Retention Capacity of the Main Urban Afforest Plant Species for Atmospheric Particles in Northwest of Liaoning Province

SHU Min; SI Rimuji; JIANG Tao; ZHAO Xiaoliang; YANG Ming; JIN Changying; LI Kexin; SUN Meiyu

doi:10.13870/j.cnki.stbcxb.2018.04.047

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Retention Capacity of the Main Urban Afforest Plant Species for Atmospheric Particles in Northwest of Liaoning Province

更新时间：2025-03-12

- Retention Capacity of the Main Urban Afforest Plant Species for Atmospheric Particles in Northwest of Liaoning Province
- Vol. 32, Issue 4, Pages: 297-303(2018)
- 作者机构：
  
  1. 辽宁工程技术大学环境科学与工程学院,辽宁,阜新,123000
  2. 辽宁省风沙地改良利用研究所,辽宁,阜新,123000
- 作者简介：
- 基金信息：
- DOI：10.13870/j.cnki.stbcxb.2018.04.047
  CLC：
- Published：2018
- 稿件说明：
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SHU Min, SI Rimuji, JIANG Tao, et al. Retention Capacity of the Main Urban Afforest Plant Species for Atmospheric Particles in Northwest of Liaoning Province[J]. 2018, 32(4): 297-303.
DOI：

SHU Min, SI Rimuji, JIANG Tao, et al. Retention Capacity of the Main Urban Afforest Plant Species for Atmospheric Particles in Northwest of Liaoning Province[J]. 2018, 32(4): 297-303. DOI： 10.13870/j.cnki.stbcxb.2018.04.047.

摘要

采用洗脱法测定了辽西北地区阜新市15种常见绿化树种单位叶面积滞留粗颗粒物（TSP）及细颗粒物（PM2.5）的质量，分析比较了15种树种叶片去除TSP和PM2.5能力以及随着空间变化的规律。结果表明：（1）不同树种单位叶面积TSP和PM2.5滞留量均存在显著差异，变化范围分别为3.68~5.94 g/m2和0.47~0.92 g/m2，树种间滞留能力的差值可达2倍左右。（2）在同一个功能区不同树种滞留TSP和PM2.5的差异由树冠高度（绿篱 > 灌木 > 乔木）和叶表面粗糙度（叶表面沟槽宽度的不同可能是沟槽宽度过宽和过窄均不利于叶片捕集颗粒物，且颗粒物滞留量随沟槽深度增加而增大）以及叶片比叶重（比叶重大的滞尘量大）等所引起。（3）在不同功能区同一树种单位叶面积滞留TSP量的排序为工业区 > 商业交通区 > 露天矿区 > 清洁区，而PM2.5滞留量则无明显差异。乔木中新疆杨、灌木中紫丁香的单位叶面积滞留量与单株滞留量都较高，起到明显的降尘作用，是沙尘频发的辽西北地区城市绿化树种的优先之选。

Abstract

In this study

elution method was used to determine the retention quality amounts of TSP (larger particles) and PM2.5 (smaller particles) per unit leaf area of 15 common afforest plant species. The retentive capacities of TSP and PM2.5 for leaves from different plant species were analyzed and compared

and the location-variation law was investigated. Results showed:(1) There were significant differences in the retention amounts of TSP and PM2.5 per unit leaf area among plant species

ranging from 3.68 to 5.94 g/m2 for TSP

and from 0.47 to 0.92 g/m2 for PM2.5

respectively. The largest difference of retention amounts for plant species reached up to 2 times. (2) In the same location

the retention capacities of TSP and PM2.5 for different plant species varied as the variations of canopy height

blade surface roughness and specific leaf weight. Specifically

the sequence of retention capacities from high to low was hedge plants

bush plants and arbor plants

and the species with larger specific leaf weight had stronger retention capacity. For the factors of surface roughness

the retention amount of particles increased as the increase of groove depth

and a leaf with neither too wide nor too narrow groove width was proved to have good retention capacity. (3) For the retention amount of TSP in varied locations

the sequence from high to low was Industrial Area (IA)

Transportation Area (TA)

Open-pit Mine (OP)

and Clean Area (CA). In the case of PM2.5

there were little difference at those locations. The particle retention amounts per leaf area or per plant of P.albavar.pramidalis and Syringa oblata were higher than those of other examined species. Thus

those two species could be chosen as the priority species for urban afforestation for cities in Northwest of Liaoning Province with much dust weather.

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