草地学报

›› 1995, Vol. 3 ›› Issue (1): 57-64.DOI: 10.11733/j.issn.1007-0435.1995.01.009

• 研究论文 • 上一篇    下一篇

羊草草原群落初级生产力动态研究

白永飞, 许志信   

  1. 内蒙古农牧学院草原科学系, 呼和浩特010018
  • 出版日期:1995-02-15 发布日期:2012-07-11

Studies on Dynamics of Primary Production for Leymus Chinensis Steppe Community

Bai Yongfei, Xu Zhixin   

  1. Department of Grassland Science, Inner Mongolia college of Agriculture and Animal Husbandry, Huhhot, 010018
  • Online:1995-02-15 Published:2012-07-11

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摘要： 在锡林郭勒盟南部羊草草原对群落初级生产力动态进行11年的定位研究,结果表明:群落地上生物量有着显著的波动,在11年中遇丰年3个、平年7个、欠年1个。群落地上生物量季节积累动态符合Compertz曲线Bt＝Bmax·e-ea-kt,其高峰值出现在返青后的125.2～162.7天。制约群落地上生物量波动的限制因素是水分条件。建立了群落地上生物量与水热因子关系的数学模型。根据这些规律作者对畜牧业生产提出了合理建议。

关键词: 羊草草原, 群落, 地上生物量, 降水量

Abstract: Dynamics of Leymus chlviensis steppe community primary production were studied in southern Xilinguole Steppe region during eleven years from 1983 to 1993.Results showed that fluctuations of the community above-ground biomass were remarkable.During eleven years there were three bumper harvest years,seven average years, and one shortfall year.Seasonal increasing curves of the community above - ground biomass conformed to Compertz curves, Bt = Bmax·e-ea-kt.The peakvalues came 125.2 to 162.7 days after herbage turnning green.The main factor that affects fluctuations of the cornmunity above-ground biomass is precipitation.Mathematical models of the relationship between the community above-ground biomass and the accumulated precipitation and cumulative temperature were founded- Some rational suggestions on animal production according to the comrnunity primary production were put forward.

Key words: Leymus chinensis steppe, Community, Above-ground biomass, Precipitation