Chin J Plant Ecol ›› 2018, Vol. 42 ›› Issue (4): 508-516.DOI: 10.17521/cjpe.2017.0311
• Research Articles • Previous Articles
Yong BAO,Ying GAO,Xiao-Min ZENG,Ping YUAN,You-Tao SI*(),Yue-Min CHEN,Ying-Yi CHEN
Online:
2018-04-20
Published:
2018-06-01
Yong BAO, Ying GAO, Xiao-Min ZENG, Ping YUAN, You-Tao SI, Yue-Min CHEN, Ying-Yi CHEN. Relationships between carbon and nitrogen contents and enzyme activities in soil of three typical subtropical forests in China[J]. Chin J Plant Ecol, 2018, 42(4): 508-516.
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URL: https://www.plant-ecology.com/EN/10.17521/cjpe.2017.0311
酶 Enzyme | 缩写 Abbreviation | 功能 Function | 底物 Substrate |
---|---|---|---|
β-葡萄糖苷酶 β-glucosidase | βG | 分解易降解碳 Decomposition of labile carbon | 4-甲基伞形酮-β-D-葡萄糖苷 4-methylumbelliferyl-β-D-glucoside |
纤维素水解酶 Cellulose hydrolysis | CBH | 分解易降解碳 Decomposition of labile carbon | 4-甲基伞形酮-β-D-纤维素二糖苷 4-methylumbelliferyl-β-D-cellobioside |
β-N-乙酰氨基葡萄糖苷酶 β-N-acetylglucosaminidase | NAG | 分解氮 Hydrolyze nitrogen | 4-甲基伞形酮-2-乙酰氨基-2-脱氧-β-D-吡喃葡萄糖苷 4-methylumbelliferyl-N-acetyl-β-D-glucosaminide |
多酚氧化酶 Phenol oxidase | PHO | 分解难降解碳 Decomposition of recalcitrant carbon | 二羟基苯 L-dihydroxyphenylalanine |
过氧化物酶 Peroxidase | PEO | 分解难降解碳 Decomposition of recalcitrant carbon | 二羟基苯 L-dihydroxyphenylalanine |
Table 1 The abbreviations, function and substrates of soil enzyme
酶 Enzyme | 缩写 Abbreviation | 功能 Function | 底物 Substrate |
---|---|---|---|
β-葡萄糖苷酶 β-glucosidase | βG | 分解易降解碳 Decomposition of labile carbon | 4-甲基伞形酮-β-D-葡萄糖苷 4-methylumbelliferyl-β-D-glucoside |
纤维素水解酶 Cellulose hydrolysis | CBH | 分解易降解碳 Decomposition of labile carbon | 4-甲基伞形酮-β-D-纤维素二糖苷 4-methylumbelliferyl-β-D-cellobioside |
β-N-乙酰氨基葡萄糖苷酶 β-N-acetylglucosaminidase | NAG | 分解氮 Hydrolyze nitrogen | 4-甲基伞形酮-2-乙酰氨基-2-脱氧-β-D-吡喃葡萄糖苷 4-methylumbelliferyl-N-acetyl-β-D-glucosaminide |
多酚氧化酶 Phenol oxidase | PHO | 分解难降解碳 Decomposition of recalcitrant carbon | 二羟基苯 L-dihydroxyphenylalanine |
过氧化物酶 Peroxidase | PEO | 分解难降解碳 Decomposition of recalcitrant carbon | 二羟基苯 L-dihydroxyphenylalanine |
林分类型 Forest type | pH | 含水率 Moisture (%) | 土壤总有机碳 Total soil organic carbon (g·kg-1) | 全氮 Total nitrogen (g·kg-1) | C:N | NH4+-N (mg·kg-1) | NO3--N (mg·kg-1) | 可溶性有机碳 Dissolved organic carbon (mg·kg-1) | 可溶性有机氮 Dissolved organic nitrogen (mg·kg-1) | |
---|---|---|---|---|---|---|---|---|---|---|
SF | 4.72 ± 0.18a | 27.24 ± 1.42b | 41.69 ± 1.46a | 2.43 ± 0.11b | 17.20 ± 0.50a | 80.17 ± 5.10a | 7.67 ± 1.93a | 87.47 ± 29.59a | 8.80 ± 2.28a | |
AR | 4.79 ± 0.10a | 35.02 ± 0.56a | 45.82 ± 5.64a | 2.89 ± 0.16a | 15.80 ± 1.03a | 92.40 ± 3.76a | 4.83 ± 2.80a | 76.98 ± 12.55a | 6.68 ± 2.28a | |
PM | 4.63 ± 0.06a | 28.79 ± 2.49b | 25.16 ± 0.52b | 1.83 ± 0.04c | 13.73 ± 0.59b | 54.47 ± 11.28b | 6.50 ± 0.24a | 26.55 ± 6.44b | 5.84 ± 1.46a |
Table 2 Main soil physical and chemical properties and soil available nutrients in different forest types (mean ± SD, n = 3)
