生态学杂志2017，Vol.36Issue(5)：1208-1214,7.DOI:10.13292/j.1000-4890.201705.021
塔里木盆地北缘荒漠典型植物叶片化学计量特征及其与土壤环境因子的关系
Leaf stoichiometric characteristics of typical desert plants and their relationships to soil environmental factors in the northern margin of the Tarin Basin
摘要
Abstract
Studies on the relationship between desert plant leaf stoichiometry and soil environmental factors are of great importance to clarify the mechanism of adaptation and feedback to the soil environment in the process of plant growth.The leaf stoichiometric characteristics of five desert plants (Populus euphratica,Tamarix ramosissma,Alhagi sparsifolia,Karelinia caspia and Phragmites australis) were analyzed and their relationships to soil environmental factors were studied by redundancy analysis (RDA).The results showed that the average contents of carbon (C),nitrogen (N) and phosphorus (P) were 451.65,16.98 and 1.08 mg · g-1 respectively,each lower than the global average level of plants,and the plant growth was more likely to be limited by both N and P.The leaf stoichiometric characteristics differed significantly among the five species,in which P.euphratica had the lowest C content,A.sparsifolia had the highest N content and N ∶ P ratio,and Ph.australis and K.caspia had the highest P content.Correlation analysis showed that there was extremely significant positive correlation between N content and P content,while there was no significant correlation between C content and N,P contents.According to RDA results,soil moisture content,salinity and pH value served as a good explanation for the difference of leaf stoichiometric characteristics,among which soil moisture was the major factor affecting leaf stoichiometric characteristics,while the effects of soil total N,total P,total dissolved solids,and organic C contents on leaf stoichiometric characteristics were relatively insignificant.关键词
化学计量学/土壤环境因子/荒漠植物/塔里木盆地Key words
stoichiometry/soil environmental factors/desert plant/Tarim Basin引用本文复制引用
孙力,贡璐,朱美玲,解丽娜,李红林,罗艳..塔里木盆地北缘荒漠典型植物叶片化学计量特征及其与土壤环境因子的关系[J].生态学杂志,2017,36(5):1208-1214,7.基金项目
国家自然科学基金项目(41461105)资助. （41461105）
