黑龙江省西部半干旱区8种阔叶乔木主要生理参数的特征分析

采用Li-6400便携式光合测定系统对黑龙江省西部半干旱区8种阔叶乔木主要生理参数进行了观测（盆栽试验）与比较分析。结果表明：随着光强的梯度变化,各树种的主要生理参数表现出不同程度的差异;通过对这些参数的平均值进行系统聚类分析,结果为：银中杨、349柳、DN113杨属于高光合、中蒸腾、高水分利用效率树种,山新杨、109...

Characteristics Analysis of Mainly Phosiological Parameters of Eight Kinds of Broad-leaved Trees in Semiarid Area in Western Heilongjiang Province

Main physiological parameters of eight kinds of broad-leaved trees were observed comparatively analyzed by using Li-6400 portable photosynthesis system for semiarid area in western Heilongjiang province.Result shows that： with the light intensity gradient,the main physiological parameters of the species shows different degrees of difference;by the average of these parameters for cluster analysis.The result is： Populus alba × P.berolinensis,349 willow,DN113 poplar belong to high-photosynthesis,middle-transpiration high-water-use-efficiency species;Populus davidiana×P.bolleana,109 willow belong to middle photosynthesis,middle transpiration,middle-water-use-efficiency species;Populus pseudo-cathavana ×P.doltoides is high-photosynthetic,high-transpiration-water-consumption,middle-water-use efficiency species;Populus deltoides×P.cathayana is middle-photosynthetic,high-transpiration-water-consumption,middle-water-use-efficiency species;Populus simonii×P.nigra is low-photosynthesis,low-transpiration water-saving,low-water-use-efficiency species.Measurement results reveal adaptability in the production physio-ecological characteristics of the real performance of these species;it provide a physiological basis for selecting drought-resistant water-saving species for this area.