极端干旱区胡杨叶与果实形态多样性研究

Morphological Diversity of Leaf and Fruit of Populus euphratica in Extreme Arid Areas

胡杨是极端干旱区天然分布的唯一成林高大乔木树种,具有重要生态和经济价值。胡杨在适应干旱区环境中表现出很多特殊性。采用样方调查法,分析胡杨叶片形态和果实分布对其特殊的生境形态适应特征。结果表明,胡杨叶形态及空间分布、果实形态及分布格局、小枝结构均表现出一定的适应特点,以提高胡杨水分有效利用、抗高温干旱的能力。

Populus euphratica is the only naturally - distributed tall arbor species in arid desert regions of Northwestern China, which has important ecological and economic value. The adaptive capacity of Populus euphratica in arid desert regions is significance. The effect of leaf morphology and distribution pattern of fruit on habitat adaptability has been analyzed. The results show that the morphology and spatial distribution of leaf, morphology and distribution pattern of fruit, twig structure have certain characteristics, which strengthened the utilization of light and water, and enhanced the adaptability to high temperatures and drought environment.