| 辽宁西北部主要绿化树种对空气颗粒物滞留能力研究 |
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| 引用本文： | 淑敏,斯日木极,姜涛,赵晓亮,杨明,金昶颖,李珂欣,孙美玉.辽宁西北部主要绿化树种对空气颗粒物滞留能力研究[J].水土保持学报,2018,32(4):297-303,309. |
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| 作者姓名： | 淑敏 斯日木极 姜涛 赵晓亮 杨明 金昶颖 李珂欣 孙美玉 |
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| 作者单位： | 辽宁工程技术大学环境科学与工程学院;辽宁省风沙地改良利用研究所 |
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| 基金项目： | 辽宁省教育厅科学技术研究项目（LJYL023）；辽宁省大学生创新项目（201710147000277，201610147000021）；辽宁省自然科学基金指导计划项目（17-1058）；辽宁省自然科学基金计划重点项目（20170540425） |
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| 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(PM_(2.5))的质量,分析比较了15种树种叶片去除TSP和PM_(2.5)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PM_(2.5)滞留量均存在显著差异,变化范围分别为3.68~5.94g/m~2和0.47~0.92g/m~2,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PM_(2.5)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PM_(2.5)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。
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| 关 键 词： | 绿化树种 植物叶片 TSP、PM2.5 滞留 不同功能区划分 |
| 收稿时间： | 2018/1/29 0:00:00 |
Retention Capacity of the Main Urban Afforest Plant Species for Atmospheric Particles in Northwest of Liaoning Province |
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| SHU Min,SI Rimuji,JIANG Tao,ZHAO Xiaoliang,YANG Ming,JIN Changying,LI Kexin,SUN Meiyu.Retention Capacity of the Main Urban Afforest Plant Species for Atmospheric Particles in Northwest of Liaoning Province[J].Journal of Soil and Water Conservation,2018,32(4):297-303,309. |
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| Authors: | SHU Min SI Rimuji JIANG Tao ZHAO Xiaoliang YANG Ming JIN Changying LI Kexin SUN Meiyu |
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| Institution: | 1. College of Environmental Sciences and Engineering, Liaoning Technical University, Fuxin, Liaoning 123000;2. Liaoning Institute of Sandy Land Improvement and Utilization, Fuxin, Liaoning 123000 |
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| 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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| Keywords: | urban greening trees plant leaves TSP PM2 5 retention different functional area |
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