Soil study on Cunninghamia lanceolata plantations of 6,13 and 18 years old in Pingbian county of Yunnan province were conducted to learn the effect of C lanceolata plantation on soil physical and chemical properties .
对云南屏边6、13及18年生杉木人工林林地土壤理化性质的调查分析结果表明：种植杉木后，林地土壤含水量增加，容重降低，紧实度减小，土壤物理性状有改善的趋势；
Pingbian