【摘要】 以北京城近郊8个区为研究范围,参考目前国内外有关城市绿化生态效益及经济价值的研究方法,通过建立常用的37种园林植物个体的绿量计算模型,结合园林植物的个体生理特性测定(主要包括园林植物净光合速率测定、蒸腾速率测定、滞尘测定),以及经济评价指标和方法研究,最终确定了北京城市园林植物吸收二氧化碳(CO2)、释放氧气(O2)、增湿降温、滞尘的生态效益及其对应的经济价值定量计算方法。同时,为提高绿化生态效益和经济价值评价的可操作性、简化专业运算的过程、以Access数据库作为绿量计算参数源,采用Visual Basic语言研制开发了绿化生态效益和经济价值评价系统。更多还原

【Abstract】 A quantitative economic evaluation method for ecological benefit of garden afforestation was established by incorporating the model of leaf-area about thirty-seven species plant, the physiological characteristic measure of plant including net photosynthesis rate, transpiration rate, dust retention, and the research on economic evaluation index system and relevant method. This quantitative economic evaluation method for ecological benefit includes absorbing Carbon Dioxide, releasing Oxygen, increasing humid and fall temperature, dust retention of plant at eight district in Beijing. Also, in order to enhance manipulate efficiency and simply professional operation procedure, regarded Access database as parameter source, the system about evaluation on ecological benefit of garden afforestation and relative economy evaluation were developed by applying Visual Basic software.更多还原