摘要
应用分形理论分析了广西英罗港红树林区小榄Bruguiera gymnorrhiza群落土壤粒径分布的分形特征。基于土壤粒径-重量分布资料计算,土壤粒径分布分形维数介于2.78-2.90之间。分形维数的大小与土壤中的细粘粒、盐分和有机质的含量呈显著正相关,与砂粒的含量呈显著负相关。不同质地的土壤,其粒径分布的分形维数呈现砂壤<轻粘土<中粘土的变化。土壤的质地类型、含盐量、有机质含量等是决定土壤粒径分布分形维数的主要因子。
The fractal characteristics of soil particle-size distributions of Bruguiera gym-norrhiza community in the mangrove area of Yingluo Bay, Guangxi Province were studied. The calculation based on the soil particle-size and weight distribution data showed that the fractal dimension values for soil particle-size distributions were between 2. 78 and 2. 90. These fractal values were significantly positively related to the contents of fine clay particles, salts and organic matter, but negatively to the content of sandy particles. The fractal dimensions of particle-size distributions of different textural soils varied in the order from low to high of sandy loam, light clay, medium clay. Texture type, salt content, organic matter content, etc. are the major factors determining the fractal dimension of soil particle-size distribution.
出处
《热带海洋学报》
CAS
CSCD
北大核心
2003年第1期17-22,共6页
Journal of Tropical Oceanography
基金
国家自然科学基金重大项目(39899370)
国家自然科学基金项目(39860023)
关键词
广西
红树林
木榄群落
土壤粒径分布
分形维数
有机质
持水量
mangroves
Bruguiera gyrnnorrhiza community
soil particle-size distribution
fractal dimension
