喀斯特山地不同景观树种的光合特性及生态适应性  

Photosynthetic Characteristics and Ecological Adaptability of Different Landscape Tree Species in Karst Mountainous Area

作　　者：魏媛[1] 胡刚 杨萍[3] 周家春 

机构地区：[1]贵州财经学院资源与环境管理学院,贵州贵阳550004 [2]贵州省贵阳市林业局,贵州贵阳550002 [3]贵州大学林学院,贵州贵阳550025 [4]贵州省都匀经济开发区农村工作局,贵州都匀558000

出　　处：《贵州农业科学》2013年第1期65-68,共4页Guizhou Agricultural Sciences

基　　金：国家自然科学基金项目"退化喀斯特森林自然恢复过程中土壤生物学质量演变机理"(30872076);贵州省科技支撑计划项目"贵阳城郊喀斯特山地树种多样性选择及园林化建设规划设计示范"[黔科合SY字确(2011)3110];贵州省教育厅科技创新人才支持计划"退化喀斯特生态系统恢复与重建"

摘　　要：为了探明贵阳市郊喀斯特山地不同景观树种的光合生理特性及生态适应性,为其景观树种的选择与配置提供参考,以贵阳市郊生态环境十分脆弱的喀斯特山地不同景观树种为研究对象,利用Li-6400光合作用测定仪对其光合特性进行测定。结果表明:15种景观树种的光合特性及生态适应性存在一定差异,桂花、桤木、无患子、乐昌含笑4种景观树种具有较高的光合速率、水分利用效率和光能利用率,能较好地适应研究区的生态环境,可作为研究区植被恢复的首选树种;亮叶含笑、厚朴、飞蛾槭和红翅槭4种景观树种属于耗水型树种,其适应性最差,不宜作为研究区植被恢复树种;其余7种树种的生态适应性居中,也可作为喀斯特山地植被恢复的景观树种。The photosynthetic characteristics karst mountainous area was measured by photosynthetic physiological property and ecolog and collocation of these landscape trees. The resu physiological property and ecological adaptab cremastogyne, Osmanthus fragrans and Micheli of 15 different landscape tree species grown in Guiyang Li-6400 photosynthesis determinator to study their ical adaptability and to provide a reference for selection Its showed that there was difference in the photosynthetic fifty between 15 landscape trees. Sapindus, Alnus a chapensis with higher photosynthetic rate, water use efficiency and light use efficiency can be selected for vegetation recovery in Guiyang karst mountainous area firstly. Micheliafulgens, Magnolia officinalis, Acer oblongurn and Aceraceae fabri with poor adaptability can not be selected for vegetation recovery in Guiyang karst mountainous area. Seven other landscape tree species with the common ecological adaptability can be selected for vegetation recovery in Guiyang karst mountainous area too.

关 键 词：景观树种 光合特性 生态适应性 喀斯特山地 

分 类 号：S518[农业科学—作物学]