内蒙古锡林河流域羊草草原生物量动态的研究

STUDY ON THE BIOMASS OF ANEUROLEPIDIUM CHINENSE GRASSLAND IN XILIN RIVER BASIN OF INNER MONGOLIA

本文对内蒙古锡林河流域羊草草地上生物量的季节动态、根系生物量的分布以及地下、地上生物量之间的关系进行了分析,结果表明群落及羊草种群地上生物量呈“S”型曲线形式增长,地下生物量由上至下呈负指数形式变化,地上生物量和地下生物量之间的关系遵循异速增长率,并建立了地上生物量积累与土壤水分、降雨量和积温三个因子的多元回归方程。

Seasonal dynamics of aerial biomass, distribution of root biomass, relation of aerial biomass increasing with environmental factors were studied. Results show that aerial biomass seasonal changes as the shape 'S'. distribution of root biomass decrasecs as negetive exponential function with depth increasing, the relation of root biomass with aerial biomass follows lelative growth law. The multipe regression equations of aerial biomass increasing with soil moisture, precipitation and cumulative temperature wore established at last.