京九长廊深圳段绿化模式及其生态学意义

Planting Models Along Railroad AndTheir Ecological Significance

京九铁路深圳布吉段全长 3 km,应用 14科、18种岭南乡土阔叶树 ,设计 12种配置模式 ,营建 4 2 hm2铁路沿线绿化防护林。其中 ,常绿与落叶树种比例为 2∶ 1,乔木、小乔木和灌木种比例为6∶ 2∶ 1,防火树种与景观树种比例为 1∶ 2 ,防护林与风景林的面积比例为 8∶ 13。本文分析了上述绿化模式的生态学基础 ,从生物多样性、植被地带性、生态功能综合性、景观走廊的美学特性及人文关怀意识等方面 。

The study on establishment of forest corridor along railroad from Beijing to Jiulong concerns mainly on the structure and function of the plantation.Eighteen tree species of fourteen families,most of which are broad leaved species native to Lingnan areas,are employed in twelve models for improving the ecological benefits of the fotest corridor.The ratio of evergreen tree species to the deciduous is 2∶1,high trees,low trees and shrubs 6∶2∶1,the fire protection trees to landscape species 1∶2,and protection forest to scenic forest 8∶13. At an attempt to construct the landscape corridor in Shenzhen scientifically and practically,the models are experimented and developed in accordance with principals of biodiversity,function complexity of forest ecosystem and landscape ecology.