保定市环城林带生态效益分析

Research on Ecological Benefit of City Ring Forest Belt in Baoding City

通过调查将保定环城林带分成不同郁闭度、林带宽度、群落结构。并定点定时测定绿地中心和对照点的湿度、温度、噪音、粉尘、空气中细菌数。结果表明,林带绿地郁闭度、宽度增加,其降温增湿、滞尘、降噪功能越明显,而抑菌能力却下降;群落结构类型对林带生态效益的影响依次是乔灌草>乔灌>乔草>灌草。

This study aimed to classify the city ring forest belt of Baoding City into different canopy density,forest belt width and community structure and measure the humidity,temperature,noise,dust and bacteria amount in the air regularly in the greenbelt center and CK locations.The results showed that increasing canopy density and forest belt width has obvious effect on reducing the temperature,increasing the humidity,holding dust and reducing noises,but the antibacterial effect declines.The effect of community structure types on ecological benefit gradually declines as Arbor-Bush-Grass 〉 Arbor-Bush 〉Arbor-Grass〉Bush-Grass.