文献类型：期刊文献

英文题名：Species-specific spatial and temporal variation in foliar nitrogen and phosphorus in mangrove plants

作者：Jiang, Zhongmao[1] Liao, Baowen[1] Xin, Kun[1] Wu, Feng[1,2] Sanders, Christian J.[3,4,5] Xiong, Yanmei[1]

第一作者：姜仲茂

通信作者：Xiong, YM[1]

机构：[1]Chinese Acad Forestry, Res Inst Trop Forestry, Guangzhou 510520, Peoples R China;[2]Zhaoqing Xinghu Natl Wetland Pk Management Ctr, Zhaoqing 526060, Peoples R China;[3]East China Normal Univ, State Key Lab Estuarine & Coastal Res, Shanghai 201100, Peoples R China;[4]East China Normal Univ, Inst Ecochongming, Shanghai 201100, Peoples R China;[5]Southern Cross Univ, Natl Marine Sci Ctr, Sch Environm Sci & Engn, Coffs Harbour, NSW 2450, Australia

年份：2021

卷号：667

起止页码：15-24

外文期刊名：MARINE ECOLOGY PROGRESS SERIES

收录：;Scopus(收录号：2-s2.0-85117491064);WOS:【SCI-EXPANDED(收录号:WOS:000665462100002)】；

基金：This research was supported by the National Natural Science Foundation of China (41776103 and 41876094) and the Key-Area Research and Development Program of Guangdong Province (2020B020214001).

语种：英文

外文关键词：Nutrients; Stoichiometry; Coastal; Mangroves; Leaf trait; N:P ratio

摘要：Foliar nitrogen (N) and phosphorus (P) concentrations and stoichiometry affect the productivity and functioning of plants, and they play an important role in biogeochemical processes. We investigated spatial and temporal variation in foliar nutrient concentrations and N:P stoichiometry in mangroves of China, and partitioned the relative importance of taxonomic, climatic and edaphic factors in explaining the variations. To assess spatial patterns, we collected mature leaves of 3 broadly distributed mangrove species in China spanning a latitudinal gradient. To assess temporal variation in leaf stoichiometry, we selected 1 site and sampled leaves of 4 species monthly over 12 mo. Positive relationships were found between foliar nutrient concentrations and latitude or soil nutrient concentrations in individual species. Species accounted for 76, 46 and 18 % of the spatial variation in foliar N, P and N:P mass ratio, respectively, while soil nutrients and climate accounted for only small portions of the variation (<= 8.3 %). Different species showed no consistent patterns across temporal variation in foliar nutrient concentrations or stoichiometry, and species accounted for 94, 86 and 26% of the variations in foliar N, P and N:P ratio, respectively, throughout the year, while climatic factors accounted for only a very small portion of the variations (<= 0.5 %). Our results suggest that species affect foliar nutrient concentrations and stoichiometry in mangroves more strongly than environmental factors, and that stoichiometric homeostasis in mangroves may play an important role in mitigating the effects of environmental changes in coastal areas.