闽南花岗岩风化壳发育区土壤粒径特征分析

Distribution of soil particles size on the granite weathered crust in South Fujian

分析了闽南典型的花岗岩风化壳地区土壤粒径分布特征及其成因，发现土壤粒径分布特征表现为垂直方向上由地表向地下逐渐变粗、水平方向上由低缓坡脚向陡峻山顶逐渐变粗等特点，而这种分布特征与海拔、坡度、地表覆盖以及人为开发等因素存在密切关系．最后对合理开发利用研究区域土地，促进土壤结构优化，改善生态环境等方面进行了探讨，提出了选择合理的种植模式，结合科学的工程技术方法，增施有机肥等建议．

Analyzed the soil particles size distribution characteristics and its cause on the granite weathered ernst in South Fujian. The results shown that the deeper to the earth, the bigger the soil particles were, and the soil particles became bigger with the surface became higher and steeper, style of cultivation and plants had close relation with the soil particles size at the same time. Finally, presented suggestion that reasonable use pattern and project, organic fertilizer must be taken to improve the soil structure and make the environment better.