Compensatory light utilization of Phalaris arundinacea within the Phalaris arundinacea – Phragmites australis compound community

Journal of plant interactions

article

Yun Zhao¹  Weiguo Fu¹  Pingping Li²  Ke Xue¹  Yuxuan Wang¹  De Ke Xing¹ 

[1] Key laboratory of Modern Agricultural Equipment and Technology, Ministry of Education & Jiangsu Province, Jiangsu University;Cooperative Innovation Center of Southern Modern Forestry, Nanjing Forestry University

关键词: Density;    compensatory light utilization;    light response curve;    Phalaris arundinacea;    Phragmites australis;   

DOI  :  10.1080/17429145.2018.1474392

学科分类：纳米科学和纳米技术

来源: Taylor & Francis

【 摘 要 】

This study investigated the light utilization characteristics of Phalaris arundinacea within the Phalaris arundinacea-Phragmites australis compound community. The investigation was based on the response curve equation of the net photosynthetic rate-photosynthetic photon flux density (Pn-PPFD) of P. arundinacea and on the distribution of PPFD on the surface canopy of P. arundinacea within the compound community. Results showed that P. arundinacea was able to compensate for substantial reduction in available light, and utilize the weak light within the lower part of the compound community. On the one hand, the density of P. australis within the compound community determined the compensatory light utilization rate (CLUR) of P.arundinacea. On the other hand, the CLUR amplitude of P. arundinacea within the compound community with the same P. australis density was relatively small in a day. The results can help people to regulate P. arundinaceaP. australis compound communities to maintain a long-term, stable coexistence in the constructed wetlands.

【 授权许可】

CC BY|CC BY-NC