Establishment of the Dynamic Model and Nutrient Accumulation of Chestnut‘s Fruits and Seeds During the Growth Period Application of GIS and integrated mathematic models on estimating forest land wood productiveness and solar energy use efficiency Mapping of variable rate fertilizing and model of fertilizer application in paddy field The classification method of interaction in combined pollution system Optimal Theory of Bending Wood Recovery Ratio with Analytical Mathematic Model Allelopathic inhibition and mathematical models of Chara vulgaris extracts on two freshwater algae species Effects of the loss of squares and bolls on the production of cotton (Gossypiu m hirsutum L.) during the fruiting: manual simulation of damage Research advance in simulation and visualization of forest fire spreading via computer Discriminant Analysis of Annual net Production in Alpine Meadow to Meteorological Condition