呼伦贝尔四个主要草地类型植物量动态的研究  

STUDY OF THE BIOMASS DYNAMICS OF THE FOUR MAIN RANGELAND TYPES IN HULUNBER

作　　者：杨殿林[1] 张明[1] 格日勒 胡其图 

机构地区：[1]内蒙古鄂温克旗草原工作站

出　　处：《草业科学》1994年第3期12-16,共5页Pratacultural Science

摘　　要：１９８２～１９９２年对呼伦贝尔草地的羊草草甸草原，脚苔草山地旱甸，贝加尔针茅草甸草原和羊草于草原四个草地类型群落植物量动态作了定位监测，结果表明：他上植物量累积动态均符合Ｌｏｇｉｓｔｉｃ曲线，衰减动态符合ｙ＝ａ＋ｂ／ｘ模式，产量高峰出现在８月中旬，６～７月是草群地上植物量累积的盛期；水热是制约草地初级生产力的主导环境因子，草群粗蛋白质、粗纤维含量与生长时间密切相关。The community biomass of Leywus chinensis meadow steppe,Carex pediformis mosey meadow,Stipabaicalensis meadow steppe and leymus chinensis typical steppe four grassland types in Hulunber rangelands waslocation measured in 1982～1992.The result showed that the accumulating dynamics of abovegroundbiomass in the four steppe types was in accord with Logistic cu rves,the declining dynamics was consistentwith the model of Y=A + B/X,the yield peak appeared in the middle of August and the vigorousaccumulation time of aboveground biomass appeared in June ～ July,The major environrnental factor of theprimary productivity was limited by water a nd temperature. The contents of crude protein and crude fiberare closely related to the growing times.

关 键 词：呼伦贝尔 植物量 草地 类型 

分 类 号：S812.3[农业科学—草业科学]