the microbial biomass, soil enzyme activities and the degradation rate of las in 4 kinds of soils from xuzhou region were studied under simulated conditions by using orthogonal design.
用正交实验方法研究了徐州地区4种土壤在不同组合条件下土壤微生物数量、酶活性及las的降解条件。
the biolocial population and distribution of benthic macro-invertebrates in xuzhou region of jinghang great canal have been ascertained bybioassay method.
本研究利用生物监测方法,探明了京杭运河徐州段大型底栖无脊椎动物的生物种群及其分布。
natural drought evaluating equations are suggested for xuzhou region by use of the palmer drought mode.
利用帕尔默旱度模式的基本原理,提出了徐州市自然旱度评估方程。