The need for monitoring Asian dust is increasing owing to concerns about its harmful effects on ecosystems and human health. Strontium isotope ratios of mosses can be used to monitor Asian dust because of the traceability of these ratios and nutrient uptake by mosses from atmospheric deposition. Hence, the present study examined the suitability of strontium isotope ratios of mosses for monitoring Asian dust. Given the higher strontium isotope ratios of Asian dust than those of domestic origins, these ratios of mosses would be higher in areas with Asian dust. Moss samples were collected from 13 sites across Japan. The strontium isotope ratios of mosses in all study sites were lower than those of Asian dust. Although western Japan is more strongly influenced by Asian dust than eastern Japan, there were no significant differences in the strontium isotope ratios between these regions. Notably, the strontium isotope ratios of mosses significantly and positively correlated with those of the local soil across the study sites. These results indicate that strontium in mosses was derived from the local soil, and this uptake pattern may be attributed to a considerable supply of soil-derived strontium. In conclusion, the strontium isotope ratio of mosses is not a suitable indicator for the influence of Asian dust in Japan. Future studies should investigate whether these results could be applied to epiphytic mosses as potential indicators for Asian dust because epiphytes are less influenced by soil-derived minerals than terrestrial mosses.

由于担心其对生态系统和人类健康的有害影响，监测亚洲粉尘的需求正在增加。苔藓的锶同位素比率可用于监测亚洲尘埃，因为这些比率的可追溯性和苔藓从大气沉积中吸收的养分。因此，本研究检验了苔藓的锶同位素比率在监测亚洲尘埃方面的适用性。鉴于亚洲尘埃的锶同位素比率高于国内来源，苔藓的这些比率在有亚洲尘埃的地区会更高。从日本的 13 个地点收集了苔藓样本。所有研究地点苔藓的锶同位素比率均低于亚洲尘埃。虽然日本西部比日本东部受亚洲尘埃的影响更大，这些区域之间的锶同位素比率没有显着差异。值得注意的是，苔藓的锶同位素比率与研究地点的当地土壤的锶同位素比率显着正相关。这些结果表明苔藓中的锶来自当地土壤，这种吸收模式可能归因于土壤来源的锶的大量供应。综上所述，苔藓的锶同位素比值不是日本亚洲尘埃影响的合适指标。未来的研究应该调查这些结果是否可以应用于附生苔藓作为亚洲灰尘的潜在指标，因为与陆生苔藓相比，附生植物受土壤衍生矿物质的影响较小。苔藓的锶同位素比率与整个研究地点的当地土壤的锶同位素比率显着正相关。这些结果表明苔藓中的锶来自当地土壤，这种吸收模式可能归因于土壤来源的锶的大量供应。综上所述，苔藓的锶同位素比值不是日本亚洲尘埃影响的合适指标。未来的研究应该调查这些结果是否可以应用于附生苔藓作为亚洲灰尘的潜在指标，因为与陆生苔藓相比，附生植物受土壤衍生矿物质的影响较小。苔藓的锶同位素比率与整个研究地点的当地土壤的锶同位素比率显着正相关。这些结果表明苔藓中的锶来自当地土壤，这种吸收模式可能归因于土壤来源的锶的大量供应。综上所述，苔藓的锶同位素比值不是日本亚洲尘埃影响的合适指标。未来的研究应该调查这些结果是否可以应用于附生苔藓作为亚洲灰尘的潜在指标，因为与陆生苔藓相比，附生植物受土壤衍生矿物质的影响较小。这种吸收模式可能归因于土壤衍生锶的大量供应。综上所述，苔藓的锶同位素比值不是日本亚洲尘埃影响的合适指标。未来的研究应该调查这些结果是否可以应用于附生苔藓作为亚洲灰尘的潜在指标，因为与陆生苔藓相比，附生植物受土壤衍生矿物质的影响较小。这种吸收模式可能归因于土壤衍生锶的大量供应。综上所述，苔藓的锶同位素比值不是日本亚洲尘埃影响的合适指标。未来的研究应该调查这些结果是否可以应用于附生苔藓作为亚洲灰尘的潜在指标，因为与陆生苔藓相比，附生植物受土壤衍生矿物质的影响较小。