摘要
本研究从水曲柳落叶松混交林中树木的种内种间竞争机制出发 ,对与距离有关的竞争模型和邻体干扰模型进行了改进 ,提出了以竞争指数分量和竞争效应系数来量化树木间的空间竞争 .根据野外的实测数据 ,以年材积生长量为因变量各竞争指数分量为自变量 ,通过多元回归分析建立了树木个体生长的竞争效应模型 ,回归结果有很好的拟合优度 .本研究为空间竞争模型的进一步改进和生态学研究植物竞争生长关系提供了新的思路 .
Based on distance dependent competition models and neighborhood interference models,the competition index components and competition effect coefficients were used to quantify the spatial competition among trees in the mixed plantation of ash( Fraxinus mandshurica) and larch( Larix gmelini) .Taking each component of competition index as independent variables and the yearly volume growth as dependent variable,the competition growth model was established with good regression result.The study provided a new approach to deal with the further improvement of spatial competition models and the plant competition growth relationship ecological study.
出处
《应用生态学报》
CAS
CSCD
2000年第5期646-650,共5页
Chinese Journal of Applied Ecology
基金
国家"九五"科技攻关项目!(96 0 1 1 0 2 0 1 )
关键词
水曲柳
落叶松
混交林
个体生长
竞争效应模型
Competition, Neighborhood interference model, Fraxinus mandshurica, Larix gmelini, Pure stand, Mixed stand.
