落叶松叶峰实验种群生命表  

Life Table of Experimental Population of Larch Sawfly

作　　者：李孟楼[1] 吴定坤[2] 

机构地区：[1]西北林学院森林资源保护系 [2]西北林学院火地塘教学实验林场,陕西711600

出　　处：《西北林学院学报》1992年第4期83-87,共5页Journal of Northwest Forestry University

摘　　要：在15±1℃实验条件下研究了落叶松叶蜂种群发育、存活和繁殖的动态,得出了年龄特征存活率等数据,编制了生命表,并计算出了各项参数:内禀增长力r_m=0.04914,净增殖率R_0=9.9881,增殖有限速率λ=1.0504/d,平均世代周期长T=46.7924d,瞬时出生率和死亡率b=0.2350、d=0.1859。稳定年龄组配成虫前期98.5529％,成虫期1.4599％。Compiles life table of experimental population of larch sawfly(Pris-tiphora erichsonii ( Hartig ) based on research of its development, survival and reproductive dynamics at 15±1℃. The following parameters have been obtained, innate increasing capacity ( rm= 0.04914 ), net reproductive rate ( R0 = 9.9881 ) finite increasing rate ( A = 1.0504/d), average generation period ( T = 46.7924d ) , instant hatch and death rates ( b = 0.2350, and d = 0.1859) . Stable age distribution showed that 98.5529% of the population is in pre-apult stage, and 1.45599% is inadult stage.

关 键 词：落叶松叶蜂 实验种群 生命表 

分 类 号：S763.430.1[农业科学—森林保护学]