通过对银杉主要群落种群的数量统计和年龄组成的分析，编绘了银杉种群的特定时间生命表、存活曲线和年龄结构图。
The time specific life table, survivorship curve and age structure of Cathaya argyrophylla population were obtained through analysing the demography and age structures of its main coenopopulations.
报道了宁波沿海珠带拟蟹守螺种群的年龄组成与生长情况 。
The age composition and growth of Cerithidea cingulatus in Ningbo Coast are reported.
应用推荐