Early stage litter decomposition across biomes
Early stage litter decomposition across biomes
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DOI：
10.1016/j.scitotenv.2018.01.012
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发表时间：
2018-07-01
影响因子：
9.8
通讯作者：
Toth, Zsolt
中科院分区：
文献类型：
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作者：
Djukic, Ika;Kepfer-Rojas, Sebastian;Toth, Zsolt
通过垃圾分解，大量的碳被排放到大气中。许多大规模的分解实验已经集中在这个基本的土壤过程，以了解陆地碳转移到大气中的控制。然而，以前的研究大多是基于特定地点的垃圾和方法，增加了重大的不确定性的合成，比较和荟萃分析在不同的实验和网站。在茶成分倡议中，通过使用标准化基质（Rooibos和绿色茶）对不同生态系统中336个地点（MAT从-9到+26 ℃，MAP从60到3113 mm）的凋落物质量损失进行比较，对潜在的凋落物分解进行了调查。在这项研究中，我们测试了气候（温度和湿度），凋落物类型和土地利用的早期阶段分解（3个月）在9个生物群落的影响。结果表明，凋落物质量是凋落物分解早期的主要控制因子，它解释了全球范围内凋落物分解变异的65%。气候的影响，另一方面，是不是具体的垃圾和解释
Through litter decomposition enormous amounts of carbon is emitted to the atmosphere. Numerous large-scale decomposition experiments have been conducted focusing on this fundamental soil process in order to understand the controls on the terrestrial carbon transfer to the atmosphere. However, previous studies were mostly based on site-specific litter and methodologies, adding major uncertainty to syntheses, comparisons and meta-analyses across different experiments and sites. In the TeaComposition initiative, the potential litter decomposition is investigated by using standardized substrates (Rooibos and Green tea) for comparison of litter mass loss at 336 sites (ranging from -9 to +26 degrees C MAT and from 60 to 3113 mm MAP) across different ecosystems. In this study we tested the effect of climate (temperature and moisture), litter type and land-use on early stage decomposition (3 months) across nine biomes. We show that litter quality was the predominant controlling factor in early stage litter decomposition, which explained about 65% of the variability in litter decomposition at a global scale. The effect of climate, on the other hand, was not litter specific and explained