作　　者： ; ; ; ;

机构地区： 中山大学环境科学与工程学院

出　　处： 《中山大学学报（自然科学版）》 2006年第2期114-118,共5页

摘　　要： 应用野外调查与室内分析方法,分析比较了新建公路绿化带(<1 a)、旧建公路(15 a)绿化带以及研究区内针叶林和两类不同年龄常绿阔叶林的植物群落结构、生物多样性和土壤理化性质。结果表明,新路绿化带植物群落的群落结构最简单,旧路绿化带植物群落次之;与常绿阔叶林群落相比,公路绿化带植物群落的生物多样性较低,尤其是木本植物的物种多样性降低明显。新、旧公路绿化带土壤受扰动严重,土壤容重较大,粗砂粒含量偏高,粘粒含量偏低,新路尤为突出;新、旧公路绿化带植物群落土壤有机质含量和土壤速效养分含量相对其他三种植物群落偏低,新路绿化带相差较大,旧路绿化带相对新路绿化带稍有恢复。 Serious destruction of vegetation and heavy disturbance of soil were brought about by roads construction. The structure, species diversity, soil properties of forest in new road green belt （ 〈 1 year） , old road green belt （15 years）, Pinus massoniana forest and evergreen broad-leaved forest are compared in this study. The results show that the approximate order of the cover degree of forest is 40 years old evergreen broad-leaved forest 〉 20 years old evergreen broad-leaved forest 〉 Pinus massoniana forest 〉 forest in old road green belt 〉 forest in new road green belt. Compared with evergreen broad-leaved forests, species diversity of forest in road green belts is low. This is especially true for woody plants. The soil of new and old road green belts is seriously disturbed. Their soil bulk densities and coarse sand content are high; soil clay content, organic matter, available N, P and K are low compared with the other three forest communities. The differences are especially obvious in soil between new road green belt and evergreen broad-leaved forest.

关 键 词： 公路 公路绿化带 植物群落 生物多样性 土壤性质

领　　域： [生物学] [生物学]