应用生态学报2017，Vol.28Issue(9)：2849-2855,7.DOI:10.13287/j.1001-9332.201709.022
大连市黑松树木水分利用效率的环境响应
Environmental response of intrinsic water use efficiency of Pinus thunbergii in Dalian City,China
摘要
Abstract
Based on Pinus thunbergii growing in Dalian City,we developed the time series of tree radial growth,tree-ring stable carbon isotope ratio (δ13 C) and intrinsic water use efficiency (WUEi) in the period of 1951-2010,and studied their variation and the climate related significance.Radial growth of the pines showed a decrease trend,tree-ring δ13C decreased slightly,but WUEi increased significantly (P＜0.05) after 1980.Climate factors affected tree-ring width,δ13C and WUEi of the pines,and the effects showed seasonal variation.Temperatures respectively showed positive and negative correlations with radial growth of the pines in summer and winter,while monthly precipitation and relative humidity in June had positive correlations with tree-ring width in general.Monthly temperature had weakly positive correlations with δ13C and WUEi in March-September,and slightly negative correlation during the rest months of a year.Precipitation and relative humidity respectively had negative correlations with δ13C and WUEi in general.The rapid warming environment in the city contributed to the WUEi increase of urban trees.关键词
黑松/树木年轮/稳定碳同位素/水分利用效率/气候变化Key words
Pinus thunbergii/tree ring/stable carbon isotope ratio/intrinsic water use efficiency/climate change引用本文复制引用
阮亚男,萧英男,杨立新,周永斌,陈振举..大连市黑松树木水分利用效率的环境响应[J].应用生态学报,2017,28(9):2849-2855,7.基金项目
本文由国家自然科学基金项目(31370601,31670700,31570632,41601045,41571094,41271066)资助 （31370601,31670700,31570632,41601045,41571094,41271066）
This work was supported by the National Natural Science Foundation of China (31370601,31670700,31570632,41601045,41571094,41271066). （31370601,31670700,31570632,41601045,41571094,41271066）