林分类型 Forest type | pH | 含水率 Moisture (%) | 土壤总有机碳 Total soil organic carbon (g·kg-1) | 全氮 Total nitrogen (g·kg-1) | C:N | NH4+-N (mg·kg-1) | NO3--N (mg·kg-1) | 可溶性有机碳 Dissolved organic carbon (mg·kg-1) | 可溶性有机氮 Dissolved organic nitrogen (mg·kg-1) | |
---|---|---|---|---|---|---|---|---|---|---|
SF | 4.72 ± 0.18a | 27.24 ± 1.42b | 41.69 ± 1.46a | 2.43 ± 0.11b | 17.20 ± 0.50a | 80.17 ± 5.10a | 7.67 ± 1.93a | 87.47 ± 29.59a | 8.80 ± 2.28a | |
AR | 4.79 ± 0.10a | 35.02 ± 0.56a | 45.82 ± 5.64a | 2.89 ± 0.16a | 15.80 ± 1.03a | 92.40 ± 3.76a | 4.83 ± 2.80a | 76.98 ± 12.55a | 6.68 ± 2.28a | |
PM | 4.63 ± 0.06a | 28.79 ± 2.49b | 25.16 ± 0.52b | 1.83 ± 0.04c | 13.73 ± 0.59b | 54.47 ± 11.28b | 6.50 ± 0.24a | 26.55 ± 6.44b | 5.84 ± 1.46a |
Fig. 1 Aromatic index (AI) and humification index emission mode (HIXem) in different forests (mean ± SD, n = 3). SF, natural secondary forest of Castanopsis carlesii; AR, artificial-assisted natural regeneration forest of Castanopsis carlesii; PM, plantation of Pinus massoniana. Different lowercase letters indicate significant difference among different stands (p < 0.05).
林分类型 Forest type | βG (nmol·g-1·h-1) | CBH (nmol·g-1·h-1) | NAG (nmol·g-1·h-1) | PHO (μmol·g-1·h-1) | PEO (μmol·g-1·h-1) |
---|---|---|---|---|---|
SF | 38.93 ± 7.44a | 1.41 ± 0.29b | 36.42 ± 7.68b | 0.53 ± 0.37b | 14.61 ± 3.86a |
AR | 36.93 ± 6.72a | 3.49 ± 0.59a | 76.98 ± 20.43a | 0.25 ± 0.11b | 13.48 ± 3.74a |
PM | 23.86 ± 5.12b | 0.48 ± 0.16c | 38.94 ± 8.09b | 3.92 ± 0.52a | 20.70 ± 3.83a |
Table 3 Soil enzyme activities in different forest types (mean ± SD, n = 3)
林分类型 Forest type | βG (nmol·g-1·h-1) | CBH (nmol·g-1·h-1) | NAG (nmol·g-1·h-1) | PHO (μmol·g-1·h-1) | PEO (μmol·g-1·h-1) |
---|---|---|---|---|---|
SF | 38.93 ± 7.44a | 1.41 ± 0.29b | 36.42 ± 7.68b | 0.53 ± 0.37b | 14.61 ± 3.86a |
AR | 36.93 ± 6.72a | 3.49 ± 0.59a | 76.98 ± 20.43a | 0.25 ± 0.11b | 13.48 ± 3.74a |
PM | 23.86 ± 5.12b | 0.48 ± 0.16c | 38.94 ± 8.09b | 3.92 ± 0.52a | 20.70 ± 3.83a |
Fig. 2 Redundancy analysis (RDA) of the effect of soil environmental factors on soil enzyme activity in different forest types. SF1, SF2, SF3 represent three parallel replicates of the secondary broadleaved forests of Castanopsis carlesii plot; AR1, AR2, AR3 represent three parallel replicates of the Human-assisted naturally regenerated forests of Castanopsis carlesii plot; PM1, PM2, PM3 represent three parallel replicates representing the Human-assisted naturally regenerated forests of Pinus massoniana plots of Pinus massoniana plantation. DON, dissolved organic nitrogen; DOC, dissolved organic carbon; SOC, soil organic carbon; TN, total nitrogen. The notes of variables in lower right corner of the plot represents the corresponding proportion of environmental factors that have a significant effect on soil enzyme changes.
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