模拟鸟巢式体育场结构对场内草坪生长环境的影响

通过模拟鸟巢式体育场的框架结构来研究其对场内环境因子的影响，分别于2006、2007年夏、冬季连续测定了模拟鸟巢式体育场内不同区域的光照强度、直射光照时间、温度及相对湿度等草坪生长环境指标。结果表明：模拟鸟巢式体育场内的光照强度与直射光照时间显著低于场外对照，夏、冬2季场内的平均光照强度分别为场外对照的23．98％～68．07％和8．00％-60．47％；平均直射光照时间分别只有场外对照的12．08％和3．34％。模拟鸟巢式体育场内的温度和相对湿度则显著高于场外对照，夏季场内外气温的最大差异分别为7．8℃和7．5℃，冬季场内外气温的最大差异只有2．4℃；夏季场内外相对湿度的最大差异分别为6．0％和7．0％，冬季场内外相对湿度的最大差异高达13．0％。文中还讨论了上述草坪生长环境因子的变化可能给场内运动草坪养护管理所带来的困难。

Effects of Simulated Nest-type Stadium on Growth Environment of Sports Turf

A simulated Nest-type Beijing Olympic Stadium was built to study its effects on environmental factors. Light intensity and direct radiation time, temperature and relative humidity, were measured during the summer and winter of 2006 and 2007, respectively. The results showed that light intensity and direct radiation time in the simulated stadium were significantly lower than the outside control. Average light intensities in the simulated stadium were only 23.98%-68.07% and 8.00%-60.47% of the control during the summer and winter, respectively. Average light direct radiation time was as short as 12.08% of the control in the summer, and only 3.34% of the control in the winter. Temperature and relative humidity in the simulated stadium were significantly higher than the out- side control, The highest air temperature increases in the simulated stadium were 7.8 ~C, 7.5 ~C in the summer, and 2.4 ~C in ihe win- ter, respectively. The highest relative humidity increases in the simulated stadium were 6.0%, 7.0% in the summer, and 13.0% in the winter, respectively. The potential problems caused by changes of such environmental factors to sports turf management in the simu- lated stadium were also discussed.