大气-水体系统中PAR传输模式及湖泊初级生产力
A Model of PAR Transfer in Atmosphere-Water System and Primary Productivity of Lake
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摘要: 给出了一种大气-水体系统中PAR的传输模式,并利用太湖的气象和实测悬浮粒资料计算水体中PAR的时空变化.模式中考虑了大气的气溶胶、臭氧、水汽和CO2的效应以及水面风浪、水中黄质、悬浮粒和浮游藻类的多次散射和吸收过程.最后,利用生物-光模式,计算了太湖的初级生产力.结果基本上能反映水中初级生产力随水深的变化趋势.Abstract: A model of photosynthetically available radiation (PAR) transfer in atmosphere-water system is put forward to calculate the spatial and temporal variation of PAR in the water of Taihu Lake by using meteorological data and measured suspensions. The effects of aerosol, ozone, water vapor and carbon dioxide in the atmosphere as well as the multiscattering and absorption of water surface wave, yellow substance, suspended particles and phytoplanktons in the water are taken into consideration. Finally, the primary productivity of Taihu Lake is calculated with bio-optical model. It is shown that the results may basically reflect the variation tendency of primary productivity with water depth.
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Key words:
- atmosphere-water system /
- PAR transfer /
- primary productivity /
- model
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