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呼伦贝尔草地植物茎秆和叶片中养分的时间动态与回收
张效境1,2, 梁潇洒1,2, 马望1, 王正文1,*()
Temporal variation and resorption of nutrients in plant culms and leaves in Hulun Buir grassland
ZHANG Xiao-Jing1,2, LIANG Xiao-Sa1,2, MA Wang1, WANG Zheng-Wen1,*()

图5. 植物生长盛期与枯叶期氮(N)、磷(P)含量与回收效率之间的关系。A, 生长盛期N含量与N回收效率。B, 生长盛期P含量与P回收效率。C, 枯叶期N含量与N回收效率。D, 枯叶期P含量与P回收效率。圆形代表植物叶片; 三角形代表植物茎秆。实线表示叶片养分回收效率与养分含量相关(p < 0.05); 虚线表示茎秆养分回收效率与养分含量相关(p < 0.05)。

Fig. 5. Correlations between nitrogen (N) and phosphorus (P) contents at the growth and senescence stages and nutrient resorption efficiency. A, N content and N resorption efficiency at the growth stage. B, P content and P resorption efficiency at the growth stage. C, N content and N resorption efficiency at the senescence stage. D, P content and P resorption efficiency at the senescence stage. Circle, leaves; triangle, culms. The solid line indicates that leaf resorption efficiency is related to nutrient content (p < 0.05); the dotted line indicates that culm resorption efficiency is related to nutrient content (p < 0.05).