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Patterns and driving factors of soil nutrient stoichiometry under three land use types in the alpine region of Tibet, China

文献类型：期刊论文

作者Wang, Ziwei1,3; Wang, Jiao1,2; Huang, Laiming1,2; Shao, Ming'an1,2,3
刊名JOURNAL OF SOILS AND SEDIMENTS
出版日期2023-11-28
页码13
ISSN号1439-0108
关键词Alpine soil Ecological stoichiometry Land use type Influencing factors
DOI10.1007/s11368-023-03692-8
通讯作者Huang, Laiming(huanglm@igsnrr.ac.cn)
英文摘要Purpose Understanding the variations and driving variables of soil ecological stoichiometry in high-altitude alpine ecosystems is crucial for the effective management and regulation of vulnerable environments. In high-altitude alpine ecosystems with limited data availability, the connection between soil nutrient content, particularly soil nutrient stoichiometry and land use types, remains unclear. This study aimed to investigate the characteristics and control of soil nutrient stoichiometric ratios under different land use patterns. Methods A transect covering farmland (FA), forestland (FO), and grassland (GR) was established in the southeast of Tibet Autonomous Region, and totally, 59 sampling points at an interval of 25-30 km were selected for field survey and sampling. The patterns and drivers of soil nutrient stoichiometry under various land use types were studied by measuring soil properties at different depths (0-10 cm, 10-20 cm, and 20-30 cm). Results Soil organic carbon (SOC), total nitrogen (TN), C:N, C:P, and N:P ratios in FO and GR were higher than those in FA, while total phosphorus (TP) exhibited the opposite trend. Both SOC content and C:P ratio were significantly influenced by soil depth (p < 0.05), showing a declining tendency with the increasing soil depth. TN, TP, C:N, and N:P were not affected by soil depth (p > 0.05). Redundancy analysis indicated that mean annual rainfall, total porosity, and slope were the key factors affecting soil nutrient stoichiometry in FA and FO, while nutrient stoichiometry in GR was mainly affected by bulk density, altitude, and slope. In the random forest model, soil properties, climate, and topography could jointly explain 60.81.84.78% of the total differences in SOC, TN, and TP concentrations and stoichiometric ratios. Conclusion Our findings showed that SOC, TN, and TP concentrations and their ratios were significantly influenced by land use patterns and that the driving factors of SOC, TN, TP concentrations and their stoichiometric ratios were different. This work provides a basis for understanding ecosystem processes and designing sustainable soil and environmental management decisions in alpine regions.
WOS关键词N-P STOICHIOMETRY ; CNP STOICHIOMETRY ; ORGANIC-CARBON ; ECOLOGICAL STOICHIOMETRY ; COMMUNITY COMPOSITION ; PHOSPHORUS STATUS ; LOESS PLATEAU ; NITROGEN ; ECOSYSTEMS ; DEGRADATION
资助项目Second Tibetan Plateau Scientific Expedition and Research (STEP) Program[2019QZKK0306] ; Third Comprehensive Scientific Expedition Project in Xinjiang[2022XJKK0904] ; Youth Innovation Promotion Association of Chinese Academy of Sciences[2019052] ; Bingwei Outstanding Young Talent Project from the Institute of Geographical Sciences and Natural Resources Research[2017RC203] ; State Key Laboratory of Urban and Regional Ecology[SKLURE2023-2-2] ; State Key Laboratory of Earth Surface Processes and Resource Ecology[2022-KF-04] ; State Key Laboratory of Environmental Geochemistry[SKLEG2023211]
WOS研究方向Environmental Sciences & Ecology ; Agriculture
语种英语
出版者SPRINGER HEIDELBERG
WOS记录号WOS:001123650100001
资助机构Second Tibetan Plateau Scientific Expedition and Research (STEP) Program ; Third Comprehensive Scientific Expedition Project in Xinjiang ; Youth Innovation Promotion Association of Chinese Academy of Sciences ; Bingwei Outstanding Young Talent Project from the Institute of Geographical Sciences and Natural Resources Research ; State Key Laboratory of Urban and Regional Ecology ; State Key Laboratory of Earth Surface Processes and Resource Ecology ; State Key Laboratory of Environmental Geochemistry
源URL[http://ir.igsnrr.ac.cn/handle/311030/201343]  
专题中国科学院地理科学与资源研究所
通讯作者Huang, Laiming
作者单位1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Yellow River Delta Modern Agr Engn Lab, Beijing 100101, Peoples R China
2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China
3.Northwest A&F Univ, Coll Nat Resources & Environm, Yangling 712100, Shaanxi, Peoples R China
推荐引用方式
GB/T 7714		 Wang, Ziwei,Wang, Jiao,Huang, Laiming,et al. Patterns and driving factors of soil nutrient stoichiometry under three land use types in the alpine region of Tibet, China[J]. JOURNAL OF SOILS AND SEDIMENTS,2023:13.
APA Wang, Ziwei,Wang, Jiao,Huang, Laiming,&Shao, Ming'an.(2023).Patterns and driving factors of soil nutrient stoichiometry under three land use types in the alpine region of Tibet, China.JOURNAL OF SOILS AND SEDIMENTS,13.
MLA Wang, Ziwei,et al."Patterns and driving factors of soil nutrient stoichiometry under three land use types in the alpine region of Tibet, China".JOURNAL OF SOILS AND SEDIMENTS (2023):13.

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来源：地理科学与资源研究所

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