Negative effects of canopy N addition on soil organic carbon in wet season are primarily detected in uppermost soils of a subtropical forest
The seasonal differences of soil organic carbon (SOC) responding to N deposition have rarely been considered. In this study, two levels of canopy addition of N (25 and 50 kg N ha−1 yr−1; i.e., CAN25 and CAN50, respectively) and one control (CK) were designed in a subtropical forest to investigate th...
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| Format: | Article |
| Language: | English |
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Elsevier
2019-01-01
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| Series: | Global Ecology and Conservation |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2351989418304311 |
| _version_ | 1811270946554642432 |
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| author | Xiaofei Lu Wendan Ren Enqing Hou Lingling Zhang Dazhi Wen Zhanfeng Liu Yongbiao Lin Jun Wang Yuanwen Kuang |
| author_facet | Xiaofei Lu Wendan Ren Enqing Hou Lingling Zhang Dazhi Wen Zhanfeng Liu Yongbiao Lin Jun Wang Yuanwen Kuang |
| author_sort | Xiaofei Lu |
| collection | DOAJ |
| description | The seasonal differences of soil organic carbon (SOC) responding to N deposition have rarely been considered. In this study, two levels of canopy addition of N (25 and 50 kg N ha−1 yr−1; i.e., CAN25 and CAN50, respectively) and one control (CK) were designed in a subtropical forest to investigate the seasonal effects on the content of SOC and its fractions. The results showed that soil pH, the content of SOC and N were not significantly altered after 3 years of canopy N addition. However, in 0–5 cm soils, significant variations were observed in the proportion of the micro-aggregates (53–250 μm) and the clay microstructures (<53 μm), as well as in the content of macro-aggregates C (>250 μm), microbial biomass C, readily oxidized C, and recalcitrant organic C in the wet season. The findings implied that atmospheric N deposition may have negative and no effects on SOC in subtropical evergreen forest in the wet and the dry season, respectively. Although the effects were primarily detected in the uppermost soils, the different responses of SOC to atmospheric N deposition between the dry and the wet seasons should be considered in the future modeling research. Keywords: Atmospheric N deposition, Canopy N addition, Seasonal effect, Soil organic carbon, Subtropical forest |
| first_indexed | 2024-04-12T22:11:18Z |
| format | Article |
| id | doaj.art-cf08e46a3d1b4950be0b24ac97fefa20 |
| institution | Directory Open Access Journal |
| issn | 2351-9894 |
| language | English |
| last_indexed | 2024-04-12T22:11:18Z |
| publishDate | 2019-01-01 |
| publisher | Elsevier |
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| series | Global Ecology and Conservation |
| spelling | doaj.art-cf08e46a3d1b4950be0b24ac97fefa202022-12-22T03:14:45ZengElsevierGlobal Ecology and Conservation2351-98942019-01-0117Negative effects of canopy N addition on soil organic carbon in wet season are primarily detected in uppermost soils of a subtropical forestXiaofei Lu0Wendan Ren1Enqing Hou2Lingling Zhang3Dazhi Wen4Zhanfeng Liu5Yongbiao Lin6Jun Wang7Yuanwen Kuang8Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China; Guangdong Provincial Key Laboratory of Applied Botany, Guangzhou, 510650, China; College of Resources and Environment, University of Chinese Academy of Science, Beijing, 100049, ChinaKey Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China; Guangdong Provincial Key Laboratory of Applied Botany, Guangzhou, 510650, China; College of Resources and Environment, University of Chinese Academy of Science, Beijing, 100049, ChinaKey Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China; Guangdong Provincial Key Laboratory of Applied Botany, Guangzhou, 510650, ChinaKey Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China; Guangdong Provincial Key Laboratory of Applied Botany, Guangzhou, 510650, ChinaKey Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China; Guangdong Provincial Key Laboratory of Applied Botany, Guangzhou, 510650, ChinaKey Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China; Guangdong Provincial Key Laboratory of Applied Botany, Guangzhou, 510650, ChinaKey Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China; Guangdong Provincial Key Laboratory of Applied Botany, Guangzhou, 510650, ChinaKey Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China; Guangdong Provincial Key Laboratory of Applied Botany, Guangzhou, 510650, ChinaKey Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China; Guangdong Provincial Key Laboratory of Applied Botany, Guangzhou, 510650, China; Corresponding author. Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China.The seasonal differences of soil organic carbon (SOC) responding to N deposition have rarely been considered. In this study, two levels of canopy addition of N (25 and 50 kg N ha−1 yr−1; i.e., CAN25 and CAN50, respectively) and one control (CK) were designed in a subtropical forest to investigate the seasonal effects on the content of SOC and its fractions. The results showed that soil pH, the content of SOC and N were not significantly altered after 3 years of canopy N addition. However, in 0–5 cm soils, significant variations were observed in the proportion of the micro-aggregates (53–250 μm) and the clay microstructures (<53 μm), as well as in the content of macro-aggregates C (>250 μm), microbial biomass C, readily oxidized C, and recalcitrant organic C in the wet season. The findings implied that atmospheric N deposition may have negative and no effects on SOC in subtropical evergreen forest in the wet and the dry season, respectively. Although the effects were primarily detected in the uppermost soils, the different responses of SOC to atmospheric N deposition between the dry and the wet seasons should be considered in the future modeling research. Keywords: Atmospheric N deposition, Canopy N addition, Seasonal effect, Soil organic carbon, Subtropical foresthttp://www.sciencedirect.com/science/article/pii/S2351989418304311 |
| spellingShingle | Xiaofei Lu Wendan Ren Enqing Hou Lingling Zhang Dazhi Wen Zhanfeng Liu Yongbiao Lin Jun Wang Yuanwen Kuang Negative effects of canopy N addition on soil organic carbon in wet season are primarily detected in uppermost soils of a subtropical forest Global Ecology and Conservation |
| title | Negative effects of canopy N addition on soil organic carbon in wet season are primarily detected in uppermost soils of a subtropical forest |
| title_full | Negative effects of canopy N addition on soil organic carbon in wet season are primarily detected in uppermost soils of a subtropical forest |
| title_fullStr | Negative effects of canopy N addition on soil organic carbon in wet season are primarily detected in uppermost soils of a subtropical forest |
| title_full_unstemmed | Negative effects of canopy N addition on soil organic carbon in wet season are primarily detected in uppermost soils of a subtropical forest |
| title_short | Negative effects of canopy N addition on soil organic carbon in wet season are primarily detected in uppermost soils of a subtropical forest |
| title_sort | negative effects of canopy n addition on soil organic carbon in wet season are primarily detected in uppermost soils of a subtropical forest |
| url | http://www.sciencedirect.com/science/article/pii/S2351989418304311 |
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