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- Title
和田市夏季不同树种滞尘效应研究.
- Authors
鲍昱璇; 陈天宇; 张凯欢; 杨红; 谢海燕; 帕丽达; 牙合甫
- Abstract
With the purpose of probing into the capability of various tree species in Hotan City in the retention of dust parti⁃ cles of different diameters, twelve species of trees were selected and the leaves were picked and gathered in Kunlun Lake Park of the City. By measuring the plant height, crown height, crown width and unit leaf area (cm²) of these trees, the total leaf area, three-dimensional green biomass and leaf area index were calculated, and the amount of different particles retained on leaves by different tree species was obtained by use of the membrane filtration method. In conclusion, the research presented that seven growth indexes measured were correlated with the amount of particles with different diameters retained by different tree species. As to the distribution of retained particles of different diameters by various tree species, it was found that the proportion of the particles'diameters of 10~100 μm was the largest, while the proportion of the particles'diameters ranging from 0.22 to 3 μm was the least. Regarding the amount of dust particles of different diameters retained in unit leaf area, PM3 ranged from 2.556 to 12.912 μg/cm², and PM10 from 9.869 to 36.635 μg/cm²; as to the different tree species, Populus L. kept up the biggest amount of TSP, and for the amounts of PM3, PM10 and TSP retained on per leaf, and Firmiana platanifolia (L. f.) Marsili were obviously more than other species. Additionally, as for the dust-particles retaining capability of an individual plant, among various species, Populus L., Morus alba Linn. Sp. and Firmiana platanifolia (L. f.) Marsili in order were stronger than others; and in regard to the per unit land area (hm2), Populus L. possessed the strongest capability of keeping up particles of different diameters, the amounts of PM3, PM10 and TSP retained were 11.059, 58.988 and 196.905 kg/hm², respectively. In summary, tree species such as Populus L., Firmiana platanifolia (L. f.) Marsili, Ailanthus altissima, and Morus alba Linn. Sp. showed a rather strong PMs-retaining power, while that of Prunus cerasifera, Prunus triloba and Ulmus pumila L. Var. pendula were comparatively weaker.
- Subjects
LEAF area index; AILANTHUS altissima; WHITE mulberry; MEMBRANE separation; LEAF area; WATER filtration; DUST
- Publication
Environmental Science & Technology (10036504), 2022, Vol 45, Issue 7, p46
- ISSN
1003-6504
- Publication type
Article
- DOI
10.19672/j.cnki.1003-6504.0120.22.338