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Shen F, Liu W, Duan H, Wu J, Wu C, Liao Y, Yuan Y, Fan H. High N Storage but Low N Recovery After Long-Term N-Fertilization in a Subtropical Cunninghamia lanceolata Plantation Ecosystem: A 14-Year Case Study. FRONTIERS IN PLANT SCIENCE 2022; 13:914176. [PMID: 35800613 PMCID: PMC9255632 DOI: 10.3389/fpls.2022.914176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Accepted: 05/06/2022] [Indexed: 06/15/2023]
Abstract
Forests are among the most important N pools of all terrestrial ecosystems. Elevated atmospheric N deposition in recent decades has led to increased interest in the influences of N application on forest N cycles. However, accurate assessments of N storage in forest ecosystems remain elusive. We used a 14-year experiment of a Chinese fir [Cunninghamia lanceolata (Lamb.) Hook] plantation to explore how long-term N fertilization affected N storage and recovery rates. Our study plots were located in a field that had been continuously fertilized over 14 years (2004-2017) with urea at rates of 0 (N0, control), 60 (N60, low-N), 120 (N120, medium-N), and 240 (N240, high-N) kg N hm-2a-1. Data were collected that included N content and biomass in the understory, litter, and various plant organs (i.e., leaves, branches, stems, roots, and bark), as well as soil N content and density at different depths. Results showed that the total ecosystem N storage in the N-fertilized plots was 1.1-1.4 times higher than that in the control plots. About 12.36% of the total ecosystem N was stored in vegetation (plant organs, litter, and understory) and 87.64% was stored in soil (0-60 cm). Plant organs, litter, and soil had higher N storage than the understory layer. Significantly higher plant N uptake was found in the medium-N (1.2 times) and high-N (1.4 times) treatments relative to the control. The N recovery rate of the understory layer in the N-fertilized treatments was negative and less than that in the control. Application of long-term N fertilizer to this stand led to a low N recovery rate (average 11.39%) and high loss of N (average 91.86%), which indicate low N use efficiency in the Chinese fir plantation ecosystem. Our findings further clarify the distribution of N in an important terrestrial ecosystem and improve our understanding of regional N cycles.
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Affiliation(s)
- Fangfang Shen
- Jiangxi Provincial Key Laboratory for Restoration of Degraded Ecosystems and Watershed Ecohydrology, Nanchang Institute of Technology, Nanchang, China
- Jiangxi Provincial Key Laboratory of Soil Erosion and Prevention, Jiangxi Academy of Water Science and Engineering, Nanchang, China
| | - Wenfei Liu
- Jiangxi Provincial Key Laboratory for Restoration of Degraded Ecosystems and Watershed Ecohydrology, Nanchang Institute of Technology, Nanchang, China
| | - Honglang Duan
- Institute for Forest Resources and Environment of Guizhou, Key Laboratory of Forest Cultivation in Plateau Mountain of Guizhou Province, College of Forestry, Guizhou University, Guiyang, China
| | - Jianping Wu
- Yunnan Key Laboratory of Plant Reproductive Adaptation and Evolutionary Ecology, Yunnan University, Kunming, China
- Key Laboratory of Soil Ecology and Health in Universities of Yunnan Province, School of Ecology and Environmental Sciences, Yunnan University, Kunming, China
| | - Chunsheng Wu
- Jiangxi Provincial Key Laboratory for Restoration of Degraded Ecosystems and Watershed Ecohydrology, Nanchang Institute of Technology, Nanchang, China
| | - Yingchun Liao
- Jiangxi Provincial Key Laboratory for Restoration of Degraded Ecosystems and Watershed Ecohydrology, Nanchang Institute of Technology, Nanchang, China
| | - Yinghong Yuan
- Jiangxi Provincial Key Laboratory for Restoration of Degraded Ecosystems and Watershed Ecohydrology, Nanchang Institute of Technology, Nanchang, China
| | - Houbao Fan
- Jiangxi Provincial Key Laboratory for Restoration of Degraded Ecosystems and Watershed Ecohydrology, Nanchang Institute of Technology, Nanchang, China
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Liu W, Duan H, Shen F, Liao Y, Li Q, Wu J. Effects of long‐term nitrogen addition on water use by
Cunninghamia lanceolate
in a subtropical plantation. Ecosphere 2022. [DOI: 10.1002/ecs2.4033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Affiliation(s)
- Wenfei Liu
- Jiangxi Key Laboratory for Restoration of Degraded Ecosystems and Watershed Ecohydrology Nanchang Institute of Technology Nanchang China
| | - Honglang Duan
- College of Forestry Guizhou University Guiyang China
| | - Fangfang Shen
- Jiangxi Key Laboratory for Restoration of Degraded Ecosystems and Watershed Ecohydrology Nanchang Institute of Technology Nanchang China
| | - Yingchun Liao
- Jiangxi Key Laboratory for Restoration of Degraded Ecosystems and Watershed Ecohydrology Nanchang Institute of Technology Nanchang China
| | - Qiang Li
- Department of Civil Engineering University of Victoria Victoria British Columbia Canada
| | - Jianping Wu
- Yunnan Key Laboratory of Plant Reproductive Adaptation and Evolutionary Ecology Yunnan University Kunming China
- Key Laboratory of Soil Ecology and Health in Universities of Yunnan Province, School of Ecology and Environmental Sciences Yunnan University Kunming China
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Xu X, Yan L, Xia J. A threefold difference in plant growth response to nitrogen addition between the laboratory and field experiments. Ecosphere 2019. [DOI: 10.1002/ecs2.2572] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Affiliation(s)
- Xiaoni Xu
- Tiantong National Field Observation Station for Forest Ecosystem Center for Global Change and Ecological Forecasting School of Ecological and Environmental Sciences East China Normal University Shanghai 200062 China
- Institute of Eco‐Chongming Shanghai 200062 China
| | - Liming Yan
- Tiantong National Field Observation Station for Forest Ecosystem Center for Global Change and Ecological Forecasting School of Ecological and Environmental Sciences East China Normal University Shanghai 200062 China
- Institute of Eco‐Chongming Shanghai 200062 China
| | - Jianyang Xia
- Tiantong National Field Observation Station for Forest Ecosystem Center for Global Change and Ecological Forecasting School of Ecological and Environmental Sciences East China Normal University Shanghai 200062 China
- Institute of Eco‐Chongming Shanghai 200062 China
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