文献类型：期刊文献

英文题名：Latitudinal patterns of leaf N, P stoichiometry and nutrient resorption of Metasequoia glyptostroboides along the eastern coastline of China

作者：Zhang, Hui[1] Guo, Weihong[1] Yu, Mukui[1] Wang, G. Geoff[2] Wu, Tonggui[1]

通信作者：Wu, TG[1]

机构：[1]Chinese Acad Forestry, Res Inst Subtrop Forestry, East China Coastal Forest Ecosyst Long Term Res S, Hangzhou 311400, Zhejiang, Peoples R China;[2]Clemson Univ, Dept Forestry & Environm Conservat, Clemson, SC 29634 USA

年份：2018

卷号：618

起止页码：1-6

外文期刊名：SCIENCE OF THE TOTAL ENVIRONMENT

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000424130500001)】；

基金：This work was supported by the Fundamental Research Funds for the Central Non-profit Research Institution of CAF (CAFYBB2014ZD002) and National Natural Science Foundation of China (31570583). The constructive comments provided by the reviewers have greatly improved this manuscript. We also thank Bridget Blood from Clemson University for language improvement.

语种：英文

外文关键词：Leaf N, P stoichiometry; Nutrient resorption; Climatic factors; Soil nutrients; Metasequoia glyptostroboides

摘要：Latitudinal patterns of leaf stoichiometry and nutrient resorption were not consistent among published studies, likely due to confounding effects from taxonomy (e.g., plant distribution and community composition), and environment, which is also influenced by altitude and longitude. Thus, the latitudinal patterns and environmental mechanism could be best revealed by testing a given species along a latitude gradient with similar altitude and longitude. We determined nitrogen (N) and phosphorus (P) concentrations of green (leaf) and senesced leaves (litter) from eight Metasequoia glyptostroboides forests along the eastern coastline of China, with similar altitude and longitude. Leaf N, P concentrations increased along latitude, mainly driven by mean annual temperature (MAT), mean annual precipitation (MAP), annual evaporation (AE), aridity index (AI), and annual total solar radiation (ATSR); While leaf N: P ratio was stable with no latitudinal pattern. Nitrogen resorption efficiency (NRE) increased along latitude, and was also mainly influenced by MAT, MAP, AE, and AI. Phosphorus resorption efficiency (PRE) first increased and then decreased with latitude, which was impacted by soil available P. These results indicated that only climate (such as heat, water, and light) controlled the shift in leaf stoichiometry and NRE, while soil nutrient was likely responsible for the shift in PRE along eastern China. Our findings also suggested that leaf N, P stoichiometry and NRE displayed similar latitudinal patterns at regional scale when studied for a given species (this study) or multi-species (previous studies). (c) 2017 Published by Elsevier B.V.