论文部分内容阅读
[目的]通过对光合生理指标和形态学指标的对比,探讨黄山松和马尾松对不同海拔的适应性。[方法]选取黄山风景区365、882m 2个海拔的马尾松群落和882、1 575 2个海拔的黄山松群落为研究对象,分别测定其针叶长、叶面积、单根叶重以及比叶面积等形态指标和光合速率、蒸腾速率、气孔导度、胞间CO2浓度等光合生理指标。用Duncan多重比较方法,检验了种内和种间差异。物种的参数测定使用LI-6400便携式光合测定仪等工具,数据整理和分析使用Spss18.0和Excel等软件。[结果]同一物种在不同海拔各形态指数差异性在0.05水平显著;同一海拔的不同物种形态指数差异性不显著(P>0.05);光合生理参数在种内和种间差异性均不显著(P>0.05)。[结论]在长期的进化过程中,黄山松和马尾松通过表现型的改变维持了其生理生态的稳定性,很好地适应了当地高山严酷的环境,即二者均对山地具有较强的适应能力。
[Objective] The study aimed to discuss the adaptability of Pinus taiwanensis and Pinus massoniana to different elevations by comparing the photosynthetic physiological indices and morphological indexes. [Method] A total of 365,882 m 2 Pinus massoniana community and 882,1 575 Pinus taiwanensis communities at Huangshan scenic spot were selected as the research object. The length of needles, leaf area, single leaf weight, Area and other morphological indicators and photosynthetic rate, transpiration rate, stomatal conductance, intracellular CO2 concentration and other photosynthetic physiological indicators. Duncan multiple comparisons were used to examine intraspecific and interspecific differences. Species parameters using LI-6400 portable photosynthesis analyzer and other tools, data sorting and analysis using Spss18.0 and Excel and other software. [Result] The morphological difference of the same species at different altitudes was significant at 0.05 level. The morphological indices of different species at the same altitude were not significantly different (P> 0.05). The photosynthetic physiological parameters were not significantly different between species and species P> 0.05). [Conclusion] During the long-term evolution process, Pinus taiwanensis and Pinus massoniana maintained its physiological and ecological stability through the phenotypic changes, which were well adapted to the harsh local environment of the mountain, that is, adaptability.