土壤有机碳作用及转化机制研究进展
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张维理,KOLBEH,张认连
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Research Progress of SOC Functions and Transformation Mechanisms
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WeiLi ZHANG,H KOLBE,RenLian ZHANG
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表2 德国土壤有机质含量(0—20 cm土层)分级[23]
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Table 2 Soil organic matter content (0—20 cm soil depth) in Germany
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分级 Grade | 分级释义 Grade interpretation | 有机质 OM (g·kg-1) | 换算系数 Conversion coefficient | 有机碳 SOC (Corg g·kg-1) | 1 | 很低 Very low | <10 | 1.724 | <5.8 | 2 | 低 Low | 10—20 | 1.724 | 5.8—11.5 | 3 | 中 Medium | 20—40 | 1.724 | 11.6—23.1 | 4 | 较高 A little high | 40—80 | 1.724 | 23.2—46.3 | 5 | 很高 Very high | 80—150 | 1.724 | 46.4—86.9 | 6 | 极端高 Extremely high | 150—300 | 2 | 87.0—150.0 | 7 | 泥炭土 Peat soil | >300 | 2 | >150.0 |
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