头花蓼4个野外居群生物量及分枝格局研究

Study on Biomass and Branching Pattern of Four Field Populations of Polygonum capitatum Buch.-Ham.ex D.Don

对重庆缙云山向阳砂岩陡坡、黄壤土、岩石表面腐殖质土、黄色沙壤4个野外居群的头花蓼植株的生物量、生长形态等进行测定。结果表明,不同居群的头花蓼植株的生物量与生物量组成均有所差异。其中,向阳砂岩陡坡的茎和根状茎的相对生物量最大,黄壤土生境下头花蓼生物量最大,岩石表面腐殖质土居群的根、不定根生物量最大,黄色沙壤居群的总生物量最小。同时分析了各居群的头花蓼植株的生物量在不同器官的相对投入差异和同一居群相同器官在各个枝级的相对生物量投入的差异,并研究了不同居群头花蓼植株的生长特征。

The characteristics of Polygonum capitatum Buch.-Ham.ex D.Don collected from 4 field populations of Jinyun Mountain in Chongqing were studied,respectively from the sunny slopes of sandstone,yellow loam,rocky surface humus soil and yellow sandy soil habitats.And its characters,including biomass,branching pattern were investigated.The results showed that plant biomass and biomass composition of Polygonum capitatum Buch.-Ham.ex D.Don of different populations were different.The differences of biomass investment among populations were also analyzed and discussed combined with branching pattern.And their growth characteristics were simultaneously researched.