Quantification of metabolically active transient storage (MATS) in two reaches with contrasting transient storage and ecosystem respiration
Quantification of metabolically active transient storage (MATS) in two reaches with contrasting transient storage and ecosystem respiration
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通过对比瞬时储存和生态系统呼吸，对两个河段的代谢活性瞬时储存（MATS）进行量化
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发表时间：
2011
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通讯作者：
J. Zarnetske
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作者：
A. Argerich;R. Haggerty;E. Martí;F. Sabater;J. Zarnetske
很深的冲积存款。在基岩河段（37%的瞬时存储）和冲积河段（100%的瞬时存储）的MATS区测量为0.002 m 2。基岩河段MATS的Raz转换有效速率系数约为冲积河段的16倍。然而，当我们考虑到整体代谢活动的MATS区的贡献，拉兹转换在MATS区的基岩河段比冲积河段慢2.2倍。这种差异类似于生态系统呼吸的差异，基岩河段比冲积河段低1.8倍，表明MATS区是生态系统呼吸的重要贡献者。结果表明，MATS的量化可以提高我们对瞬时存储区在流代谢过程中所起作用的理解，并证明Raz作为“智能”示踪剂的实用性，该示踪剂在整个范围内和更小的尺度上提供关于代谢活动的新信息。引文：Argerich，A.，R. Haggerty，E. Marti，F. Sabater和J. Zarnetske（2011），两个河段中代谢活性瞬时储存（MATS）的定量与对比瞬时储存和生态系统呼吸，J. Geophys。结果：116，G03034，doi：10.1029/2010JG001379。
a deep alluvial deposit. The MATS zones measured 0.002 m 2 in the bedrock reach (37% of transient storage) and 0.291 m 2 in the alluvial reach (100% of transient storage). The effective rate coefficient of Raz transformation in the MATS of the bedrock reach was approximately 16 times that of the alluvial reach. However, when we take into account the contribution of the MATS zone to overall metabolic activity, Raz transformation in the MATS zone was 2.2 times slower in the bedrock reach than in the alluvial reach. The difference was similar to the difference in ecosystem respiration, which was 1.8 times lower in the bedrock reach than in the alluvial reach, suggesting that the MATS zones were important contributors to ecosystem respiration. Results indicate that the quantification of MATS can improve our understanding of the role that transient storage zones play on stream metabolic processes and demonstrate the utility of Raz as a “smart” tracer that provides new information on metabolic activity at a whole‐reach and at smaller scale. Citation: Argerich, A., R. Haggerty, E. Marti, F. Sabater, and J. Zarnetske (2011), Quantification of metabolically active transient storage (MATS) in two reaches with contrasting transient storage and ecosystem respiration, J. Geophys. Res., 116, G03034, doi:10.1029/2010JG001379.