【摘要】 对吉林省东部林区长白山系张广才岭南段西坡针阔混交林、落叶松林、阔叶混交林十几a来采伐林地的土壤理化性质进行了定位及不定位和室内研究分析 .结果表明 ,不同采伐林地土壤养分有明显的差异 .有机质、全氮、水解氮质量分数 :择伐林地及保留带高于皆伐林地 ,针阔混交林、落叶松人工林高于阔叶混交林 ;速效钾质量分数 :皆伐林地高于择伐林地及保留带 ;速效磷质量分数 :针阔混交林变化无规律 ,阔叶混交林、落叶松人工林择伐林地高于皆伐林地 ;pH :针阔混交林、落叶松人工林皆伐林地比择伐林地及保留带高 ,水解酸低 ,阔叶混交林则相反 ;枯落层厚度 :保留带、择伐林地高于皆伐林地 .同一林分 ,随着采伐后时间推移 ,速效磷、速效钾逐渐降低 ;有机质质量分数 :择伐林地和皆伐林地逐年降低 ,皆伐林地比择伐林地降低快些 ,当降低到一定程度后又逐年增加 ;针阔混交林、阔叶混交林 pH逐渐升高 ,水解酸逐渐降低 ,落叶松人工林水解酸逐渐升高 ,pH逐渐降低更多还原

【Abstract】 Soil physicochemical characteristics in different logged areas of the mixed coniferous and broadleaf forest, artificial Dahurian Larch forest and mixed the broadleaf forest which are located in the east of Jilin province were investigated. The results showed that the soil nutrient in the different logged land have obvious differences. Mass fraction of organic matters, full nitrogen, hydrolytic nitrogen in selected cutting forest land and reserved zone are higher than that of clear cutting areas and mixed coniferous and broadleaf forest and the artifical Dahurian Larch forest are higher than those in the mixed broad forest; Mass fraction of the quick potassium of clear cutting area are higher than that of selected cutting areas and the reserved zone; Mass fraction of quick phosphorus have not obvious regular in the mixed coniferous and broadleaf forest and artifical Dahurian Larch forest are higher than clear cutting forest land; pH of mixed coniferous and broadleaf stand, the artifical dahurian larch forest and clear cutting forest land are higher than that the select cutting forest land and the reserved zone; The litter thickness of select cutting areas and reserved zone are higher than that of clear cutting areas. The quick phosphorus and potassium in the same stand reduced gradually with the change of time after cutting; Mass fraction of organic matter decreased gradually in the selected cutting forest land and clear cutting forest land. pH value increased gradually in the mixed coniferous and broadleaf forest and the mixed broadleaf forest, and the hydrolytic acid increased gradually, pH value reduced gradually in the artificial Dahurian Larch forest.更多还原