柳州市主城区河岸植被三维绿量及生态效益分析

通过对柳州市主城区河岸植被三维绿量及生态效益进行定量化研究，为城市河岸绿地景观生态环境建设提供一些科学依据与参考借鉴，为实现“自然-人类-水体”的可持续发展奠定理论基础。在逐株实测的基础上，运用绿量方程计算植被三维绿量，通过三维绿量能换算出植物产生的生态效益。结果表明：主城区河岸植被中提供绿量最大的是常绿乔木，占总量的78.76%；生态效益的产生仍以常绿乔木最为突出，在释氧固碳量方面，常绿乔木占总量的86.68%，在吸收SO2、夏季蒸腾、滞尘量方面，常绿乔木占总量的78.77%，而灌木和草本的绿量值及生态效益值则非常小。植物多样性、植物配置模式、植物养护管理等均为河岸植被三维绿量大小及生态效益产生的主要影响因素。

Analysis on 3- dimension Green Quantity and Ecological Benefits of plants on Main Districts River bank in Liuzhou

Quantifying researching on 3-dimension green quantity and ecological benefit of plants on main districts river bank in Liuzhou, may provide some scientific basis and reference for landscape ecological environment construction of urban bank green land and the theoretical foundation for the realization of ‘ nature-human-water ’ sustainable development. Basing on the measurement of each tree, used green quantity equation to calculate the 3-dimension green quantity of plants, through the 3-dimension green quantity of plants, people could convert the ecological benefit. And the results were as follows： the evergreen tree provided the biggest green quantity, which accounted for 78.76% of the total; the evergreen tree provided the biggest ecological benefit, in the respect of releasing oxygen quantity and absorbing carbon dioxide quantity, the evergreen tree accounted for 86.68% of the total, in the respect of absorption sulphur dioxide quantity, transpiration quantity and laying dust quantity, the evergreen tree accounted for 78.77% of the total, but the bush and the herb were very small. The main influence factors of 3-dimension green quantity and ecological benefit of plants were plant diversity, plant disposition, maintenance and management.