0.305）；and a significant positive correlation for aero-anion concentration and planting density（P＜0.05，r = 0.648）. The plant communities were able to improve the aero-anion concentration of mini-surrounding.［Ch，2 fig. 5 tab. 14 ref.］
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Key words:
- forest ecology /
- aero-anion concentration /
- tree species /
- environmental factors /
- forest stand
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链接本文:
https://zlxb.zafu.edu.cn/article/doi/10.11833/j.issn.2095-0756.2011.02.005
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