Soil Phosphorus Fraction Characteristics in Different Alpine Grassland Types of the Qinghai-Tibet Plateau
文献类型：期刊论文
| 作者 | Li, Xueting1; Liu, Zhan1; Li, Cuilan4; Zong, Ning3; He, Nianpeng2; Cao, Zhiyuan1,4; Zhang, Jinjing4 |
| 刊名 | AGRONOMY-BASEL
 |
| 出版日期 | 2025-11-22 |
| 卷号 | 15期号:12页码:2689 |
| 关键词 | phosphorus fractions chemical fractionation solution P-31 NMR alpine grassland Qinghai-Tibetan Plateau |
| DOI | 10.3390/agronomy15122689 |
| 产权排序 | 3 |
| 文献子类 | Article |
| 英文摘要 | The alpine grassland ecosystem of the Tibetan Plateau is a vital base for animal husbandry and a key ecological security barrier in China. Phosphorus (P), an essential nutrient, is among the primary factors limiting grassland productivity. However, the spatial distribution of soil P fractions across alpine grasslands on the Tibetan Plateau and their environmental drivers remain unclear, limiting our understanding of P cycling and grassland productivity. This study examined the composition and distribution of soil P in three representative alpine grasslands (meadow, steppe, and desert) using a combination of chemical fractionation and P-31 nuclear magnetic resonance (NMR) spectroscopy. The results revealed pronounced spatial heterogeneity, with total soil P content varying by approximately 2.4-fold among the grassland types. Alpine meadows had the highest total P (0.73 g kg(-1)) and available P (4.02 mg kg(-1)) concentrations, with the latter being nearly twice that of alpine steppes and deserts. Alpine meadows were characterized by a predominance of labile and moderately labile organic P (e.g., NaOH-Po) and a diverse array of phosphate monoesters and diesters, whereas alpine deserts were dominated by stable, calcium-bound inorganic P (HCl-Pi). Temperature, precipitation, pH, and phosphatase activity were identified as key factors regulating the distribution and transformation of P fractions. The distinct P fractions and availability uncovered in this study are essential for predicting grassland ecosystem responses to environmental change and guiding sustainable pasture management on the Tibetan Plateau. |
| URL标识 | 查看原文 |
| WOS关键词 | NUCLEAR-MAGNETIC-RESONANCE ; ORGANIC PHOSPHORUS ; MT. GONGGA ; NITROGEN ; SPECIATION ; CHRONOSEQUENCE ; AVAILABILITY ; FORESTS ; CARBON |
| WOS研究方向 | Agriculture ; Plant Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:001648117700001 |
| 出版者 | MDPI |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/219397]  |
| 专题 | 拉萨站高原生态系统研究中心_外文论文 |
| 通讯作者 | Cao, Zhiyuan; Zhang, Jinjing |
| 作者单位 | 1.Yanbian Univ, Coll Agron, Yanji 133002, Peoples R China; 2.Northeast Forestry Univ, Inst Carbon Neutral, Sch Ecol, Harbin 150040, Peoples R China 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China; 4.Jilin Agr Univ, Coll Resource & Environm Sci, Key Lab Soil Resource Sustainable Utilizat Jilin P, Changchun 130118, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Li, Xueting,Liu, Zhan,Li, Cuilan,et al. Soil Phosphorus Fraction Characteristics in Different Alpine Grassland Types of the Qinghai-Tibet Plateau[J]. AGRONOMY-BASEL,2025,15(12):2689. |
| APA | Li, Xueting.,Liu, Zhan.,Li, Cuilan.,Zong, Ning.,He, Nianpeng.,...&Zhang, Jinjing.(2025).Soil Phosphorus Fraction Characteristics in Different Alpine Grassland Types of the Qinghai-Tibet Plateau.AGRONOMY-BASEL,15(12),2689. |
| MLA | Li, Xueting,et al."Soil Phosphorus Fraction Characteristics in Different Alpine Grassland Types of the Qinghai-Tibet Plateau".AGRONOMY-BASEL 15.12(2025):2689. |
入库方式： OAI收割
来源：地理科学与资源研究所
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