无纺布袋泡茶可以用来测定袋泡茶指数吗?

IF 1.7 Q3 ECOLOGY
Ecologies Pub Date : 2022-06-01 DOI:10.3390/ecologies3020014
Taiki Mori
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引用次数: 4

摘要

研究人员研究了各种人为活动对垃圾分解率的影响,因为它们对未来的碳预算和气候变化有很大影响。然而,任何关于人为活动对垃圾分解的全球范围影响的评估都需要标准化的方法,这些方法可以排除垃圾化学的可变性。袋泡茶指数(TBI)被广泛用作一种标准化方法,以获得早期枯枝落叶分解的分解常数k和稳定因子S。最近,一家袋泡茶制造商将袋泡茶网的材料和尺寸从0.25毫米的编织网改为不均匀的非织造网。为了测试网状材料的这些变化是否对TBI方法有任何影响,进行了孵育研究。在获得绿茶和rooibos茶的时间序列分解数据后,对TBI方法的两个基本假设进行了检验:(i)绿茶的大部分不稳定水解部分在90天内分解(除非环境不利于分解),以及(ii)绿茶的S与rooibos的S相等。由于网格材料的变化,结果没有显示TBI方法的第一个假设的明确分解,也不支持第二个假设。通过将渐近线模型与时间序列数据拟合确定的rooibos茶的S显著大于基于TBI的S。总之,使用非织造茶包可能无法确定TBI。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Can Nonwoven Tea Bags Be Used to Determine the Tea Bag Index?
Researchers have studied the impact of various anthropogenic activities on litter decomposition rates because of their large impact on the future carbon budget and climate change. However, any assessment of the global-scale impact of anthropogenic activity on litter decomposition requires standardized methods that can exclude the variability of litter chemistry. The Tea Bag Index (TBI) is widely used as a standardized method to obtain both the decomposition constant k of early-stage litter decomposition and the stabilization factor S. Recently, a tea bag manufacturer changed the materials and size of the tea bag mesh from a 0.25 mm woven mesh to a nonuniform, nonwoven mesh. To test whether these changes in mesh materials have any effect on the TBI approach, an incubation study was performed. Obtaining time series decomposition data for both green and rooibos teas, two essential assumptions of the TBI approach were examined: (i) that most of the unstabilized hydrolyzable fraction of green tea is decomposed within 90 days (unless the environment is unfavorable for decomposition) and (ii) the S of green tea is equal to that of rooibos tea. The results did not show a clear breakdown of the first assumption of the TBI approach due to the changes in mesh materials, and they did not support the second assumption. The S of rooibos tea determined by fitting an asymptote model to the time series data was significantly larger than the TBI-based S. In conclusion, the TBI may be undeterminable using nonwoven tea bags.
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CiteScore
1.80
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