文献类型：期刊文献

英文题名：Patterns of leaf nitrogen and phosphorus stoichiometry among Quercus acutissima provenances across China

作者：Wu, Tonggui[1] Wang, G. Geoff[2] Wu, Qianting[1,3] Cheng, Xiangrong[1] Yu, Mukui[1] Wang, Wan[1] Yu, Xuebiao[3]

第一作者：吴统贵

通信作者：Yu, MK[1]

机构：[1]Chinese Acad Forestry, Res Inst Subtrop Forestry, Fuyang 311400, Zhejiang, Peoples R China;[2]Clemson Univ, Sch Agr Forest & Environm Sci, Clemson, SC 29634 USA;[3]Hainan Univ, Coll Environm & Plant Protect, Haikou 570228, Hainan, Peoples R China

年份：2014

卷号：17

期号：1

起止页码：32-39

外文期刊名：ECOLOGICAL COMPLEXITY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000331679000003)】；

基金：The project was supported by the Natural Science Foundation of Zhejiang Province (No. LY12C16008), the Key Foundation of Science and Technology of Zhejiang Province (No. 201102016) and the National Natural Science Foundation of China (No. 31200533). We thank Lauren Pile and two anonymous reviewers for their helpful comments.

语种：英文

外文关键词：Quercus acutissima; Provenance test; Leaf N, P stoichiometry; Geographic origin; Variation and stability

摘要：Provenance tests of forest trees provide an opportunity for assessing the intraspecific variation in leaf stoichiometry because climatic and edaphic differences associated with its geographic location are excluded. We determined the leaf N and P concentrations and N:P ratios for 31 Quercus acutissima provenances, and found there were significant differences in leaf N and P concentrations as well as in N:P ratios among these provenances. When grown under the same environmental conditions, the 31 provenances still retained significant patterns associated with their geographic origins. Leaf N and P concentrations declined toward the equator as mean annual temperature (MAT) increased, which can be explained by temperature-plant physiological stoichiometry. Leaf N concentration and leaf N:P ratios increased with increasing longitude due to the distribution of soil N content. Leaf P concentration initially decreased with increasing mean annual precipitation (MAP) up to 1500 mm y(-1), but then increased with further increase of MAP. Although there were significant differences in leaf N:P ratios among the 31 provenances, the relatively small coefficient variation (CV) in leaf N:P ratios and weak relationships between leaf N:P ratios and geographic origins, suggested a lower variation in leaf stoichiometry within the species when environmental influence was exclude in a common garden. (C) 2013 Elsevier B.V. All rights reserved.