摘要
动物种群数量动态研究是种群生态学研究的主要对象之一.借用Leslei矩阵建立数学模型对分布在新疆北部干旱环境中的褐家鼠种群数量动态进行了预测.同时经计算得新疆北部干旱环境中褐家鼠种群的特征根(λ),及其对应的特征向量(ns).结果表明,12年后雌体总数达到29801.68628,同时根据褐家鼠种群增长曲线,发现该种群的增长属于稳定型的指数增长类型.
Study animal population dynamics is one of the main research object of the population ecology.Leslei matrix is one kind of mathematical model advanced by Leslie (1945) and widely used population dynamics research in recent year.Leslei Matrices and life table materials were used to forecast and calculate population dynamics of the Rattus norvegicus in northern Xinjiang arid environment.At the same time The latent root (λ)and its corresponding eigenvector(ns) have been calculated.The result showed that after 12 years,population numbers of female Rattus norvegicus will reach 29?801.686?28.The population increasing curve of Rattus norvegicus shows that it belongs to the stable increasing population.
出处
《生命科学研究》
CAS
CSCD
2003年第2期172-176,共5页
Life Science Research
基金
新疆大学青年教师科研启动项目(2001 2003)
关键词
干旱环境
褐家鼠
种群数量
变动规律
Rattus norvegicus
Leslei matrices
stable age distribution
