The retention dynamics of early-spring N input in a temperate forest ecosystem: Implications for winter N deposition
In N-limited temperate regions of China, rates of atmospheric N deposition remain high during winter due to industrial development and energy consumption. Winter-deposited N accumulates and is then released after snowmelt. However, little is known about the retention dynamics of early-spring N input...
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| Format: | Article |
| Language: | English |
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Elsevier
2022-01-01
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| Series: | Global Ecology and Conservation |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2351989421005163 |
| _version_ | 1798024632650956800 |
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| author | Linna Ma Chaoxue Zhang Yixia Lv Renzhong Wang |
| author_facet | Linna Ma Chaoxue Zhang Yixia Lv Renzhong Wang |
| author_sort | Linna Ma |
| collection | DOAJ |
| description | In N-limited temperate regions of China, rates of atmospheric N deposition remain high during winter due to industrial development and energy consumption. Winter-deposited N accumulates and is then released after snowmelt. However, little is known about the retention dynamics of early-spring N input in temperate forest ecosystems. We applied 15N isotopic tracer after snowmelt, and then quantified 15N dynamics in litter, soils, microbes and vascular plants over the following growing season in a warm temperate forest of northern China. In early spring (7 days after 15N addition), approximately 80% of applied 15N was retained in the ecosystem. The 15N recovery was the highest in litter, followed by soils and microbes, with only trivial acquisition in vascular plants. After early spring, there was little change in total 15N recovery over the following season, which indicated that the temperate forest ecosystem had high potential for the retention of early-spring N input. The 15N levels gradually declined in litter and microbes, while they were gradually increased in the vascular plants. In late fall, substantial 15N tracer retained in litter and was resorbed from senescing tissues to roots. Evergreen coniferous trees presented higher 15N acquisition than deciduous broad-leaved trees. Our results suggest that substantial early-spring N input can be retained in warm temperate forest ecosystems. The findings highlight the importance of litter and plants in sustaining early-spring exogenous N resources, inferring the need to considering winter N deposition for a better understanding of N cycling in temperate ecosystems. |
| first_indexed | 2024-04-11T18:05:44Z |
| format | Article |
| id | doaj.art-ce0185bc6dfe434792fe5ea9c56be071 |
| institution | Directory Open Access Journal |
| issn | 2351-9894 |
| language | English |
| last_indexed | 2024-04-11T18:05:44Z |
| publishDate | 2022-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Global Ecology and Conservation |
| spelling | doaj.art-ce0185bc6dfe434792fe5ea9c56be0712022-12-22T04:10:20ZengElsevierGlobal Ecology and Conservation2351-98942022-01-0133e01966The retention dynamics of early-spring N input in a temperate forest ecosystem: Implications for winter N depositionLinna Ma0Chaoxue Zhang1Yixia Lv2Renzhong Wang3State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, The Chinese Academy of Sciences, Beijing 100093, China; University of Chinese Academy of Sciences, Beijing, China; Corresponding authors at: State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, The Chinese Academy of Sciences, Beijing 100093, China.State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, The Chinese Academy of Sciences, Beijing 100093, China; University of Chinese Academy of Sciences, Beijing, ChinaState Key Laboratory of Vegetation and Environmental Change, Institute of Botany, The Chinese Academy of Sciences, Beijing 100093, China; University of Chinese Academy of Sciences, Beijing, ChinaState Key Laboratory of Vegetation and Environmental Change, Institute of Botany, The Chinese Academy of Sciences, Beijing 100093, China; University of Chinese Academy of Sciences, Beijing, China; Corresponding authors at: State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, The Chinese Academy of Sciences, Beijing 100093, China.In N-limited temperate regions of China, rates of atmospheric N deposition remain high during winter due to industrial development and energy consumption. Winter-deposited N accumulates and is then released after snowmelt. However, little is known about the retention dynamics of early-spring N input in temperate forest ecosystems. We applied 15N isotopic tracer after snowmelt, and then quantified 15N dynamics in litter, soils, microbes and vascular plants over the following growing season in a warm temperate forest of northern China. In early spring (7 days after 15N addition), approximately 80% of applied 15N was retained in the ecosystem. The 15N recovery was the highest in litter, followed by soils and microbes, with only trivial acquisition in vascular plants. After early spring, there was little change in total 15N recovery over the following season, which indicated that the temperate forest ecosystem had high potential for the retention of early-spring N input. The 15N levels gradually declined in litter and microbes, while they were gradually increased in the vascular plants. In late fall, substantial 15N tracer retained in litter and was resorbed from senescing tissues to roots. Evergreen coniferous trees presented higher 15N acquisition than deciduous broad-leaved trees. Our results suggest that substantial early-spring N input can be retained in warm temperate forest ecosystems. The findings highlight the importance of litter and plants in sustaining early-spring exogenous N resources, inferring the need to considering winter N deposition for a better understanding of N cycling in temperate ecosystems.http://www.sciencedirect.com/science/article/pii/S2351989421005163Forest15NN depositionN dynamicSnowmeltWinter |
| spellingShingle | Linna Ma Chaoxue Zhang Yixia Lv Renzhong Wang The retention dynamics of early-spring N input in a temperate forest ecosystem: Implications for winter N deposition Global Ecology and Conservation Forest 15N N deposition N dynamic Snowmelt Winter |
| title | The retention dynamics of early-spring N input in a temperate forest ecosystem: Implications for winter N deposition |
| title_full | The retention dynamics of early-spring N input in a temperate forest ecosystem: Implications for winter N deposition |
| title_fullStr | The retention dynamics of early-spring N input in a temperate forest ecosystem: Implications for winter N deposition |
| title_full_unstemmed | The retention dynamics of early-spring N input in a temperate forest ecosystem: Implications for winter N deposition |
| title_short | The retention dynamics of early-spring N input in a temperate forest ecosystem: Implications for winter N deposition |
| title_sort | retention dynamics of early spring n input in a temperate forest ecosystem implications for winter n deposition |
| topic | Forest 15N N deposition N dynamic Snowmelt Winter |
| url | http://www.sciencedirect.com/science/article/pii/S2351989421005163 |
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