【摘要】 作者在1982—1984年度对鲁北滨海盐土区的山东省沾化草场改良实验的獐茅(Aeluro-pus litttoralis var.sinensis)群落生长季内的群落动态及其与环境因子的关系进行了研究(其中1982—1983年配合草场站工作进行月份观测),认为温度的变化与群落生长季内的节律性有明显的相关性、根据生物量的变化,把一个完整的生长季划分为上升期和下隆期两个时期,并讨论了这两个时期中生物量、半月平均气温和时间的关系以及生物量和半月平均气温的关系。更多还原

【Abstract】 Aeluropus littoralis var.sinensis community is a main vegetation type of coastal salt meadows in Shandong Province.The growing season is from about March 20 to around December 10.During this period we took a series of samples for examination every 15 days.The measure- ments included:mean temperature of air and soil,precipitation,evapo- ration,capacity,air relative humidity,water and salt content of soil; height,coverage and biomass.The relationships between enviro- nmental factors and community characters had been analysed.The change of temperature not only delimits the beginning and the end of the growing season,but also has a close relationship with the various developments of this community——especially biomass. According to the changes of biomass,the whole growing season can be divided into two periods.The days before September are the increa- sing period;the days after September are the decreasing period. On this basis,the relationships between biomass （y）,air temperature （x） and time （t） have been discussed separately in the increasing period and the decreasing period.They are:during the increasing period: y=187.937/1+e^5.781-1.226t;x=27.31-0.362（t-8）²; during the decreasing period: y=213.776/1+e^{2.565t-10.647};x=22.3-0.491t²; y=213.776/1+e^{（298.865-13.402x-10.647）1/2}更多还原