Introduction of Dalbergia odorifera enhances nitrogen absorption on Eucalyptus through stimulating microbially mediated soil nitrogen-cycling
Abstract Background There is substantial evidence that Eucalyptus for nitrogen (N) absorption and increasing the growth benefit from the introduction of N-fixing species, but the underlying mechanisms for microbially mediated soil N cycling remains unclear. Methods We investigated the changes of soi...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2021-09-01
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| Series: | Forest Ecosystems |
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| Online Access: | https://doi.org/10.1186/s40663-021-00339-3 |
| _version_ | 1797966451320029184 |
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| author | Xianyu Yao Qianchun Zhang Haiju Zhou Zhi Nong Shaoming Ye Qi Deng |
| author_facet | Xianyu Yao Qianchun Zhang Haiju Zhou Zhi Nong Shaoming Ye Qi Deng |
| author_sort | Xianyu Yao |
| collection | DOAJ |
| description | Abstract Background There is substantial evidence that Eucalyptus for nitrogen (N) absorption and increasing the growth benefit from the introduction of N-fixing species, but the underlying mechanisms for microbially mediated soil N cycling remains unclear. Methods We investigated the changes of soil pH, soil water content (SWC), soil organic carbon (SOC), total N (TN), inorganic N (NH4 +-N and NO3 −-N), microbial biomass and three N-degrading enzyme activities as well as the biomass and N productivity of Eucalyptus between a pure Eucalyptus urophylla × grandis plantation (PP) and a mixed Dalbergia odorifera and Eucalyptus plantation (MP) in Guangxi Zhuang Autonomous Region, China. Results Compared with the PP site, soil pH, SWC, SOC and TN in both seasons were significantly higher at the MP site, which in turn enhanced microbial biomass and the activities of soil N-degrading enzymes. The stimulated microbial activity at the MP site likely accelerate soil N mineralization, providing more available N (NH4 +-N in both seasons and NO3 −-N in the wet-hot season) for Eucalyptus absorption. Overall, the N productivity of Eucalyptus at the MP site was increased by 19.7% and 21.9%, promoting the biomass increases of 15.1% and 19.2% in the dry-cold season and wet-hot season, respectively. Conclusion Our results reveal the importance of microbially mediated soil N cycling in the N absorption on Eucalyptus. Introduction of D. odorifera enhances Eucalyptus biomass and N productivity, improve soil N availability and increased soil C and N concentration, which hence can be considered to be an effective sustainable management option of Eucalyptus plantations. |
| first_indexed | 2024-04-11T02:15:46Z |
| format | Article |
| id | doaj.art-14f0d1e33a1d4715ac9cecba2379d465 |
| institution | Directory Open Access Journal |
| issn | 2197-5620 |
| language | English |
| last_indexed | 2024-04-11T02:15:46Z |
| publishDate | 2021-09-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Forest Ecosystems |
| spelling | doaj.art-14f0d1e33a1d4715ac9cecba2379d4652023-01-03T01:03:10ZengKeAi Communications Co., Ltd.Forest Ecosystems2197-56202021-09-018111210.1186/s40663-021-00339-3Introduction of Dalbergia odorifera enhances nitrogen absorption on Eucalyptus through stimulating microbially mediated soil nitrogen-cyclingXianyu Yao0Qianchun Zhang1Haiju Zhou2Zhi Nong3Shaoming Ye4Qi Deng5Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of SciencesState Key Laboratory of Conservation and Utilization of Subtropical Agro-bioresources, College of Forestry, Guangxi UniversityState Key Laboratory of Conservation and Utilization of Subtropical Agro-bioresources, College of Forestry, Guangxi UniversityExperimental Center of Topical Forestry, Chinese Academy of ForestryState Key Laboratory of Conservation and Utilization of Subtropical Agro-bioresources, College of Forestry, Guangxi UniversityKey Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of SciencesAbstract Background There is substantial evidence that Eucalyptus for nitrogen (N) absorption and increasing the growth benefit from the introduction of N-fixing species, but the underlying mechanisms for microbially mediated soil N cycling remains unclear. Methods We investigated the changes of soil pH, soil water content (SWC), soil organic carbon (SOC), total N (TN), inorganic N (NH4 +-N and NO3 −-N), microbial biomass and three N-degrading enzyme activities as well as the biomass and N productivity of Eucalyptus between a pure Eucalyptus urophylla × grandis plantation (PP) and a mixed Dalbergia odorifera and Eucalyptus plantation (MP) in Guangxi Zhuang Autonomous Region, China. Results Compared with the PP site, soil pH, SWC, SOC and TN in both seasons were significantly higher at the MP site, which in turn enhanced microbial biomass and the activities of soil N-degrading enzymes. The stimulated microbial activity at the MP site likely accelerate soil N mineralization, providing more available N (NH4 +-N in both seasons and NO3 −-N in the wet-hot season) for Eucalyptus absorption. Overall, the N productivity of Eucalyptus at the MP site was increased by 19.7% and 21.9%, promoting the biomass increases of 15.1% and 19.2% in the dry-cold season and wet-hot season, respectively. Conclusion Our results reveal the importance of microbially mediated soil N cycling in the N absorption on Eucalyptus. Introduction of D. odorifera enhances Eucalyptus biomass and N productivity, improve soil N availability and increased soil C and N concentration, which hence can be considered to be an effective sustainable management option of Eucalyptus plantations.https://doi.org/10.1186/s40663-021-00339-3Eucalyptus plantationsSoil physical-chemical propertiesMicrobial biomassSoil enzyme activitiesNitrogen availability |
| spellingShingle | Xianyu Yao Qianchun Zhang Haiju Zhou Zhi Nong Shaoming Ye Qi Deng Introduction of Dalbergia odorifera enhances nitrogen absorption on Eucalyptus through stimulating microbially mediated soil nitrogen-cycling Forest Ecosystems Eucalyptus plantations Soil physical-chemical properties Microbial biomass Soil enzyme activities Nitrogen availability |
| title | Introduction of Dalbergia odorifera enhances nitrogen absorption on Eucalyptus through stimulating microbially mediated soil nitrogen-cycling |
| title_full | Introduction of Dalbergia odorifera enhances nitrogen absorption on Eucalyptus through stimulating microbially mediated soil nitrogen-cycling |
| title_fullStr | Introduction of Dalbergia odorifera enhances nitrogen absorption on Eucalyptus through stimulating microbially mediated soil nitrogen-cycling |
| title_full_unstemmed | Introduction of Dalbergia odorifera enhances nitrogen absorption on Eucalyptus through stimulating microbially mediated soil nitrogen-cycling |
| title_short | Introduction of Dalbergia odorifera enhances nitrogen absorption on Eucalyptus through stimulating microbially mediated soil nitrogen-cycling |
| title_sort | introduction of dalbergia odorifera enhances nitrogen absorption on eucalyptus through stimulating microbially mediated soil nitrogen cycling |
| topic | Eucalyptus plantations Soil physical-chemical properties Microbial biomass Soil enzyme activities Nitrogen availability |
| url | https://doi.org/10.1186/s40663-021-00339-3 |
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