50年来兰州市景观演变及生态影响

The landscape evolvement and its ecological influence in Lanzhou recent 50 a

根据建国以来兰州市景观演变的特点,把其分成了3个阶段,即:水平扩展阶段、更新扩展阶段、差异更新扩展阶段;并进一步以气温、土壤、相对湿度和风速等4个生态环境因素对兰州市由于景观演变而引起的生态效应进行了分析,得出兰州市生态环境日趋恶化的结论。

The landscape evolvement in Lanzhou falls into 3 stages according to its characteristics： horizontal extension, renewal extension, and differentia renewal extension. This paper further analyses the influence of 4 ecological environment elements： air temperature, soil, relative humidity, and wind speed on the ecological effect caused by landscape evolvement in Lanzhou. Thus, the conclusion is that the ecological environment in Lanzhou is deteriorating now.