添加石灰和秸秆对塿土有机碳固持的影响
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曹彬彬,朱熠辉,姜禹含,师江澜,田霄鸿
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Effects of Lime and Straw Addition on SOC Sequestration in Tier Soil
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CAO BinBin,ZHU YiHui,JIANG YuHan,SHI JiangLan,TIAN XiaoHong
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表4 不同处理下土壤新碳的形成及原有土壤有机碳的分解的差异
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Table 4 Differences between soil straw-derived organic carbon formation and decomposition of native organic carbon under different treatments
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处理
Treatment | 丰度值
δ13C
13C abundance
(‰) | 土壤有机碳
(Ctotal)
Final SOC
(g?kg-1) | 源自秸秆碳比例(fnew)
New OC proportion (%) | 源自秸秆碳
New OC
(g?kg-1) | 源自原土壤碳比例(fnative)
Native SOC proportion (%) | 源自土壤有机碳
Native SOC
(g?kg-1)
| | S0N0 | L0 | M0 | -23.54 | 7.35e | 0 | 0 | 100 | 7.35b | | | M1 | -21.61 | 10.30d | 28.9 | 2.98a | 71.1 | 7.32b | | L1 | M0 | -23.52 | 7.22e | 0 | 0 | 100 | 7.22b | | | M1 | -21.49 | 10.66d | 32.4 | 3.45a | 67.6 | 7.21b | | S1N1 | L0 | M0 | -25.28 | 12.48c | 0 | 0 | 100 | 12.48a | | | M1 | -23.48 | 14.67a | 15.1 | 2.21b | 84.9 | 12.46a | | L1 | M0 | -25.42 | 12.40c | 0 | 0 | 100 | 12.40a | | | M1 | -23.46 | 14.20b | 15.2 | 2.15b | 84.8 | 12.04a |
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