Soil Environment’s Impact on Tree Vitality by Season in Urban Park and Open Space

The research illuminated the relationship between soil environment and tree vitality within urban green park areas and analyzed the soil environment’s impact on tree vitality in each space, designating soil hardness, soil moisture degree, soil PH, K, Na, Ma, Ca quantity as independent factors after performing Pearson relation analysis. Multiple return analysis was practiced in using the analysis data. The findings were as following. As the result of Pearson correlation analysis among the variants, the meaningful variants at significance probability of 5% were shown as tree vitality, soil hardness, K, Na, Mg and Ca. While the correlation figure of 0.415 of tree vitality and Mg was measured as the highest, that of K and Mg of -0.235 was measured lowest. As the result of multiple return analysis to analyze the soil environment’s impact on tree vitality by season, the soil environment of Spring was measured as pH, soil hardness, that of Summer did not impact on the plant growth, that of Autumn was measured as soil hardness, and that of Winter was measured as soil hardness, Mg, pH, Ca in order. Therefore soil hardness was proved to have an impact on all the seasons but Summer.