文献类型：期刊文献

英文题名：Seasonal dynamics of foliar C-13 and nutrient concentration of Chinese chastetree and spine jujube in foothill rock outcrop habitat of the southern Taihang Mountains, Central China

作者：He, Chunxia[1,2] Zhang, Jinsong[1,2] Meng, Ping[1,2] Gao, Jun[1,2]

第一作者：何春霞;He, Chunxia

通信作者：Gao, J[1];Gao, J[2]

机构：[1]Chinese Acad Forestry, Res Inst Forestry, State Forestry Adm, Key Lab Tree Breeding & Cultivat, Beijing 100091, Peoples R China;[2]Nanjing Forestry Univ, Coinnovat Ctr Sustainable Forestry Southern China, Nanjing 210037, Jiangsu, Peoples R China

年份：2019

卷号：30

期号：1

起止页码：45-56

外文期刊名：JOURNAL OF FORESTRY RESEARCH

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000455265300005)】；

基金：This work was supported by the financial assistance provided by the National Natural Science Foundation of China (No. 31400385), the National Key Technologies R&D Program of China (No. 2015BAD07B0202), the Specialized Research Fund for Young Scholars of the Research Institute of Forestry, Chinese Academy of Forestry (No. RIF2013-08), and the Fundamental Research Funds for the Central Non-profit Research Institution of CAF (No. CAFYBB2014QB027).

语种：英文

外文关键词：Global climatic change; Agroforestry; Natural regeneration; Deciduous plant; Arid land

摘要：In this study, in situ investigation was conducted on Chinese chastetree (Vitex negundo var. heterophylla) and spine jujube (Ziziphus jujuba var. spinosa) during early, developed, and closing succession stages. Monthly data were recorded for foliar C-13 values and foliar N, P, and K concentrations from May to October. Foliar C-13 values declined with time and differences by succession stage varied by species. Older spine jujube displayed higher foliar N concentration while foliar P concentration was inversely related with N. Chinese chastetree had lower foliar K concentration than spine jujube. Foliar C/N ratio declined during the dry season and increased in the wet season. Foliar N/P ratio increased during the dry season and declined to its initial level until October, when it increased again. Foliar C-13 value was positively correlated with foliar N concentration. Foliar P and K concentrations were positively correlated to each other. In conclusion, the two shrubs had contrasting strategies of water use efficiency during their succession, but water use efficiency of both species was promoted by N availability and limited by P availability.