Increase of soil nitrogen availability and recycling with stand age of Chinese-fir plantations
文献类型：期刊论文
| 作者 | Xia, Qi2,3; Chen, Liang2,3; Xiang, Wenhua2,3; Ouyang, Shuai2,3; Wu, Huili2,3; Lei, Pifeng2,3; Xiao, Wenfa4; Li, Shenggong5 ; Zeng, Lixiong4; Kuzyakov, Yakov1,2,6
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| 刊名 | FOREST ECOLOGY AND MANAGEMENT
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| 出版日期 | 2021-01-15 |
| 卷号 | 480页码:9 |
| 关键词 | Cunninghamia lanceolata Gross N mineralization Nitrification Soil N cycling |
| ISSN号 | 0378-1127 |
| DOI | 10.1016/j.foreco.2020.118643 |
| 通讯作者 | Chen, Liang(lc52416@163.com) ; Xiang, Wenhua(xiangwh2005@163.com) |
| 英文摘要 | Soil nitrogen (N) is frequently limiting forest productivity, especially in plantations. To investigate the soil N dynamics and the consequences of N accumulation as well as the losses in the ecosystem, we studied a chronosequence of Chinese-fir (Cunninghamia lanceolata [Lamb.] Hook) plantations with stands aged 3, 16, 25, 32, and >80 years. Total N (TN), dissolved organic N (DON), microbial biomass N (MBN) and mineral N (i.e., ammonium (NH4+) and nitrate (NO3-)) in the top 0-5 cm and 5-15 cm soils were compared with the annual N accumulation by trees, annual litter N return and microbial N transformation rates. Stronger changes with stand age were observed in all N forms in the top 5 cm compared to the 5-15 cm layer. Topsoil TN and DON increased steadily in stands from ages 3- to >80-years-old by 1.9-times and 2.1-times, respectively. MBN increased from 206 mg kg(-1) to 327 mg kg(-1) in the first 25 years and stabilized thereafter. NH4+ content increased sharply from 3 to 16 years and then stabilized, while NO3- increased linearly with stand age. Both N demand of Chinese-fir and litter N input were clearly age dependent and defined the soil N status: rapid tree biomass accumulation in younger stands greatly depleted soil N, while the older stands with larger litter return and slower growth enabled N re-accumulation in the topsoil. The close positive correlation between total mineral N and gross mineralization rate, as well as between NO3- and gross nitrification rate indicated that the mineralization of soil organic matter and the nitrification of released NH4+ were the two primary microbial processes controlling the available N supply. The topsoil NO3-: NH4+ ratio in older stands (32and >80 years) was greater than 1.0, and the MBN: (NH4+ + NO3-) ratio was greatly reduced. This indicates that N availability increase and N cycling is accelerated with stands age. |
| 资助项目 | National Key Research and Development Program of China[2016YFD0600202] ; National Natural Science Foundation of China[31971457] ; Huitong Forest Ecological Station - State Forestry and Grassland Administration of China[2020132080] ; Ministry of Education ; RUDN University program 5-100 |
| WOS研究方向 | Forestry |
| 语种 | 英语 |
| WOS记录号 | WOS:000598056400009 |
| 出版者 | ELSEVIER |
| 资助机构 | National Key Research and Development Program of China ; National Natural Science Foundation of China ; Huitong Forest Ecological Station - State Forestry and Grassland Administration of China ; Ministry of Education ; RUDN University program 5-100 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/137350]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Chen, Liang; Xiang, Wenhua |
| 作者单位 | 1.Univ Goettingen, Dept Agr Soil Sci, Dept Soil Sci Temperate Ecosyst, D-37077 Gottingen, Germany 2.Cent South Univ Forestry & Technol, Fac Life Sci & Technol, Changsha 410004, Hunan, Peoples R China 3.Huitong Natl Stn Sci Observat & Res Chinese Fir P, Huitong 438107, Hunan, Peoples R China 4.Chinese Acad Forestry, State Forestry Adm, Key Lab Forest Ecol & Environm, Res Inst Forest Ecol Environm & Protect, Beijing 100091, Peoples R China 5.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 6.RUDN Univ, Agrotechnol Inst, Moscow 117198, Russia |
| 推荐引用方式 GB/T 7714 | Xia, Qi,Chen, Liang,Xiang, Wenhua,et al. Increase of soil nitrogen availability and recycling with stand age of Chinese-fir plantations[J]. FOREST ECOLOGY AND MANAGEMENT,2021,480:9. |
| APA | Xia, Qi.,Chen, Liang.,Xiang, Wenhua.,Ouyang, Shuai.,Wu, Huili.,...&Kuzyakov, Yakov.(2021).Increase of soil nitrogen availability and recycling with stand age of Chinese-fir plantations.FOREST ECOLOGY AND MANAGEMENT,480,9. |
| MLA | Xia, Qi,et al."Increase of soil nitrogen availability and recycling with stand age of Chinese-fir plantations".FOREST ECOLOGY AND MANAGEMENT 480(2021):9. |
入库方式： OAI收割
来源：地理科学与资源研究所
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