生态环境学报2017，Vol.26Issue(5)：754-762,9.DOI:10.16258/j.cnki.1674-5906.2017.05.005
区域尺度上麻栎叶片性状对环境因子的响应规律
Response of Leaf Traits of Quercus acutissima to Environmental Factors at Regional Scale
摘要
Abstract
Leaf traits play crucial roles in plant adaptation and regulation to complex environmental conditions. The variation of leaf functional and morphological traits of a single species at regional scale is still unclear. In this study, 25 natural populations of Quercus acutissima were selected to analyze the variation of 11 leaf traits (specific leaf area, Narea, Parea, Nmass, Pmass and N:P and other morphological traits such as leaf area, leaf perimeter, leaf length, leaf width, length-width ratio) at regional scale, which based on field investigation and lab measurements. The results showed that, (1) the leaf area varied from 28.53 cm2 to 59.41 cm2, leaf perimeter varied from 31.21 cm to 47.54 cm, leaf length varied from 11.72 cm to 17.25 cm, leaf width varied from 3.41 cm to 5.46 cm, length-width ratio was 2.79 to 3.75, the specific leaf area varied from 77.38 cm2·g-1 to 152.71 cm2·g-1, Nmass varied from 17.90 mg·g-1 to 26.20 mg·g-1, Pmass varied from 0.68 mg·g-1 to 1.61 mg·g-1, Narea varied from 1.42 mg·cm-2 to 2.63 mg·cm-2, Parea varied from 0.07 mg·cm-2 to 0.13 mg·cm-2, N:P was 14.01 to 28.80. (2) The specific leaf area, Nmass, and leaf width of Q. acutissima decreased firstly and then increased with the increase of elevation (P<0.05), and Narea showed almost opposite trend (P<0.05). (3) The leaf area and length increased firstly and then decreased with the increase of latitude (P<0.05). (4) The leaf area, length and width increased firstly and then decreased with the increase of annual average temperature (P<0.05). And (5) the leaf length increased firstly and then decreased with the increase of annual precipitation, and it was positively correlated with the leaf area (P<0.05). The leaf functional traits were mainly affected by altitude, water, heat or hydrothermal changes, while the leaf morphological traits were influenced by altitude and latitude, and which were closely related to meteorological factors. The results of this study are beneficial to reveal the changes of plant leaf traits and their environmental mechanisms at the regional scale, which will provide a foundation for predicting changes of plants traits and adaptation in the future environment.关键词
叶片性状/气象因子/海拔/纬度/麻栎Key words
leaf traits/meteorological factors/altitude/latitude/Quercus acutissima分类
农业科技引用本文复制引用
王晶媛,张慧,虞木奎,方炎明,吴统贵..区域尺度上麻栎叶片性状对环境因子的响应规律[J].生态环境学报,2017,26(5):754-762,9.基金项目
国家自然科学基金项目(31570853 （）
31370666) （）
