中国东北样带羊草群落植物水分生态类型功能群生物量变化研究杨利民.pdf

DOI :10.13327/j.j jlau.2005.05.011 吉林农业大学学报　2005, 27 (5):514 ～518 Journal of J ilin Agricultural University 杨利民, 韩　梅, 林红梅 (吉林农业大学吉林省生态恢复与生态系统管理重点实验室, 长春130118) 　:初步分析了中国 北样带以羊草(Leymus chinensis)为建群种或共建种的草原群落植物水分生态类型 功能群生物量及其与群落初级生产力和环境变化的关系。结果表明:中旱生植物对群落初级生产力起主要 决定作用, 其次是旱中生植物和旱生植物, 中生植物在羊草杂类草草甸群落中作用较大, 而湿生植物只是 个 别类型的偶见种。中旱生植物和旱生植物生物量的变异系数较低, 分别为0.54和0.72, 具有较高的稳定性。 :中国 北样带;羊草群落;生态类型功能群;生物量;环境变化 :Q948.112.3　　　:A　　　:1000-5684(2005)05-0514-05 Study on Biomass Changes of Plant Ecological Type Groups in the Leymus chinensis Communities along Northeast China Transect YANG Li-min, HAN Mei, LIN Hong-mei (Key Laboratory f or Ecological Restoration and Ecosystem Management of J ilin Province, J ilin Agricultur - al University , Changchun 130118, China ) Abstract:Plant fun tion types are basi unit in studying vegetation hanges and e osystem fun tion of biodiversity.By now, there has not been a widely a epted lass of plant fun tion types.We analyzed the relations of plant e ologi al type groups and ommunity biomass and environment hanges in the grassland ommunities of Leymus chinensis as edifi ator along Northeast China Transe t (NECT ).The results showed that the primary produ tivity of Leymus chinensis ommunities was de ided first by Xero-meso- phytes, and next by Meso-xerophytes and Xerophytes.Mesophytes played an important role only in Ley - mus chinensis and herbage ommunity.Hygrophytes appeared in several ommunities.The varian e oeffi- ients of Xero-mesophytes and Xerophytes were lower than those of other e ologi al type groups, therefore the stability of Xero-mesophytes and Xerophytes biomass was higher. Key words:Northeast China Transe t;Leymus chinensis ommunity