CAJ | 학술논문

对大岗山天然常绿阔叶次生林中25个样地0～20cm和20～40cm土层土壤养分进行了测定分析.结果显示:(1)大岗山常绿阔叶林土壤养分含量丰富,但钾素养分比较贫乏;(2)不同林分土壤有机质、全氮、全钾、有效磷含量差异不大,但对全磷及有效钾含量差异显著,均为针阔混交林>常绿阔叶林>常绿落叶阔叶混交林>毛竹林;(3)就同一林分类型而言,土壤有机质、全氮、速效磷及有效钾含量随着土壤深度的增加显著递减;全磷含量随着土壤深度的增加呈递减的趋势,但减小不明显;全钾含量在不同土层间变化规律不明显,半落叶阔叶林、针阔混交林全钾含量随土层深度的增加而增加,毛竹林土壤全钾含量随土层深度的增加明显降低.
대대강산천연상록활협차생림중25개양지0～20cm화20～40cm토층토양양분진행료측정분석.결과현시:(1)대강산상록활협림토양양분함량봉부,단갑소양분비교빈핍;(2)불동림분토양유궤질、전담、전갑、유효린함량차이불대,단대전린급유효갑함량차이현저,균위침활혼교림>상록활협림>상록락협활협혼교림>모죽림;(3)취동일림분류형이언,토양유궤질、전담、속효린급유효갑함량수착토양심도적증가현저체감;전린함량수착토양심도적증가정체감적추세,단감소불명현;전갑함량재불동토층간변화규률불명현,반락협활협림、침활혼교림전갑함량수토층심도적증가이증가,모죽림토양전갑함량수토층심도적증가명현강저.
The soil nutrients of 0-20cm and 20-40cm soil layers of 25 plots in Dagangshan natural evergreen broad-leaved forest were measured and analysed.The result shows that:(1)Dagangshan evergreen broad-leaved forest soil is rich in nutrients,but relatively poor in potassium nutrition.(2)In different forest types there are no signficant differences in the soil organic matter,total nitrogen,total potassium,rapidly available phosphorus content,but there are significant differences in the total phosphorus and available potassium contents.The order of the soil total phosphorus contents of 4 kinds of forest types is: mixed conifer> evergreen broad-leaved forest> mixed forest of deciduous broad-leaved evergreen>phyllostachys pubescens. (3)Different soil depths in the same forest type have a significant impact on soil organic matter,total nitrogen,available phosphorus,available potassium content,which decease with soi1 depths.However,there is no apparent changing regularity of total potassium content in different soil strata.