Links between chemical composition of soil organic matter and soil enzyme activity in alpine grassland ecosystems of the Tibetan Plateau
文献类型:期刊论文
作者 | Wang, Ziwei3,4; Ma, Shuqin2; Hu, Yang3,4; Chen, Youchao1; Jiang, Hongmao3,4; Duan, Baoli4; Lu, Xuyang4 |
刊名 | CATENA |
出版日期 | 2022-11-01 |
卷号 | 218页码:13 |
ISSN号 | 0341-8162 |
关键词 | 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) |
DOI | 10.1016/j.catena.2022.106565 |
英文摘要 | 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 role in regulating SOM-enzyme interactions. These findings confirmed the strong effects of SOM composition on the activity of invertase and cellulase, indicating that invertase and cellulase play an important role in regulating SOM to some extent, resulting in complex interactions among organic-enzyme-microbes. |
WOS关键词 | MICROBIAL COMMUNITY COMPOSITION ; CARBON USE EFFICIENCY ; TERRESTRIAL ECOSYSTEMS ; FOREST SOILS ; NITROGEN ; CHEMISTRY ; PLANT ; PERMAFROST ; LITTER ; STOICHIOMETRY |
资助项目 | National Natural Science Foundation of China[41877338] ; National Natural Science Foundation of China[31901198] |
WOS研究方向 | Geology ; Agriculture ; Water Resources |
语种 | 英语 |
出版者 | ELSEVIER |
WOS记录号 | WOS:000848328300002 |
资助机构 | National Natural Science Foundation of China |
源URL | [http://ir.imde.ac.cn/handle/131551/56813] |
专题 | 成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室 |
通讯作者 | Lu, Xuyang |
作者单位 | 1.Zhejiang A&F Univ, Coll Environm & Resource Sci, Hangzhou 311300, Peoples R China 2.Henan Normal Univ, Coll Tourism, Xinxiang 453007, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610299, Peoples R China |
推荐引用方式 GB/T 7714 | Wang, Ziwei,Ma, Shuqin,Hu, Yang,et al. Links between chemical composition of soil organic matter and soil enzyme activity in alpine grassland ecosystems of the Tibetan Plateau[J]. CATENA,2022,218:13. |
APA | Wang, Ziwei.,Ma, Shuqin.,Hu, Yang.,Chen, Youchao.,Jiang, Hongmao.,...&Lu, Xuyang.(2022).Links between chemical composition of soil organic matter and soil enzyme activity in alpine grassland ecosystems of the Tibetan Plateau.CATENA,218,13. |
MLA | Wang, Ziwei,et al."Links between chemical composition of soil organic matter and soil enzyme activity in alpine grassland ecosystems of the Tibetan Plateau".CATENA 218(2022):13. |
入库方式: OAI收割
来源:成都山地灾害与环境研究所
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