黄河北岸兰州段丘陵区土壤生态化学计量与空间变异
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Spatial variation of ecological stoichiometry characteristics of hilly soil in Lanzhou section of Yellow River north shore
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图4. 研究区土壤碳、氮、磷含量及其化学计量比的关系 |
Fig.4. Relationship between SOC, STN and STP contents and their stoichiometric ratio in the study area |
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