Links between chemical composition of soil organic matter and soil enzyme activity in alpine grassland ecosystems of the Tibetan Plateau
Soil enzymes play a key role in soil organic matter dynamics in terrestrial ecosystems; however, the relationship between soil enzyme activity and the chemical composition of soil organic matter remains unclear. We analysed the soil organic matter (SOM) of five types of alpine grassland ecosystems i...
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ftchinacadscimhe:oai:ir.imde.ac.cn:131551/56813 2023-05-15T17:58:20+02:00 Links between chemical composition of soil organic matter and soil enzyme activity in alpine grassland ecosystems of the Tibetan Plateau Wang, Ziwei Ma, Shuqin Hu, Yang Chen, Youchao Jiang, Hongmao Duan, Baoli Lu, Xuyang 2022-11-01 http://ir.imde.ac.cn/handle/131551/56813 https://doi.org/10.1016/j.catena.2022.106565 英语 eng ELSEVIER CATENA http://ir.imde.ac.cn/handle/131551/56813 doi:10.1016/j.catena.2022.106565 Soil enzyme activity Chemical composition of soil organic matter composition N -compounds Alpine grassland Tibetan Plateau Pyrolysis -gas chromatography -mass spectrom etry (Py-GC MS) MICROBIAL COMMUNITY COMPOSITION CARBON USE EFFICIENCY TERRESTRIAL ECOSYSTEMS FOREST SOILS NITROGEN CHEMISTRY PLANT PERMAFROST LITTER STOICHIOMETRY Geology Agriculture Water Resources Geosciences Multidisciplinary Soil Science 期刊论文 2022 ftchinacadscimhe https://doi.org/10.1016/j.catena.2022.106565 2022-12-19T18:29:47Z Soil enzymes play a key role in soil organic matter dynamics in terrestrial ecosystems; however, the relationship between soil enzyme activity and the chemical composition of soil organic matter remains unclear. We analysed the soil organic matter (SOM) of five types of alpine grassland ecosystems in the Tibetan Plateau at the molecular level using pyrolysis gas chromatography/mass spectrometry (Py-GC/MS), which allowed us to examine the relationship between the patterns of enzyme activities and SOM composition. We found that the level of activity of carbon (C)-cycling enzymes (invertase, beta-1,4-glucosidase, polyphenol oxidase, and peroxidase), nitrogen (N)cycling enzymes (arylamidase), and phosphorus (P)-cycling enzyme (alkaline phosphatase) was significantly different among the five grassland ecosystems. In addition, we found significant variation among the different grassland ecosystems in terms of the activity of enzymes involved in C-cycling less so with those enzymes involved in N-cycling. In general, SOM was dominated by N-compounds (-32.47-51.76%), polysaccharides (-10.67-20.42%), and fatty acids (-7.03-20.33%) in the different alpine grasslands. The most abundant compounds in SOM were D-alanine (10.06-20.77%), 9-octadecenamide, (Z) (4.43-9.68%), and 13-docosenamide (1.52-14.76%). Correlation analysis showed that the N-compound abundance was negatively correlated with nitrate reductase. Polysaccharides were positively correlated with activity levels of invertase and cellulase. Fatty acids were positively correlated with polyphenol oxidase activity and negatively correlated with alkaline phosphatase activity. Some abundant compounds consistently showed strong correlations with activity levels of invertase and cellulase, including toluene, styrene, benzene, phenol, furfural, pyrrole, p-cresol, 2-methylphenylacetylene and indole (positive correlation), 13-docosenamide, dodecanamide and o-hydroxybiphenyl (negative correlation). Furthermore, Gram-positive and Gram-negative bacteria also play a significant ... Report permafrost IMHE OpenIR (Institute of Mountain Hazards and Environment, Chinese Academy of Sciences) CATENA 218 106565 |
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Open Polar |
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IMHE OpenIR (Institute of Mountain Hazards and Environment, Chinese Academy of Sciences) |
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ftchinacadscimhe |
language |
English |
topic |
Soil enzyme activity Chemical composition of soil organic matter composition N -compounds Alpine grassland Tibetan Plateau Pyrolysis -gas chromatography -mass spectrom etry (Py-GC MS) MICROBIAL COMMUNITY COMPOSITION CARBON USE EFFICIENCY TERRESTRIAL ECOSYSTEMS FOREST SOILS NITROGEN CHEMISTRY PLANT PERMAFROST LITTER STOICHIOMETRY Geology Agriculture Water Resources Geosciences Multidisciplinary Soil Science |
spellingShingle |
