CAJ | 학술논문

以冀北辽河源地区不同林龄油松天然次生林为研究对象，研究其土壤微生物生物量碳、氮质量分数，土壤脲酶、过氧化氢酶、多酚氧化酶以及β－葡萄糖苷酶活性随油松林龄的时间变化趋势。结果表明：在生长季期间，土壤微生物生物量碳、氮质量分数，脲酶、过氧化氢酶和β－葡萄糖苷酶活性从5—8月份逐渐增大，然后逐渐减小，但是多酚氧化酶活性则相反，而且酶活性的衰减程度延迟于微生物生物量碳、氮质量分数的；随着油松天然次生林林龄的增加，土壤微生物量碳、氮质量分数，脲酶、过氧化氢酶和β－葡萄糖苷酶活性逐渐增加，而多酚氧化酶活性则减小。相关性分析表明，土壤微生物生物量碳、氮质量分数与脲酶、过氧化氢酶和β－葡萄糖苷酶活性呈极显著正相关，而与多酚氧化酶活性呈负相关。土壤温度和含水率与各指标之间呈极显著正相关性。
이기북료하원지구불동림령유송천연차생림위연구대상，연구기토양미생물생물량탄、담질량분수，토양뇨매、과양화경매、다분양화매이급β－포도당감매활성수유송림령적시간변화추세。결과표명：재생장계기간，토양미생물생물량탄、담질량분수，뇨매、과양화경매화β－포도당감매활성종5—8월빈축점증대，연후축점감소，단시다분양화매활성칙상반，이차매활성적쇠감정도연지우미생물생물량탄、담질량분수적；수착유송천연차생림림령적증가，토양미생물량탄、담질량분수，뇨매、과양화경매화β－포도당감매활성축점증가，이다분양화매활성칙감소。상관성분석표명，토양미생물생물량탄、담질량분수여뇨매、과양화경매화β－포도당감매활성정겁현저정상관，이여다분양화매활성정부상관。토양온도화함수솔여각지표지간정겁현저정상관성。
We studied the temporal variation tendency of soil microbial biomass carbon ( MBC ) , microbial biomass nitrogen (MBN), activity of urease, catalase, polyphenol oxidase, and β-glucosidase of Pinus tabulaeformis with different ages in Liao River source region.MBC, MBN, urease, catalase and β-glucosidase in soil of all forest age groups increased gradual-ly from May to August, and then decreased until October .However, soil polyphenol oxidase exhibited the opposite trend . The attenuation degree of enzyme activity delayed than that of MBC and MBN .With the increasing age of P.at blu aeformis forest, MBC, MBN, urease, catalase and β-glucosidase increased , while the polyphenol oxidase decreased .By correlation analysis, MBC and MBN had a statistically significantly positive correlation with the activity of urease , catalase and β-glu-cosidase.However, there was negative correlation between MBC/MBN and polyphenol oxidase .Soil temperature and water content had a significantly positive correlation with all indices .MBC, MBN and enzymes activity of soil were the biological indices to evaluate soil quality of different age groups in P.tabulaeof rmis forest.