Uncovering scale- and location-dependent variations and drivers of soil nutrients along a southeast-northwest transect of the Qinghai-Tibetan plateau using wavelet analysis
文献类型：期刊论文
| 作者 | Wang, Ziwei1,2; Pei, Yanwu3; Huang, Laiming1,4,5; Shao, Ming'an1,2,5; Zhang, Pingping4 |
| 刊名 | SOIL & TILLAGE RESEARCH
 |
| 出版日期 | 2025-11-01 |
| 卷号 | 253页码:106683 |
| 关键词 | Soil organic carbon Total nitrogen Total phosphorus Spatial variability Wavelet coherence Qinghai-Tibetan Plateau |
| ISSN号 | 0167-1987 |
| DOI | 10.1016/j.still.2025.106683 |
| 产权排序 | 1 |
| 文献子类 | Article |
| 英文摘要 | The spatial variability of soil organic carbon (SOC), total nitrogen (TN), and total phosphorus (TP), along with relationships with individual environmental factors, have been widely studied. However, the combined effects of multiple controlling factors remain underexplored across different scales and locations, particularly in complex environments like China's Qinghai-Tibetan Plateau (QTP). This study aimed to identify the scale-specific factors controlling SOC, TN, and TP along a 1,800-km southeast-northwest transect of the QTP using wavelet coherence analysis. Results showed that SOC exhibited significant spatial variability at small (<100 km) and medium (100-200 km) scales, TN at small and medium scales, and TP at medium and large (>200 km) scales, particularly over the 500-1000 km segment of the transect (at a 95 % confidence level). The relationships between influencing factors and SOC, TN, and TP varied with spatial scale and transect location. Across all scales, bulk density (BD) emerged as the dominant factor explaining SOC and TN variability, with the largest average wavelet coherence (AWC) (0.55 for SOC and 0.53 for TN) and the percent area of significant coherence (PASC) (35.46 % for SOC and 36.16 % for TN). For TP variability, pH was the primary controlling factor (AWC=0.50, PASC=24.81 %). The best combinations of factors were pH and BD for SOC (AWC=0.85, PASC=62.13 %); pH, BD, and mean annual precipitation for TN (AWC=0.92, PASC=58.63 %); and pH, BD, and silt for TP (AWC=0.90, PASC=43.81 %). Adding additional factors did not consistently enhance explanatory power; a two-factor combination was sufficient for SOC, while a three-factor combination adequately explained TN and TP variability. Our findings clarify the spatial variations of SOC, TN, and TP, highlighting their scale- and location-specific dependencies on influencing factors along the southeast-northwest transect of the QTP. The insights gained from this study can support future modeling, mapping, management, and sampling strategies for SOC, TN, and TP in the alpine region. |
| URL标识 | 查看原文 |
| WOS关键词 | SPATIAL VARIABILITY ; ORGANIC-CARBON ; TOTAL NITROGEN ; SEMIARID GRASSLANDS ; PHYSICAL-PROPERTIES ; LAND-USE ; TEXTURE ; BULK ; STOICHIOMETRY ; PHOSPHORUS |
| WOS研究方向 | Agriculture |
| 语种 | 英语 |
| WOS记录号 | WOS:001504329700002 |
| 出版者 | ELSEVIER |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/214571]  |
| 专题 | 黄河三角洲现代农业工程实验室_外文论文 |
| 通讯作者 | Huang, Laiming |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Modern Agr Engn Lab, Beijing 100101, Peoples R China; 2.Northwest A&F Univ, Coll Nat Resources & Environm, Yangling 712100, Shaanxi, Peoples R China; 3.Yulin Univ, Sch Life Sci, Yulin 719000, Shaanxi, Peoples R China; 4.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess Sci, Xian 710061, Peoples R China; 5.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Ziwei,Pei, Yanwu,Huang, Laiming,et al. Uncovering scale- and location-dependent variations and drivers of soil nutrients along a southeast-northwest transect of the Qinghai-Tibetan plateau using wavelet analysis[J]. SOIL & TILLAGE RESEARCH,2025,253:106683. |
| APA | Wang, Ziwei,Pei, Yanwu,Huang, Laiming,Shao, Ming'an,&Zhang, Pingping.(2025).Uncovering scale- and location-dependent variations and drivers of soil nutrients along a southeast-northwest transect of the Qinghai-Tibetan plateau using wavelet analysis.SOIL & TILLAGE RESEARCH,253,106683. |
| MLA | Wang, Ziwei,et al."Uncovering scale- and location-dependent variations and drivers of soil nutrients along a southeast-northwest transect of the Qinghai-Tibetan plateau using wavelet analysis".SOIL & TILLAGE RESEARCH 253(2025):106683. |
入库方式： OAI收割
来源：地理科学与资源研究所
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