浙江省玄武岩母质发育的土壤的地球化学特征及其资源生态学意义

Geochemical characteristics of basaltic sol in Zhejiang province and its significance in resource ecology.

研究结果表明,发育于玄武岩母质的土壤具独特的地球化学优势,其生态系统能量转换率为其它母质发育的土壤的1.39—3.46倍,钾素供应和土壤结构并非尤其不良,是一种被长期忽视的重要土壤资源。但是,不同地球化学演化阶段形成的土壤,能量转换率相差可达77.86％,其中弱富铁铝化土壤具更大的开发利用潜力。土壤氧化铁富集与转化特征,由不同地质层位和不同玄武岩类型导致的土壤地球化学变异,对多种农业生态学过程有特殊影响。因此认为,从地球化学角度研究土壤资源生态学可望是有效的途径之一。

Soil developed on basalt has its distinctive geochemical superiorities: the energy transforming rate (ETR) of its ecosystem could be 1.39—3.46 times higher than that of soils from other parent materials, and its structure and K-supplying are not so bad, being an important soil resource not been paid attention to for Jong time. But, for soils formed under different geochemical developmental stages, the difference of their ETR could be 77.86%.Among these soils, weakly ferrallitic one has greater potentiality for exploitation and utilization. The enrichment of Fe_2O_3 and its transformation characteristics in soil and the soil geochemical variations induced by various positions of geological stratums and various types of basalts give a significant influence on agro-ecological processes. Therefore, it is considered that geochemical study is an effective way for the studies of resource ecology.