生态学报2025，Vol.45Issue(24)：12337-12346,10.DOI:10.20103/j.stxb.202503120557
雅鲁藏布江米林宽谷区典型落叶灌木滞尘能力分析
Analysis of dust-retention capacity of typical deciduous shrubs in the widened valley area of the Milin section of the Yarlung Zangbo River
摘要
Abstract
The Milin Wide Valley area of the Yarlung Zangbo River is one of the regions with the most frequent dust storm activity on the Tibetan Plateau,posing a significant threat to the ecological and environmental security of the basin.The Shrub canopies play a crucial role in reducing atmospheric particulate concentrations and mitigating dust storm disasters.This study systematically revealed the synergistic regulatory mechanism of shrub morphological characteristics and leaf surface microstructure on dust retention,by measuring the dust deposition from single leaf to single plant during the sandstorm periods(April and November)and analyzing the particle size distribution,in conjunction with leaf surface microstructure observations.The results are as follows:(1)The fine particles with diameters less than 2.5 μm were mainly adsorbed by shrub leaves,which accounted for 79.80%of the total dust retention.(2)There were also large differences in the dust-retention capacity of different tree species,with all species holding more dust in November than their April counterparts.(3)The total leaf number per plant and LAI were significantly negatively correlated with the dust retention per unit leaf area(P＜0.05)and highly significantly negatively correlated with dust retention per leaf(P＜0.01);stomatal aperture was highly significantly positively correlated with dust retention per leaf(P＜0.01).(4)The comprehensive dust retention ability of Caragana crassispina and Berberis gyalaica was the strongest,which can be prioritized as dust-retention tree species in the Yarlung Zangbo River wide valley region.The results of this study are expected to provide a theoretical basis and practical guidance for the improvement of the ecological environment in the Yarlung Zangbo River wide valley area.关键词
雅鲁藏布江/落叶灌木/叶面滞尘/形态特征/叶面微结构Key words
Yarlung Zangbo River/deciduous shrub/dust-retention capacity/morphological characteristics/leaf surface microstructure引用本文复制引用
WANG Qiuyue,ZHOU Mengyao,DING Guodong..雅鲁藏布江米林宽谷区典型落叶灌木滞尘能力分析[J].生态学报,2025,45(24):12337-12346,10.基金项目
中国电建集团成都勘测设计研究院有限公司项目(PA2230) （PA2230）
