Distributions and controlling factors of soil total nitrogen and nitrogen fractions along an altitude gradient in Qinghai-Tibet Plateau
文献类型：期刊论文
| 作者 | Meng, Da3; Wang, Xinyu3; Tang, Jiayi3; Zong, Ning2; Zhang, Jinjing3; He, Nianpeng1,2,4 |
| 刊名 | JOURNAL OF SOILS AND SEDIMENTS
 |
| 出版日期 | 2024-08-06 |
| 卷号 | N/A |
| 关键词 | Total nitrogen Nitrogen fractions Nitrogen hydrolyzing enzyme Altitude gradient Influencing factors Qinghai-Tibet Plateau |
| DOI | 10.1007/s11368-024-03882-y |
| 产权排序 | 2 |
| 文献子类 | Article ; Early Access |
| 英文摘要 | PurposeUnderstanding spatial variations in soil nutrients and its drivers is essential for sustainable nutrient management and related environmental assessment in terrestrial ecosystems. Here, we investigated the distribution characteristics and controlling factors of soil total nitrogen (N) and N fractions along an altitude gradient in an alpine meadow of the Qinghai-Tibet Plateau.Materials and methodsSix experimental sites at altitudes 4400, 4500, 4650, 4800, 4950, and 5200 m were established on southern slope of Nyainqentanglha Mountain since 2005. Total N and N fractions were quantified and their relationships with climate, vegetation, and edaphic factors were analyzed by Pearson correlation, redundancy analysis, and structural equation modeling.Results and discussionWith increasing altitude, the contents of total N, alkali-hydrolyzable N, inorganic N fractions (ammonium N and nitrate N), and organic N fractions (acid-hydrolyzable and acid-insoluble organic N) gradually increased, reached their maximums at altitude 4800 or 4950 m, and then decreased. Soil organic carbon explained 90.5% of the variations in TN and N fractions, and soil moisture, pH, mineralogy, texture, and N hydrolyzing enzyme activity explained 8.80% of the variations in TN and N fractions. Mean annual temperature and precipitation exhibited direct and positive impact on soil organic carbon, which had positive effect on inorganic N fractions and plant aboveground biomass in sequence.ConclusionsSoil organic carbon is the most dominant factors driving the variations in TN and N fractions along the altitude gradient. Climate change can impact alpine grassland productivity by regulating soil inorganic N distribution. |
| WOS关键词 | ALPINE GRASSLANDS ; ORGANIC NITROGEN ; CARBON ; MATTER ; STABILIZATION ; BIOMASS ; CLIMATE |
| WOS研究方向 | Environmental Sciences & Ecology ; Agriculture |
| WOS记录号 | WOS:001285686600001 |
| 出版者 | SPRINGER HEIDELBERG |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/206907]  |
| 专题 | 生态系统网络观测与模拟院重点实验室_外文论文 |
| 作者单位 | 1.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 3.Jilin Agr Univ, Coll Resource & Environm Sci, Changchun 130118, Peoples R China 4.Northeast Forestry Univ, Ctr Ecol Res, Harbin 150040, Peoples R China |
| 推荐引用方式 GB/T 7714 | Meng, Da,Wang, Xinyu,Tang, Jiayi,et al. Distributions and controlling factors of soil total nitrogen and nitrogen fractions along an altitude gradient in Qinghai-Tibet Plateau[J]. JOURNAL OF SOILS AND SEDIMENTS,2024,N/A. |
| APA | Meng, Da,Wang, Xinyu,Tang, Jiayi,Zong, Ning,Zhang, Jinjing,&He, Nianpeng.(2024).Distributions and controlling factors of soil total nitrogen and nitrogen fractions along an altitude gradient in Qinghai-Tibet Plateau.JOURNAL OF SOILS AND SEDIMENTS,N/A. |
| MLA | Meng, Da,et al."Distributions and controlling factors of soil total nitrogen and nitrogen fractions along an altitude gradient in Qinghai-Tibet Plateau".JOURNAL OF SOILS AND SEDIMENTS N/A(2024). |
入库方式： OAI收割
来源：地理科学与资源研究所
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