Gross mineralization and nitrification in degraded alpine grassland soil
文献类型：期刊论文
| 作者 | Jin, Peng1,2; Liu, Min1; Xu, Xingliang1; Sun, Yue3,4; Kuzyakov, Yakov4,5,6; Gunina, Anna5,7,8 |
| 刊名 | RHIZOSPHERE
 |
| 出版日期 | 2023-09-01 |
| 卷号 | 27页码:6 |
| 关键词 | 15N-pool dilution Tibetan plateau Gross N mineralization Alpine meadow Degradation Rhizosphere processes |
| DOI | 10.1016/j.rhisph.2023.100778 |
| 通讯作者 | Xu, Xingliang(xuxingl@hotmail.com) |
| 英文摘要 | Global climate changes and anthropogenic activities degrade them ecosystems, which strongly changes net nitrogen (N) mineralization in alpine grasslands, and, thus, makes them even more limited by available N. Our objective was to examine the soil gross N mineralization and nitrification depending on degradation stages in them on the example of the Tibetan Plateau. We used the in situ 15N isotope dilution to quantify the gross N mineralization and nitrification of soil in three degradation stages: i) 0-5 and 5-10 cm depth of soil covered by Kobresia pygmaea community (non degraded), ii) 0-5 cm depth of soil occupied by lichens on the surface (moderately degraded), and iii) 0-5 cm in bared subsoil patches (completely degraded). The gross N mineralization rate decreased 6 times in the bared subsoil patches compared to the 5-10 cm in soil covered by Kobresia pygmaea. The gross nitrification rate of 0-5 cm depth of soil under Kobresia pygmaea community was 1.67 times higher than in the bare subsoil patches. The net N mineralization and nitrification rates were negative, pointing to strong N limitations, especially in bare subsoil patches. Among the three patch types, the bared subsoil had the slowest N transformation rates for all studied processes. As alpine grasslands degrade, net N mineralization and nitrification processes significantly decline, intensifying N limitations for plants. Furthermore, the appearance of bared subsoil patches further accelerates root mat destruction, adding complexity to ecosystem degradation and increasing N loss from the ecosystem. |
| WOS关键词 | NITROGEN MINERALIZATION ; INORGANIC NITROGEN ; TERRESTRIAL ECOSYSTEMS ; ORGANIC NITROGEN ; N MINERALIZATION ; POOL DILUTION ; PLANT ; DEGRADATION ; TEMPERATURE ; CARBON |
| 资助项目 | Second Tibetan Plateau Scientific Expedition and Research (STEP)[2019QZKK0302-02] ; National Natural Science Foundation of China[U20A2006] ; National Natural Science Foundation of China[31988102] ; RUDN University Strategic Academic Leadership Program ; Kazan Federal University ; West-Siberian Interregional Science and Education Center[89-DON, 1] ; CarboRus project[075-15-2021-610] |
| WOS研究方向 | Agriculture ; Plant Sciences |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:001076703200001 |
| 资助机构 | Second Tibetan Plateau Scientific Expedition and Research (STEP) ; National Natural Science Foundation of China ; RUDN University Strategic Academic Leadership Program ; Kazan Federal University ; West-Siberian Interregional Science and Education Center ; CarboRus project |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/198539]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Xu, Xingliang |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, 11A Datun Rd, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Coll Resources & Environm, Yanqi Lake, Beijing 101408, Peoples R China 3.Univ Bayreuth, Dept Agroecol, BayCEER, D-95447 Bayreuth, Germany 4.Univ Goettingen, Dept Soil Sci Temperate Ecosyst, Dept Agr Soil Sci, D-37077 Gottingen, Germany 5.RUDN Univ, Peoples Friendship Univ Russia, Moscow 117198, Russia 6.Kazan Fed Univ, Inst Environm Sci, Kazan 420049, Russia 7.Kassel Univ, Dept Environm Chem, D-37213 Kassel, Germany 8.Tyumen State Univ, Tyumen 625003, Russia |
| 推荐引用方式 GB/T 7714 | Jin, Peng,Liu, Min,Xu, Xingliang,et al. Gross mineralization and nitrification in degraded alpine grassland soil[J]. RHIZOSPHERE,2023,27:6. |
| APA | Jin, Peng,Liu, Min,Xu, Xingliang,Sun, Yue,Kuzyakov, Yakov,&Gunina, Anna.(2023).Gross mineralization and nitrification in degraded alpine grassland soil.RHIZOSPHERE,27,6. |
| MLA | Jin, Peng,et al."Gross mineralization and nitrification in degraded alpine grassland soil".RHIZOSPHERE 27(2023):6. |
入库方式： OAI收割
来源：地理科学与资源研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。