<正>采用Quick Bird-2卫星图像分析了徐州市区公园绿地的景观结构和格局。结果表明：徐州市区公园绿地景观类型结构与布局不尽合理，斑块聚集度高、分维数低，不同区之间的公园绿地景观结构特征差异明显。应根据合理服务半径均匀布局的原则建设公园绿地，增加景观分布均匀度，丰富绿地景观多样性。

The methods of microorganism cultivation and the experimental method of soil microorganism biochemistry activity and enzyme activity are used to determine the three types of microorganisms quantities and microorganism biochemistry activity and the enzyme activity. All the indexes of the second generation in the soil microorganism quantity, biomass, biochemistry activity and the change of soil enzyme activity of P. massoniana under the same condition are higher than those of the first generation.