[An ecological stoichiometry model based on the size of Nitraria tangutorum]. / åºäºç½åºä¸ªä½å¤§å°ççæåå¦è®¡é模å.
Ying Yong Sheng Tai Xue Bao
; 31(2): 366-372, 2020 Feb.
Article
en Zh
| MEDLINE
| ID: mdl-32476327
ABSTRACT
Ecological stoichiometry provides a new method for understanding the characteristics, driving forces and mechanisms of C, N and P coupled cycles. However, there are few reports on the variation in ecological stoichiometry of plants during their growth. In this study, we fitted the total elemental mass of different module based on the size of Nitraria tangutorum, and derived the ecological stoichiometry models of different module and whole ramet by measuring the biomass and nutrient concentrations of the current-year stems in 2017, 2-year-old stems, more than 2-year-old stems, leaves, roots and layerings of N. tangutorum ramet. Our results showed that the derivation model could well reflect the changes in ecological stoichiometry during plant growth. The old stems and the layering had higher NP and CP, while leaves,current-year stems, and roots had lower NP and CP. The whole plant nutrient elements cumulative rate was PNC during the growth process. These results were consistent with the growth rate hypothesis and allometric theory, and provide evidence for nutrient reabsorption. This model could be used as an effective way to analyze the dynamic characteristics of elements in plant growth.
Palabras clave
Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Magnoliopsida
Tipo de estudio:
Prognostic_studies
Idioma:
Zh
Revista:
Ying Yong Sheng Tai Xue Bao
Año:
2020
Tipo del documento:
Article
País de afiliación:
China