城市森林生态系统太阳辐射能利用分析

Analysis of Solar Radiating Energy in Ecological System of Urban Forests

城市自然环境本底的改变对城市森林的生长发育有深刻的影响.城市森林生态系统接受太阳辐射的强度、光照时间都小于自然环境下的最大可照时间,确定城市环境中不同立地树木可获得太阳辐射强度和光照时间,对提高城市森林生态系统太阳辐射能利用效率,发挥城市森林的功能和作用有重要意义.在调查分析的基础上,提出了城市森林两类不同立地环境下太阳辐射能利用的计算方法.

Environmental change in cities has great effects on the growth of urban forests. The intensity of solar radiation and the shining time in city areas are less than those in the natural conditions. In order to utilize the functions of urban forests system and improve the efficiency of solar radiation on forests ecological system, it is very important to make sure of the intensity of solar radiation and the shining time available to various sites of urban forests. This paper presants some methods to calculate the intensity of solar radiation and the shining time in two different urban environment conditions.