【摘要】 通过喷施NH4.NO3而建立一个人工模拟氮沉降浓度梯度的方法,研究了在不同氮沉降浓度梯度下,土壤甲螨在垂直分布和水平分布上的数量变化.结果表明,土壤甲螨在低氮沉降下趋向表层,而在高氮沉降下则趋向深层分布.更多还原

【Abstract】 In this paper,we studied the quantitative change of soil oribatid in the vertical distributing and horizontal distributing at different grads of nitrogen（N） deposition and establish a method of simulation nitrogen deposition grads artificially by means of spreading NH₄·NO₃.It our conclusion,the soil oribatid are tended to surface layer with depressed nitrogen deposition whereas deep-seated layer with elevated nitrogen deposition.更多还原