论文部分内容阅读
本文对吉林市郊半山区松花湖水源涵养,所捕的5种林地鼠,在时间和空间维度上的生态位宽度及生态位重叠值进行定量估计,评价它们在林地中的竞争共存机制,并采用模糊聚类方法,从生态位角度探讨了林地鼠类的群落结构。一、材料与方法: 1.样地设置:1987年5月至1988年11月,在本单位松花湖实验站赤松人工幼林、天然次生阔叶林、落叶松人工林和榛楷灌丛4块样地,采用夹日线法,每月进行一次捕鼠调查;在丰满五佳山(海拔877m)西南坡每升高100m设一布夹线捕鼠。
In this paper, we quantitatively estimated the niche breadth and niche overlap of five species of woodland hamster in Songhua Lake, a suburb of Jilin Province, in terms of water and water conservation, and evaluated their competition and coexistence mechanisms in forest land. Fuzzy clustering method, from the niche point of view to discuss the community structure of woodland rodents. I. MATERIALS AND METHODS 1. Site setting: From May 1987 to November 1988, 4 samples of Pinus densiflora plantation, natural secondary broad-leaved forest, larch plantation and hazelnut shrub Ground, using daily folder method, once a month to conduct a mouse-trapping survey; in plump Five Mountains (elevation 877m) on the southwestern slope for each increase of 100m set a cloth caught rat trap.