Using system analysis methods, the ecosystem of the Chinese pine--Chinese pine caterpillar (Dendrolimus tabulaformis) was studied and the three dynamics submodels. Chinese pine submodel, Chinese pine caterpillar sub- modle and the damaging submodel of Chinese pine caterpillar were made. For the Chinese pine sasubmodel, the needle leaved weight sub-submodel and dynamic sub-submodels of height growth, diameter growth and wood volume growth were built. For the Chinese pine caterpillar submodel, the ARMQ (p,q) ...