MODELLING RELATIONSHIPS BETWEEN PHOTOSYNTHE TIC RATE AND ENVIRONMENTAL FACTORS IN DI FFERENT GROWING PERIODS IN ANEUROLE PIDIUM CHINENSE COMMUNITY
不同时期羊草群落光合速率与环境条件之间的关系模型

Based on data of the photosynthetic rate and the environmental factors in the typicai steppe of Inner mongolia, the relation models were dirived, respectively, for the four growth periods using progressively polybasic regression, in order to estimate the photosynthetic rate and productivity of the A.chinense commmunity. The results are as follows: 1. The community photosynthesis correlated mainly with light intensity and air temperature in the period from the early of to the middle of June and in th...