贵州苏铁野生居群径级构件与种群动态

Size-class Structure and Population Dynamics of Wild Cycas guizhouensis

研究贵州苏铁野生居群的种群构件特性,通过数学推理种群构建因子球茎直径、叶片数量和球茎高度以及根系之间的相互关系,结果认为,从种群径级构件分析,自然状况下贵州苏铁老、中、青年龄结构合理,自然状态下种群能够实现物种的健康延续发展.采用最小二乘法拟合种群构件之间的关系,有助于在野外及时准确地认识贵州苏铁的个体特性及其栽培种植管护.

This paper studied the characters of wild Cycas guizhouensis populations on size-class structure and by using mathematical reasoning to construct the relationships among population factors on bulbs diameter,leaf number and roots.The results showed the wild population of Cycas guizhouensis have a optimal age structure,which could achieve the health and continued development.In addition,mathematical model established on the relationship between population structure by least square fitting can accurate understanding of the individual characteristics timely,which has played an active role in guiding management and protection of Cycas guizhouensis planting.