摘要
采用大样本取样和统计分析的方法 ,从种群水平上研究了天然寸草苔营养分株与生殖分株生长的可塑性。在籽实乳熟末期 ,寸草苔种群营养分株的高度为 14.54± 3.81cm ,重量为0 .0 177± 0 .0 0 85g ;生殖分株的高度为 18.84± 3.2 0cm ,重量为 0 .0 2 4 1± 0 .0 0 75g。种群中两种分株的重量与其高度的数量变化均符合正态分布规律 ,营养分株生长的生态可塑性比生殖分株大。两种分株的重量均随其高度的增加呈幂函数形式增加。
By large sampling and statistical analysis, the growing plasticity of the vegetative ramets and the reproductive ramets of the natural Carex duriuscula population were studied on the population level in Nanhu park of Changchun. At the final stage of seed ripening, the height of the vegetative ramets was 14.54±3.81cm, and the weight was 0.0177±0.0085g. The height of the reproductive ramets was 18.84±3.20cm and the weight was 0.0241±0.0075g. The quantitative changes of the height and the weight accorded with the rule of the normal distribution, and the growing plasticity was bigger in vegetative ramets than in reproductive ramets. The weight of ramets was a power function growth along with the height increase in the two kinds of ramets.
出处
《中国草地》
CSCD
2001年第4期6-10,共5页
Grassland of China
基金
国家自然科学基金项目 (30 0 70 137
39770 5 36 )资助
关键词
寸草苔
种群
营养分株
生殖分株
生长可塑性
草坪草
Carex duriuscula
\ Population
\ Vegetative ramet
\ Reproductive ramet
\ Growing plasticity
