兰州市南北两山绿化工程对原生植被的影响

Study on the impact of forestation on the prophyta in the South and North Mountains in Lanzhou

在甘肃省兰州市西固区扎马台采用栽植柠条、柽柳、侧柏、紫穗槐进行绿化,并修建上水工程实施灌溉,5年后原生植被已发生了明显变化:植物科、属、种普遍增加,种类组成趋于丰富,群落层次结构复杂化,植物生活型多样化,植物水分生态型趋于中生化和湿中生化,表明绿化和灌溉已使原生植被发生明显的进展演替,植物群落结构趋于稳定,植物生存环境良性化。

Caregana microphylla , Tamarix ramosissima , Platydadus orientalis and Amorpha fruticosa were used in the forestation in Zha Matai,Xigu District of Lanzhou and the irrigation was provided as well. The investigation showed that the prophyta changed greatly 5 years later. In general,the numbers of familia,genus and species of plants were increased and the life forms of plants were diversified. The water condition of plants was inclined to mesophytie and wet mesophytic environments. All these results showed that the prophyta was in progress succession and the structure of plant communities became stabilized and the habitat for the plants became better due to the forestation and irrigation.