关键词: 化学防治, 马尾松纯林, 动物, 虫生真菌群落, 时空动态格局, 主成分分析, 生态过程, 空间大小, 空间方向, 空间连通性, 营养级联效应, 空间布局, 空间形状

Abstract: Investigations on animal and entomogenous fungus in pure Masson pine stands show that the species numbers of phytophagous, predatory, parasitic and spider groups are 51, 12, 7 and 26%, respectively. The ratio of beneficial to harmful organism individuals is about 1∶10. Within 2 similar stands or layers, the family and species numbers are equal to or close to each other. Their dominant orders are similar. The fluctuations of species or individual numbers of phytophagcus, predatory, parasitic and spider groups are almost the same within the stands and layers. Principal component analysis indicates that in1 anniversary year, the community is in a state of circulating succession of "preparing overwintering inlate autumn→hibernation→resuscitation in early spring→flourishing during spring, summer and early autumn". The stability and the self adjusting potential of the community are quite strong.

Key words: Chemical control, Pure Masson pine stand, Community, Animals, Entomogenous fungi, Temporal and spatial dynamic pattern, Principal components analysis, spatial size, spatial shape, spatial distribution, trophic interaction, ecological process, spatial connectivity, spatial orientation