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JoVE Journal
Environment
活性有机碳评估土壤中连续熏蒸孵化程序
活性有机碳评估土壤中连续熏蒸孵化程序
JoVE Journal
Environment
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JoVE Journal Environment
Assessment of Labile Organic Carbon in Soil Using Sequential Fumigation Incubation Procedures

活性有机碳评估土壤中连续熏蒸孵化程序

Full Text
12,156 Views
09:04 min
October 29, 2016

DOI: 10.3791/54614-v

Michael A. Blazier1, Hal O. Liechty2

1Hill Farm Research Station,Louisiana State University Agricultural Center, 2School of Forestry and Natural Resources,University of Arkansas at Monticello

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Please note that some of the translations on this page are AI generated. Click here for the English version.

不稳定有机碳 (LOC) 和潜在碳周转率是土壤养分循环过程变化的敏感指标。为一种基于在一系列循环中熏蒸和孵育土壤并使用孵育期间积累的 CO2 来估计这些参数的方法提供了详细信息。

这种顺序熏蒸培养程序的总体目标是估计土壤中不稳定的碳和潜在的碳周转率。这种方法可以回答土壤微生物学领域的关键问题,例如土壤微生物用来转化土壤养分的基质量。这种技术的主要优点之一是它使用相对简单且价格低廉。

在采集之前,确定采集点内土壤特性和植被的差异。使用适当的变异系数,确定所需的样本数和变异性的距离。对于异质土壤条件,指定一个网格样本模式,其中每个样带上样本点之间的距离小于实验单元内的变异距离。

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