论文--中国科学院地理科学与资源研究所

论文

论文题目：	Dynamic fluctuations in plant leaf interception of airborne microplastics
第一作者：	Jiao Meng, Wang Yijin, Yang Fei, Zhao Zhen etc.
联系作者：
发表年度：	2024
摘　　要：	Plant leaves have been demonstrated to be a crucial sink of airborne microplastics (MPs). However, because of the particular shape of MPs and their relatively weak forces with leaves, the traditional accumulation model used for the adsorption of particulate matter and persistent organic pollutants may not be appropriate for describing the interception of MPs by leaves. Here, we performed a 7-day exploration of the interception of MPs by leaves in downtown Nanning. The abundances and characteristics of leaf-intercepted MPs showed dramatic diurnal fluctuations and interspecies differences (conifers > arbors > shrubs). The fluctuation (Coefficient of Variation (CV) = 0.459; abundances 0.003 +/- 0.002 to 0.047 +/- 0.005 ncm(-2)) was even more drastic than that measured across species (CV = 0.353; 0.06 +/- 0.01 to 0.40 +/- 0.04 ncm(-2)). Further analysis using partial least-squares path modeling demonstrated that stomatal variation and divergence largely dominated diurnal fluctuations and interspecies differences in microplastic interception by leaves, respectively. Our results highlight that the leaf-intercepted MPs is characterized by dynamic fluctuations rather than static equilibrium and reveal the important regulatory roles played by leaf micromorphological structures in intercepting MPs, thus enhancing our understanding of the interactions between terrestrial plants and airborne pollution.
英文摘要：
刊物名称：	SCIENCE OF THE TOTAL ENVIRONMENT
全文链接：
论文类别：	SCI