珲乌高速公路对路域植物物种多样性的影响

Impact of Hunchun-Ulanhaote Expressway on Road Area Plant Species Diversity

摘要: 采用样线法对珲乌高速公路沿线4种植被类型进行实地调查，探讨其物种组成及物种多样性在垂直公路方向上的梯度变化规律。结果表明：1) 珲乌高速公路的建设及运营，对垂直公路方向不同梯度部位的植物组成与丰富度产生显著影响；2) 公路对沿线植物多样性的影响包括正、负两方面作用，但总体上以负作用为主；3) 公路对沿线植物群落的影响至少能达到20 m左右，影响强度随着与公路距离的增加而逐渐减弱。

Abstract: A field survey of four vegetation types along the Hunchun-Ulanhaote Expressway was conducted using the sample line method to explore the gradient changes of their species composition and species diversity in the vertical highway direction. The results showed that: 1) The construction and operation of the Expressway had a significant impact on the plant composi-tion and richness of different gradients in the vertical highway direction; 2) The impact of the highway on the plant diversity along the highway included both positive and negative effects, but overall the negative effect was dominant; 3) The impact of the highway on the plant community along the highway could reach at least 20 m, and the intensity of the impact decreased gradually with the increase of the distance from the highway.