| 摘要: |
| 为筛选光合特性和滞尘能力较强的垂直绿化植物, 以广州市 12 种垂直绿化植物为研究对象,
使用 Li-6800 便携式光合仪测定光合与生理参数, 采用洗脱称量粒度分析法和微孔滤膜法测定植物滞尘能
力。 结果 表 明, 鸭 脚 木 Heptapleurum heptaphyllum 净 光 合 速 率 ( Pn ) 最 高, 红 花 檵 木 Loropetalum
chinense、 吊兰BS (花城汇北区样地) Chlorophytum comosum 等蒸腾速率 (Tr) 较低, 耗水量低, 抗性强; 除了红
花檵木和毛蕨 Cyclosorus interruptus 光补偿点 (Light compensation point, LCP) 接近阳生植物, 其余植物
LCP 均接近阴生植物。 花叶青木 Aucuba japonica、 吊兰BS 滞尘量最大, 对比两个样地的吊兰和鸭脚木得
出, 同一植物在不同生境的滞尘存在明显差异, 随污染程度的增加滞尘量具有明显增幅; 12 种垂直绿化
植物的总悬浮颗粒物 (Total suspended particulate, TSP) 大小为: 花叶青木>吊兰>鸭脚木BS >花叶鸭脚木
Schefflera actinopylla>毛蕨 Cyclosorus interruptus>绿萝 Epipremnum aureum>鸭脚木SQ ( 高德置地广场样地) >白脉椒
草 Peperomia tetragona>吊竹梅 Tradescantia zebrina>肾蕨 Nephrolepis cordifolia>合果芋 Syngonium podophyllum>红花檵木>巢蕨 Asplenium nidus>吊兰SQ 。 对比 SQ 和 BS 包含的相同植物: 吊兰BS 的 TSP、 干重滞尘
量、 PM> 10 、 PM10 和 PM2. 5 分别是吊兰SQ 的 8. 93、 3. 24、 7. 65、 15. 99 倍, 鸭脚木BS 和鸭脚木SQ 的 TSP、
干重滞尘量、 PM> 10 、 PM10 和 PM2. 5 的比例为: 2. 16、 1. 43、 0. 67、 5. 35、 9. 74。 在进行城市垂直绿化建
设时, 花叶青木、 吊兰、 鸭脚木和花叶鸭脚木可作为优先选择的植物。 |
| 关键词: 垂直绿化 光合特性 日动态 滞尘能力 粒径 |
| DOI： |
| 分类号: |
| 基金项目: |
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| Photosynthetic Characteristics and Dust-holding Capacity of 12 Vertical Greening Plants in Guangzhou City |
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WangFurong, WU Zuying, CHEN Ping, XU Mingyu, CUI Baoxuan, XING Zhewen, LUO Wei, ZHANG Zhaohui
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Zhongkai University of Agriculture and Engineering
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| Abstract: |
| To screen vertical greening plants with strong photosynthetic characteristics and dust - holding
capacity, 12 kinds of vertical greening plants in Guangzhou were selected as the research objects. The photosynthetic and physiological parameters were determined by the Li-6800 portable photosynthetic system, and the dust
-holding capacity was determined by elution weighing particle size analysis and microporous membrane filtration
method. The results showed that the net photosynthetic rate (Pn ) of Heptapleurum heptaphyllum was the high-est, the transpiration rate (Tr) of Loropetalum chinense and Chlorophytum comosum in the plot of the Mall of
the World North District was lower, and the water consumption was lower and the resistance was stronger. The
light compensation point (LCP) of all plants was close to shade except that of L. chinense and Cyclosorus interruptus. Aucuba japonica and C. comosum in the plot of the Mall of the World North District had the highest
dust-holding capacity. Comparing C. comosum and H. heptaphyllum in the two sample sites, it was concluded that there was a significant difference in the dust-holding capacity of the same plant in different habitats,
and the that the amount of dust-holding capacity increased significantly with the increase of pollution degree.
The TSP size of 12 kinds of vertical greening plants was as follows: A. japonica>C. comosum>H. heptaphyllum in the plot of the Mall of the World North District>Schefflera actinopylla>Cyclosorus interruptus>Epipremnum aureum>H. heptaphyllum in the plot of the Gaode Land Plaza>Peperomia tetragona>Tradescantia zebrina>
Nephrolepis cordifolia>Syngonium podophyllum>L. chinense>Asplenium nidus>C. comosum in the plot of the
Gaode Land Plaza. Comparing the same plants contained in SQ and BS, the TSP, dry weight dust-holding amount, PM>10 , PM10
and PM2. 5 of C. comosum in the plot of the Mall of the World North District were 8. 93,
3. 24, 7. 65 and 15. 99 times that of C. comosum in the plot of the Gaode Land Plaza, respectively. The ratios
of TSP, dry weight dust-holding , PM>10 , PM10 , and PM2. 5 were 2. 16, 1. 43, 0. 67, 5. 35 and 9. 74 for H.
heptaphyllum in the plot of the Mall of the World North District and H. heptaphyllum in the plot of the Gaode
Land Plaza. In the construction of urban vertical greening, A. japonica, C. comosum, H. heptaphyllum, S.
actinopylla can be chosen as the preferred plants. |
| Key words: vertical greening photosynthetic properties daily dynamics dust-holding capacity particle size |
