文献类型：期刊文献

英文题名：Intraspecific N and P stoichiometry of Phragmites australis: geographic patterns and variation among climatic regions

作者：Hu, Yu-Kun[1,2,3] Zhang, Ya-Lin[1,2] Liu, Guo-Fang[2] Pan, Xu[1,2,3] Yang, Xuejun[2] Li, Wen-Bing[1] Dai, Wen-Hong[1] Tang, Shuang-Li[1,2] Xiao, Tao[1] Chen, Ling-Yun[1] Xiong, Wei[1] Song, Yao-Bin[1] Dong, Ming[1,2]

第一作者：胡宇坤;Hu, Yu-Kun

通信作者：Li, WB[1];Dong, M[1];Dong, M[2]

机构：[1]Hangzhou Normal Univ, Coll Life & Environm Sci, Key Lab Hangzhou City Ecosyst Protect & Restorat, Hangzhou, Zhejiang, Peoples R China;[2]Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China;[3]Chinese Acad Forestry, Inst Wetland Res, Beijing, Peoples R China

年份：2017

卷号：7

起止页码：1-8

外文期刊名：SCIENTIFIC REPORTS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000394744400001)】；

基金：We thank Can Jiang and Hong-Ke Xu for their help in the sample analysis, Wei-Qin Zhu and Dan Jiang for their assistance in the laboratory. This work was supported by the NSFC (Grants: 31261120580; 31400346; 41401556) and the Innovative R&D grant (201203) from Hangzhou Normal University.

语种：英文

摘要：Geographic patterns in leaf stoichiometry reflect plant adaptations to environments. Leaf stoichiometry variations along environmental gradients have been extensively studied among terrestrial plants, but little has been known about intraspecific leaf stoichiometry, especially for wetland plants. Here we analyzed the dataset of leaf N and P of a cosmopolitan wetland species, Phragmites australis, and environmental (geographic, climate and soil) variables from literature and field investigation in natural wetlands distributed in three climatic regions (subtropical, temperate and highland) across China. We found no clear geographic patterns in leaf nutrients of P. australis across China, except for leaf N: P ratio increasing with altitude. Leaf N and N:P decreased with mean annual temperature (MAT), and leaf N and P were closely related to soil pH, C:N ratio and available P. Redundancy analysis showed that climate and soil variables explained 62.1% of total variation in leaf N, P and N: P. Furthermore, leaf N in temperate region and leaf P in subtropical region increased with soil available P, while leaf N: P in subtropical region decreased with soil pH. These patterns in P. australis different from terrestrial plants might imply that changes in climate and soil properties can exert divergent effects on wetland and terrestrial ecosystems.