Carbon and nutrient limitations of soil microbial metabolism in Quercus aquifolioides forest ecosystems along a precipitation gradient on the eastern Qinghai-Tibetan Plateau
Aims The response of soil microbial metabolic limitation in forest ecosystems to various factors remains poorly understood. The purpose of the study was to reveal the characteristics of microbial metabolic limitation in soil at the regional scale and the possible influencing factors. Methods The vector analysis of enzyme activities was used to study the relative soil microbial metabolic limitation characteristics of Quercus aquifolioides forest ecosystems along a mean annual precipitation gradient (MAP, 650 mm–1160 mm). Results The enzyme activities as well as their partial stoichiometric ratios had negative linear relationships with MAP. Soil microbial metabolism of the study area was limited mainly by carbon (C) and phosphorus (P) and partially by C and nitrogen (N). The C limitation showed a trend of first increasing slightly and then decreasing significantly along the MAP gradient, while N/P limitation did not show an obvious trend. Relative limitation of microbial metabolism was related closely to soil pH and nutrients, where C limitation was affected by soil pH, climatic factors, soil nutrient characteristics and topographic factor, and N/P limitation was affected by soil pH, topographic factor, diameter at breast height of the trees (DBH) and soil nutrient characteristics. In addition, the linear relationship between soil organic matter (SOM) and N limitation was significant, and it was inferred that the degree of N limitation might affect the stability of SOM and C stocks. Conclusions Microbial C limitation was regulated by MAP, and soil properties were important drivers of both C and N/P limitations..
| Medienart: |
Artikel |
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| Erscheinungsjahr: |
2023 |
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| Erschienen: |
2023 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:488 |
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| Enthalten in: |
Plant and soil - 488(2023), 1-2 vom: 03. März, Seite 291-304 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Cao, Xiangwen [VerfasserIn] |
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| Links: |
Volltext [lizenzpflichtig] |
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| Themen: |
Ecoenzymatic stoichiometry |
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| Anmerkungen: |
© The Author(s), under exclusive licence to Springer Nature Switzerland AG 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law. |
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| doi: |
10.1007/s11104-023-05971-2 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
OLC2145063676 |
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| 245 | 1 | 0 | |a Carbon and nutrient limitations of soil microbial metabolism in Quercus aquifolioides forest ecosystems along a precipitation gradient on the eastern Qinghai-Tibetan Plateau |
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| 520 | |a Aims The response of soil microbial metabolic limitation in forest ecosystems to various factors remains poorly understood. The purpose of the study was to reveal the characteristics of microbial metabolic limitation in soil at the regional scale and the possible influencing factors. Methods The vector analysis of enzyme activities was used to study the relative soil microbial metabolic limitation characteristics of Quercus aquifolioides forest ecosystems along a mean annual precipitation gradient (MAP, 650 mm–1160 mm). Results The enzyme activities as well as their partial stoichiometric ratios had negative linear relationships with MAP. Soil microbial metabolism of the study area was limited mainly by carbon (C) and phosphorus (P) and partially by C and nitrogen (N). The C limitation showed a trend of first increasing slightly and then decreasing significantly along the MAP gradient, while N/P limitation did not show an obvious trend. Relative limitation of microbial metabolism was related closely to soil pH and nutrients, where C limitation was affected by soil pH, climatic factors, soil nutrient characteristics and topographic factor, and N/P limitation was affected by soil pH, topographic factor, diameter at breast height of the trees (DBH) and soil nutrient characteristics. In addition, the linear relationship between soil organic matter (SOM) and N limitation was significant, and it was inferred that the degree of N limitation might affect the stability of SOM and C stocks. Conclusions Microbial C limitation was regulated by MAP, and soil properties were important drivers of both C and N/P limitations. | ||
| 650 | 4 | |a Extracellular enzyme | |
| 650 | 4 | |a Ecoenzymatic stoichiometry | |
| 650 | 4 | |a Microbial resource limitation | |
| 650 | 4 | |a Precipitation | |
| 650 | 4 | |a Soil property | |
| 650 | 4 | |a forest | |
| 700 | 1 | |a Shi, Zuomin |0 (orcid)0000-0002-7985-7917 |4 aut | |
| 700 | 1 | |a Chen, Jian |4 aut | |
| 700 | 1 | |a Liu, Shun |4 aut | |
| 700 | 1 | |a Zhang, Miaomiao |4 aut | |
| 700 | 1 | |a Chen, Miao |4 aut | |
| 700 | 1 | |a Wu, Jiamei |4 aut | |
| 700 | 1 | |a Xu, Gexi |4 aut | |
| 700 | 1 | |a Xing, Hongshuang |4 aut | |
| 700 | 1 | |a Li, Feifan |4 aut | |
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