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植物生态化学计量特征及其主要假说
田地1(), 严正兵2, 方精云3,**()
Review on characteristics and main hypotheses of plant ecological stoichiometry
TIAN Di1(), YAN Zheng-Bing2, FANG Jing-Yun3,**()

图12. 生物地球化学生态位假说示意图, 改自Peñuelas等(2019)。A, 共生植物在多种元素化学计量特征的双主成分上所呈现的生物地球化学生态位。B, 干旱实验处理下共生植物的生物地球化学生态位的偏移。图中不同颜色组成的单个椭圆形表示某个特定的生物地球化学生态位。

Fig. 12. Diagram of Biogeochemical Niche Hypothesis, modified from Peñuelas et al. (2019). A shows biogeochemical niche segregation of multi-nutrients among coexisting plant species based on the principal component analysis. B shows the shift in biogeochemical niche among coexisting plant species in a drought experiment. Ellipses in different colours show specific biogeochemical niches.