Meteorological fac tors principal components of which effect on the above-ground net production were analysed by building math ematic model, and the main factor which had effect on net production was the atmospheric temperature in alpine meadow.

• 本文还通过所建立的数学模型，分析了矮嵩草草甸地上年净生产量对气象因子所响应的主次成分，说明在高寒草甸地区热量条件是影响牧草净生产量的主要因素。