2011•Protection Forest Science and TechnologyRequires access
Characteristics Analysis of Mainly Phosiological Parameters of Eight Kinds of Broad-leaved Trees in Semiarid Area in Western Heilongjiang Province
Ye Gao
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Abstract
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.