文献类型：期刊文献

中文题名：栓皮栎叶片δ^(13)C和δ^(15)N的纬向趋势及其影响因子

英文题名：Latitudinal trends in foliar δ^(13)C and δ^(15)N of Quercus variabilis and their influencing factors

作者：刘建锋[1,2] 张玉婷[1] 倪妍妍[3] 黄跃宁[1] 江泽平[1,3]

第一作者：刘建锋

机构：[1]中国林业科学研究院林业研究所;[2]国家林业局林木培育重点实验室;[3]中国林业科学研究院森林生态环境与保护研究所

年份：2018

卷号：29

期号：5

起止页码：1373-1380

中文期刊名：应用生态学报

外文期刊名：Chinese Journal of Applied Ecology

收录：CSTPCD;;Scopus;北大核心:【北大核心2017】；CSCD:【CSCD2017_2018】；PubMed;

基金：国家自然科学基金项目(41371075);中央级公益性科研院所基本科研业务费专项(CAFYBB2018ZB001)资助~~

语种：中文

中文关键词：栓皮栎;树龄;纬度;碳氮同位素;环境因子

外文关键词：Quercus variabilis;ontogeny;latitude;carbon and nitrogen isotope;environmentalfactor

分类号：S792.18

摘要：以东亚广布种栓皮栎为例,通过对南北样带(26°—40°N)上7个群体的调查取样,并结合2个生活史阶段,探讨栓皮栎碳氮同位素比值随纬度环境的变异规律.结果表明:在纬向梯度上,栓皮栎叶片δ^(13)C和δ^(15)N随纬度的增加分别呈现非线性的增加和下降趋势,且成年树叶片δ^(13)C和δ^(15)N均显著高于幼树;同时,树龄和纬度对叶片δ^(15)N和δ^(13)C均无显著交互作用,表明栓皮栎幼树和成年树纬向环境变化的响应较为一致.随机森林模型结果显示,栓皮栎叶片δ^(15)N主要受土壤养分,如土壤有机质、磷和氮含量的影响,而叶片δ^(13)C主要受水分因子,如空气相对湿度、降水量等的影响.
We aimed to reveal the latitudinal trends in foliar δ13C and δ15N of Quercus variabilis,a widely distributed species in East Asia,associated with two ontogenetic stages(juvenile and mature trees） along a North-South transect(26°-40° N）. The results showed that mature trees had higher foliar δ13C and δ15N values than juveniles. Foliar δ13C and δ15N values of trees with both ontogenetic stages were nonlinearly increased and decreased with latitude,respectively. No interaction between ontogenetic stage and latitude for the changes of foliar δ15N and δ13C indicated that both ontogenetic stages across the transect consistently responded to latitudinal environmental variations. Results from the random forest models indicated that foliar δ15N of Q. variabilis was mainly affected by soil nutrient contents,e.g.,soil organic matter,phosphorus,nitrogen,whereas dominated factors for foliarδ13C were related to moisture,such as relative humidity,precipitation of growing season.