CAJ | 학술논문

以内蒙古大兴安岭北部林区的火烧迹地为研究区，对不同火烧年份（2003年和2012年）和不同火烧程度（轻度和重度）火烧迹地土壤化学性质进行研究。结果表明：火烧后1年，相较于对照样地，轻度火烧后，土壤有机碳和速效磷含量显著增加，pH 值、全磷、碱解氮含量增加，但差异不显著；土壤全氮含量显著降低，全钾和速效钾含量降低，但差异性不显著。重度火烧后，pH 值、碱解氮和速效磷含量显著增加，有机碳、全氮和速效钾含量显著降低，全磷和全钾含量降低，但差异不显著。火烧后10年，相较于对照样地，除重度火烧后土壤有机碳和全氮含量显著降低，其他土壤化学性质指标火烧后也不同程度降低，但不显著。
이내몽고대흥안령북부림구적화소적지위연구구，대불동화소년빈（2003년화2012년）화불동화소정도（경도화중도）화소적지토양화학성질진행연구。결과표명：화소후1년，상교우대조양지，경도화소후，토양유궤탄화속효린함량현저증가，pH 치、전린、감해담함량증가，단차이불현저；토양전담함량현저강저，전갑화속효갑함량강저，단차이성불현저。중도화소후，pH 치、감해담화속효린함량현저증가，유궤탄、전담화속효갑함량현저강저，전린화전갑함량강저，단차이불현저。화소후10년，상교우대조양지，제중도화소후토양유궤탄화전담함량현저강저，기타토양화학성질지표화소후야불동정도강저，단불현저。
Taking the burnt area in the northern forest area in Inner Mongolia Greater Khingan Range as the study area,soil chemical properties of the different fire years (2003 and 2012)and fire severity (mild and severe)as the study objects.The results show that in 1 year after the fire,compared with the control sample plots and mild fire severity,organic carbon and available phosphorus content in soil increased sig-nificantly,pH value,total phosphorus,available nitrogen content increased,but the difference was not sig-nificant;soil total nitrogen content decreased significantly,the total potassium and available potassium content decreased too,but the difference is not significant.After severe burn,pH value,available nitrogen and available phosphorus content increased significantly,organic carbon,total nitrogen and available po-tassium content reduced significantly,the total phosphorus and total potassium content reduced,but the difference was not significant.In 10 years after the fire,compared to the control plots,only organic carbon and total nitrogen content in severe burned area decreased significantly,other indicators of soil chemical properties also decreased,but not significantly.