Soil enzyme activity Chemical composition of soil organic matter composition N -compounds Alpine grassland Tibetan Plateau Pyrolysis -gas chromatography -mass spectrom etry (Py-GC MS) MICROBIAL COMMUNITY COMPOSITION CARBON USE EFFICIENCY TERRESTRIAL ECOSYSTEMS FOREST SOILS NITROGEN CHEMISTRY PLANT PERMAFROST LITTER STOICHIOMETRY Geology Agriculture Water Resources Geosciences Multidisciplinary Soil Science Wang, Ziwei Ma, Shuqin Hu, Yang Chen, Youchao Jiang, Hongmao Duan, Baoli Lu, Xuyang Links between chemical composition of soil organic matter and soil enzyme activity in alpine grassland ecosystems of the Tibetan Plateau |
topic_facet |
Soil enzyme activity Chemical composition of soil organic matter composition N -compounds Alpine grassland Tibetan Plateau Pyrolysis -gas chromatography -mass spectrom etry (Py-GC MS) MICROBIAL COMMUNITY COMPOSITION CARBON USE EFFICIENCY TERRESTRIAL ECOSYSTEMS FOREST SOILS NITROGEN CHEMISTRY PLANT PERMAFROST LITTER STOICHIOMETRY Geology Agriculture Water Resources Geosciences Multidisciplinary Soil Science |
description |
Soil enzymes play a key role in soil organic matter dynamics in terrestrial ecosystems; however, the relationship between soil enzyme activity and the chemical composition of soil organic matter remains unclear. We analysed the soil organic matter (SOM) of five types of alpine grassland ecosystems in the Tibetan Plateau at the molecular level using pyrolysis gas chromatography/mass spectrometry (Py-GC/MS), which allowed us to examine the relationship between the patterns of enzyme activities and SOM composition. We found that the level of activity of carbon (C)-cycling enzymes (invertase, beta-1,4-glucosidase, polyphenol oxidase, and peroxidase), nitrogen (N)cycling enzymes (arylamidase), and phosphorus (P)-cycling enzyme (alkaline phosphatase) was significantly different among the five grassland ecosystems. In addition, we found significant variation among the different grassland ecosystems in terms of the activity of enzymes involved in C-cycling less so with those enzymes involved in N-cycling. In general, SOM was dominated by N-compounds (-32.47-51.76%), polysaccharides (-10.67-20.42%), and fatty acids (-7.03-20.33%) in the different alpine grasslands. The most abundant compounds in SOM were D-alanine (10.06-20.77%), 9-octadecenamide, (Z) (4.43-9.68%), and 13-docosenamide (1.52-14.76%). Correlation analysis showed that the N-compound abundance was negatively correlated with nitrate reductase. Polysaccharides were positively correlated with activity levels of invertase and cellulase. Fatty acids were positively correlated with polyphenol oxidase activity and negatively correlated with alkaline phosphatase activity. Some abundant compounds consistently showed strong correlations with activity levels of invertase and cellulase, including toluene, styrene, benzene, phenol, furfural, pyrrole, p-cresol, 2-methylphenylacetylene and indole (positive correlation), 13-docosenamide, dodecanamide and o-hydroxybiphenyl (negative correlation). Furthermore, Gram-positive and Gram-negative bacteria also play a significant ... |
format |
Report |
author |
Wang, Ziwei Ma, Shuqin Hu, Yang Chen, Youchao Jiang, Hongmao Duan, Baoli Lu, Xuyang |
author_facet |
Wang, Ziwei Ma, Shuqin Hu, Yang Chen, Youchao Jiang, Hongmao Duan, Baoli Lu, Xuyang |
author_sort |
Wang, Ziwei |
title |
Links between chemical composition of soil organic matter and soil enzyme activity in alpine grassland ecosystems of the Tibetan Plateau |
title_short |
Links between chemical composition of soil organic matter and soil enzyme activity in alpine grassland ecosystems of the Tibetan Plateau |
title_full |
Links between chemical composition of soil organic matter and soil enzyme activity in alpine grassland ecosystems of the Tibetan Plateau |
title_fullStr |
Links between chemical composition of soil organic matter and soil enzyme activity in alpine grassland ecosystems of the Tibetan Plateau |
title_full_unstemmed |
Links between chemical composition of soil organic matter and soil enzyme activity in alpine grassland ecosystems of the Tibetan Plateau |
title_sort |
links between chemical composition of soil organic matter and soil enzyme activity in alpine grassland ecosystems of the tibetan plateau |
publisher |
ELSEVIER |
publishDate |
2022 |
url |
http://ir.imde.ac.cn/handle/131551/56813 https://doi.org/10.1016/j.catena.2022.106565 |
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permafrost |
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permafrost |
op_relation |
CATENA http://ir.imde.ac.cn/handle/131551/56813 doi:10.1016/j.catena.2022.106565 |
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https://doi.org/10.1016/j.catena.2022.106565 |
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106565 |
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