Variation patterns and influencing factors of air anionsindifferent plant communities of an urban park

doi:10.3969/j.issn.1000-5641.2021.02.015

Abstract

Abstract:

In this study, we evaluated the variation patterns of air anions in nine plant communities with different structures in Zhongshan Park of the central city of Shanghai; the air anion concentration was monitored continuously over the course of a year. In addition, we analyzed the influence of different factors—community structure, canopy density, and the level of surrounding water—on air anion concentration. The results showed that the air anion concentration within different community types was mostly between 200 cm³ and 700 cm³, and the daily variation showed a single peak. Air anion concentration remained at a high level but fluctuated significantly from July to October. The relationship between community structure and air anion concentration was roughly as follows: herbage > arbor with shrubs ≈ arbor with herbage > arbor with shrubs and herbage; in general, the more complex the community structure, the less the air anion variability. There was a negative correlation between the mean variation of the air anion concentration and the canopy density, implying that higher canopy density values were associated with lower mean variation of the air anion concentration throughout the community. This negative correlation became more significant in the daytime, between 7:00 to 19:00, when photosynthesis was ongoing. In addition, the impact of static water on the anion concentration was not found to be significant. The conclusion of this paper can provide basic data and a scientific basis for the construction of healthy plant communities in urban parks.

Key words: urban park, air anion, plant community, spatial variation

CLC Number:

X835

Wen SUN, Yujie HAN, Shan YIN. Variation patterns and influencing factors of air anionsindifferent plant communities of an urban park[J]. Journal of East China Normal University(Natural Science), 2021, 2021(2): 151-159.

Figures/Tables 9

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Table 1

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样地	群落名称	主要植物	植被类型	群落结构	附近水体
A	公园大门	香樟 + 冬青卫矛(Cinnamomum camphora (L.) Presl. + Euonymus japonicus Thunb.)	常绿阔叶林	乔 + 草	无
B	大门旁密林	香樟 + 黄杨(Cinnamomum camphora (L.) Presl. + Buxus sinica (Rehd. et Wils.) Cheng)	常绿阔叶林	乔 + 灌 + 草	无
C	荷花池	冬青卫矛 + 杜鹃(Euonymus japonicus Thunb. + Rhododendron simsii Planch.)	灌丛	乔 + 灌	距离静态水体池塘 5 m, 水面面积约 600 m²
D	乔灌草	中山柏 + 杨梅 + 散尾葵(Cupressus lusitanica ‘cultivar’ ZhongShanbai + Myrica rubra (Lour.) S. et Zucc. + Chrysalidocarpus lutescens H. Wendl.)	常绿针阔混交林	乔 + 灌 + 草	无
E	小广场	杨梅 + 麦冬(Myrica rubra (Lour.) S. et Zucc. + Ophiopogon japonicus (Linn. f.) Ker-Gawl.)	灌丛	乔 + 草	距离静态水体鸳鸯湖 8 m, 水面面积约 500 m²
F	音乐广场	香樟 + 鸡爪槭 + 黄杨(Cinnamomum camphora (L.) Presl. + Acer palmatum Thunb. + Buxus sinica (Rehd. et Wils.) Cheng)	常绿阔叶林	稀乔 + 灌 + 草	无
G	八角亭	杨梅 + 鸡爪槭 + 黄菖蒲(Myrica rubra (Lour.) S. et Zucc. + Acer palmatum Thunb. + Iris pseudacorus L.)	常绿阔叶林	乔 + 灌 + 草	无
H	水杉林	水杉 + 麦冬(Metasequoia glyptostroboides Hu & W. C. Cheng + Ophiopogon japonicus (Linn. f.) Ker-Gawl.)	落叶针叶林	乔 + 草	距离静态水体 15 m, 水面面积约 70 m²
I	大草坪	沟叶结缕草(Zoysia matrella (L.) Merr.)	地被	草(空白对照)	无

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