湖北后河国家级自然保护区水丝梨种群结构

对湖北后河国家级自然保护区的水丝梨（Ｓｙｃｏｐｓｉｓ ｓｉｎｅｎｓｉｓ Ｏｌｉｖｅｒ）种群结构和数量动态进行研究。水丝梨种群大小、高度级结构研究表明，幼苗、幼树数量严重不足， 中成树成高频分布，个体之间竞争激烈，整个种群表现为一不稳定的成熟类型。幼苗、幼树的低频分布将是影响种群稳定的限制性因素。对水丝梨种群的保护作者也进行了讨论。

Population structure of Sycopsis sinensis in Houhe National Nature Reserve, Hubei Province

On the research of the size class and height class of Sycopsis sinensis population in Hoube National Nature Reserve, the largest Sycopsis sinensis population in China this paper points out that the seedlings and saplings are scarce in amount; adults are distributed with high frequency; competition among individuals is intense; and the population is in an unstable situation. It also expounds that the scarcity of the seedlings and saplings would become a restrictive factor affecting the stability of Sycopsis sinensis population. And it makes constructive suggestions about protection and regeneration of Sycopsis sinensis population.