Effects of long-term nitrogen addition on the δ15N and δ13C of Larix gmelinii and soil in a boreal forest
Abstract Background Natural abundance of carbon (C) and nitrogen (N) stable isotope ratios (δ13C and δ15N) has been used to indicate the state and cycle of ecosystem C and N. However, it is still unclear how C and N cycle of boreal forests respond to the N deposition. Results We conducted an 8-year...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2022-05-01
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| Series: | Ecological Processes |
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| Online Access: | https://doi.org/10.1186/s13717-022-00382-0 |
| _version_ | 1828323428963188736 |
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| author | Guancheng Liu Zhiwei Yin Guoyong Yan Shuang Liu Xiaochun Wang Yajuan Xing Qinggui Wang |
| author_facet | Guancheng Liu Zhiwei Yin Guoyong Yan Shuang Liu Xiaochun Wang Yajuan Xing Qinggui Wang |
| author_sort | Guancheng Liu |
| collection | DOAJ |
| description | Abstract Background Natural abundance of carbon (C) and nitrogen (N) stable isotope ratios (δ13C and δ15N) has been used to indicate the state and cycle of ecosystem C and N. However, it is still unclear how C and N cycle of boreal forests respond to the N deposition. Results We conducted an 8-year continuous N addition field experiment in a Larix gmelinii forest in Greater Khingan Mountains, Northeast China. Four N treatments (0, 25, 50, 75 kg N ha−1 year−1) were built. The effects of N addition on the δ13C and δ15N of needle, branch, bark, and fine root of Larix gmelinii and soil were studied. The result of the balance between the N input and output flux showed that N addition significantly increased the δ15N in each organ of Larix gmelinii, but did not change the δ15N of soil. We also found that the N absorption by needles of Larix gmelinii could increase the needle photosynthesis rate and δ13C by increasing carboxylation, but N addition had no significant effect on the δ13C of soil and other organs. In addition, both the soil δ15N and δ13C increased with the soil depth. Conclusions Long-term N addition may lead to more open C and N cycles and further affect plant nutrient acquisition strategies in boreal forest ecosystems. |
| first_indexed | 2024-04-13T18:52:28Z |
| format | Article |
| id | doaj.art-278cc4ac523042f083df30e386a4b19b |
| institution | Directory Open Access Journal |
| issn | 2192-1709 |
| language | English |
| last_indexed | 2024-04-13T18:52:28Z |
| publishDate | 2022-05-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Ecological Processes |
| spelling | doaj.art-278cc4ac523042f083df30e386a4b19b2022-12-22T02:34:22ZengSpringerOpenEcological Processes2192-17092022-05-0111111210.1186/s13717-022-00382-0Effects of long-term nitrogen addition on the δ15N and δ13C of Larix gmelinii and soil in a boreal forestGuancheng Liu0Zhiwei Yin1Guoyong Yan2Shuang Liu3Xiaochun Wang4Yajuan Xing5Qinggui Wang6School of Life Sciences, Qufu Normal UniversityDepartment of Agricultural Resource and Environment, Heilongjiang UniversitySchool of Life Sciences, Qufu Normal UniversityDepartment of Agricultural Resource and Environment, Heilongjiang UniversityKey Laboratory of Sustainable Forest Ecosystem Management-Ministry of Education, School of Forestry, Northeast Forestry UniversitySchool of Life Sciences, Qufu Normal UniversitySchool of Life Sciences, Qufu Normal UniversityAbstract Background Natural abundance of carbon (C) and nitrogen (N) stable isotope ratios (δ13C and δ15N) has been used to indicate the state and cycle of ecosystem C and N. However, it is still unclear how C and N cycle of boreal forests respond to the N deposition. Results We conducted an 8-year continuous N addition field experiment in a Larix gmelinii forest in Greater Khingan Mountains, Northeast China. Four N treatments (0, 25, 50, 75 kg N ha−1 year−1) were built. The effects of N addition on the δ13C and δ15N of needle, branch, bark, and fine root of Larix gmelinii and soil were studied. The result of the balance between the N input and output flux showed that N addition significantly increased the δ15N in each organ of Larix gmelinii, but did not change the δ15N of soil. We also found that the N absorption by needles of Larix gmelinii could increase the needle photosynthesis rate and δ13C by increasing carboxylation, but N addition had no significant effect on the δ13C of soil and other organs. In addition, both the soil δ15N and δ13C increased with the soil depth. Conclusions Long-term N addition may lead to more open C and N cycles and further affect plant nutrient acquisition strategies in boreal forest ecosystems.https://doi.org/10.1186/s13717-022-00382-0Nitrogen depositionStable isotope technologyNatural abundance of carbonNatural abundance of nitrogenBoreal forest |
| spellingShingle | Guancheng Liu Zhiwei Yin Guoyong Yan Shuang Liu Xiaochun Wang Yajuan Xing Qinggui Wang Effects of long-term nitrogen addition on the δ15N and δ13C of Larix gmelinii and soil in a boreal forest Ecological Processes Nitrogen deposition Stable isotope technology Natural abundance of carbon Natural abundance of nitrogen Boreal forest |
| title | Effects of long-term nitrogen addition on the δ15N and δ13C of Larix gmelinii and soil in a boreal forest |
| title_full | Effects of long-term nitrogen addition on the δ15N and δ13C of Larix gmelinii and soil in a boreal forest |
| title_fullStr | Effects of long-term nitrogen addition on the δ15N and δ13C of Larix gmelinii and soil in a boreal forest |
| title_full_unstemmed | Effects of long-term nitrogen addition on the δ15N and δ13C of Larix gmelinii and soil in a boreal forest |
| title_short | Effects of long-term nitrogen addition on the δ15N and δ13C of Larix gmelinii and soil in a boreal forest |
| title_sort | effects of long term nitrogen addition on the δ15n and δ13c of larix gmelinii and soil in a boreal forest |
| topic | Nitrogen deposition Stable isotope technology Natural abundance of carbon Natural abundance of nitrogen Boreal forest |
| url | https://doi.org/10.1186/s13717-022-00382-0 |
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