Biochar amendment decreases soil microbial biomass and increases bacterial diversity in Moso bamboo (Phyllostachys edulis) plantations under simulated nitrogen deposition
Biochar amendment has been proposed as a strategy to improve acidic soils after overuse of nitrogen fertilizers. However, little is known of the role of biochar in soil microbial biomass carbon (MBC) and bacterial community structure and diversity after soil acidification induced by nitrogen (N) dep...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2018-01-01
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| Series: | Environmental Research Letters |
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| Online Access: | https://doi.org/10.1088/1748-9326/aab53a |
| _version_ | 1797748285713154048 |
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| author | Quan Li Zhaofeng Lei Xinzhang Song Zhiting Zhang Yeqing Ying Changhui Peng |
| author_facet | Quan Li Zhaofeng Lei Xinzhang Song Zhiting Zhang Yeqing Ying Changhui Peng |
| author_sort | Quan Li |
| collection | DOAJ |
| description | Biochar amendment has been proposed as a strategy to improve acidic soils after overuse of nitrogen fertilizers. However, little is known of the role of biochar in soil microbial biomass carbon (MBC) and bacterial community structure and diversity after soil acidification induced by nitrogen (N) deposition. Using high-throughput sequencing of the 16S rRNA gene, we determined the effects of biochar amendment (BC0, 0 t bamboo biochar ha ^−1 ; BC20, 20 t bamboo biochar ha ^−1 ; and BC40, 40 t bamboo biochar ha ^−1 ) on the soil bacterial community structure and diversity in Moso bamboo plantations that had received simulated N deposition (N30, 30 kg N ha ^−1 yr ^−1 ; N60, 60 kg N ha ^−1 yr ^−1 ; N90, 90 kg N ha ^−1 yr ^−1 ; and N-free) for 21 months. After treatment of N-free plots, BC20 significantly increased soil MBC and bacterial diversity, while BC40 significantly decreased soil MBC but increased bacterial diversity. When used to amend N30 and N60 plots, biochar significantly decreased soil MBC and the reducing effect increased with biochar amendment amount. However, these significant effects were not observed in N90 plots. Under N deposition, biochar amendment largely increased soil bacterial diversity, and these effects depended on the rates of N deposition and biochar amendment. Soil bacterial diversity was significantly related to the soil C/N ratio, pH, and soil organic carbon content. These findings suggest an optimal approach for using biochar to offset the effects of N deposition in plantation soils and provide a new perspective for understanding the potential role of biochar amendments in plantation soil. |
| first_indexed | 2024-03-12T16:02:42Z |
| format | Article |
| id | doaj.art-859a96dd37ea4f309f707372582ab566 |
| institution | Directory Open Access Journal |
| issn | 1748-9326 |
| language | English |
| last_indexed | 2024-03-12T16:02:42Z |
| publishDate | 2018-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Environmental Research Letters |
| spelling | doaj.art-859a96dd37ea4f309f707372582ab5662023-08-09T14:32:57ZengIOP PublishingEnvironmental Research Letters1748-93262018-01-0113404402910.1088/1748-9326/aab53aBiochar amendment decreases soil microbial biomass and increases bacterial diversity in Moso bamboo (Phyllostachys edulis) plantations under simulated nitrogen depositionQuan Li0https://orcid.org/0000-0001-9316-591XZhaofeng Lei1Xinzhang Song2Zhiting Zhang3Yeqing Ying4Changhui Peng5State Key Laboratory of Subtropical Silviculture , Zhejiang A&F University, Hangzhou, 311300, People’s Republic of ChinaState Key Laboratory of Subtropical Silviculture , Zhejiang A&F University, Hangzhou, 311300, People’s Republic of ChinaState Key Laboratory of Subtropical Silviculture , Zhejiang A&F University, Hangzhou, 311300, People’s Republic of China; Tianmu Mountain Forest Ecosystem Research Station , Hangzhou 311300, People’s Republic of China; Author to whom any correspondence should be addressed.Hebei North College , Zhangjiakou, 075000, People’s Republic of ChinaState Key Laboratory of Subtropical Silviculture , Zhejiang A&F University, Hangzhou, 311300, People’s Republic of ChinaState Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau , Northwest A&F University, Yangling, 712100, People’s Republic of ChinaBiochar amendment has been proposed as a strategy to improve acidic soils after overuse of nitrogen fertilizers. However, little is known of the role of biochar in soil microbial biomass carbon (MBC) and bacterial community structure and diversity after soil acidification induced by nitrogen (N) deposition. Using high-throughput sequencing of the 16S rRNA gene, we determined the effects of biochar amendment (BC0, 0 t bamboo biochar ha ^−1 ; BC20, 20 t bamboo biochar ha ^−1 ; and BC40, 40 t bamboo biochar ha ^−1 ) on the soil bacterial community structure and diversity in Moso bamboo plantations that had received simulated N deposition (N30, 30 kg N ha ^−1 yr ^−1 ; N60, 60 kg N ha ^−1 yr ^−1 ; N90, 90 kg N ha ^−1 yr ^−1 ; and N-free) for 21 months. After treatment of N-free plots, BC20 significantly increased soil MBC and bacterial diversity, while BC40 significantly decreased soil MBC but increased bacterial diversity. When used to amend N30 and N60 plots, biochar significantly decreased soil MBC and the reducing effect increased with biochar amendment amount. However, these significant effects were not observed in N90 plots. Under N deposition, biochar amendment largely increased soil bacterial diversity, and these effects depended on the rates of N deposition and biochar amendment. Soil bacterial diversity was significantly related to the soil C/N ratio, pH, and soil organic carbon content. These findings suggest an optimal approach for using biochar to offset the effects of N deposition in plantation soils and provide a new perspective for understanding the potential role of biochar amendments in plantation soil.https://doi.org/10.1088/1748-9326/aab53aPhyllostachys edulisbiocharmicrobial community structure and diversitymicrobial biomasssimulated nitrogen deposition |
| spellingShingle | Quan Li Zhaofeng Lei Xinzhang Song Zhiting Zhang Yeqing Ying Changhui Peng Biochar amendment decreases soil microbial biomass and increases bacterial diversity in Moso bamboo (Phyllostachys edulis) plantations under simulated nitrogen deposition Environmental Research Letters Phyllostachys edulis biochar microbial community structure and diversity microbial biomass simulated nitrogen deposition |
| title | Biochar amendment decreases soil microbial biomass and increases bacterial diversity in Moso bamboo (Phyllostachys edulis) plantations under simulated nitrogen deposition |
| title_full | Biochar amendment decreases soil microbial biomass and increases bacterial diversity in Moso bamboo (Phyllostachys edulis) plantations under simulated nitrogen deposition |
| title_fullStr | Biochar amendment decreases soil microbial biomass and increases bacterial diversity in Moso bamboo (Phyllostachys edulis) plantations under simulated nitrogen deposition |
| title_full_unstemmed | Biochar amendment decreases soil microbial biomass and increases bacterial diversity in Moso bamboo (Phyllostachys edulis) plantations under simulated nitrogen deposition |
| title_short | Biochar amendment decreases soil microbial biomass and increases bacterial diversity in Moso bamboo (Phyllostachys edulis) plantations under simulated nitrogen deposition |
| title_sort | biochar amendment decreases soil microbial biomass and increases bacterial diversity in moso bamboo phyllostachys edulis plantations under simulated nitrogen deposition |
| topic | Phyllostachys edulis biochar microbial community structure and diversity microbial biomass simulated nitrogen deposition |
| url | https://doi.org/10.1088/1748-9326/aab53a |
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