生物量-N 与酸解的氨基酸态氮及未知态氮都有显著相关性。
The amount of soil biomass-N was markedly increased by the application of fertilizers.
且土壤有机质、全氮、酸水解性总氮、氨基酸态氮和碱解氮含量按照石漠化程度的由轻度到极强度而呈递减趋势，但土壤其他氮素含量并未表现相同的变异规律。
Compared with Karst no-Rocky Desertification soil, the content of soil Organic Matter and Nitrogen in various degrees of Karst Rocky Desertification shows a tendency to drop suddenly.
非酸解性氮占全氮比例的变化趋势与酸水解态氮的变化趋势相反；
The concentrations of unhydrolysable nitrogen changed in the opposite direction from the hydrolysable nitrogen.
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