摘要
以永平县宝台山森林公园常绿阔叶林4种不同群落类型为研究对象,分析其0～20、20～40cm土层土壤有机质及氮、磷、钾含量变化.结果表明：研究区自然植被下土壤养分含量总体丰富,并为中等变异,只有有效P为强变异;0～20、20～ 40 cm土层不同群落类型间有机质含量无显著差异,0～20 cm土层土壤有机质含量明显高于20～40 cm土层;土壤全氮及碱解氮含量0～20、20～40cm土层差异均不显著;全P含量变化趋势与土壤有机质一致,0～20 cm土层有效P含量高于20～40 cm;全K含量随土层深度增加呈增加趋势,但变化不大,而土壤速效K含量与全K含量变化方向相反;7个指标中只有全N、碱解N、全P和有效P与土壤有机质呈显著相关.
Five different communities of evergreen broad-leaved forests in Baotaishan Forest Park of Yongping County were studied by analyzing the variation of organic matter and N,P,K contents in 0-20 cm and 20-40 cm soil layers in different communities.The results showed that the soil nutrient content was generally high under the natural vegetation in the study area,with medium variation,and only the available P content varied strongly.There were significant differences in organic matter content in 0-20 cm soil layer among stands of Vaccinium bracteatum,Castanopsis orthacantha,Quercus castanopsis and Lithocarpus glaber（P 〈 0.05）,and the organic matter content in 0-20cm soil layer was significantly higher than that of in the 20-40 cm soil layer.There was no significant difference in total N and available N contents between the 0-20 cm and 20-40 cm soil layer.The variation trend of total P content agreed with that of the organic matter,the available P in the 0-20 cm layer was higher than that of in the 20-40 cm layer.The total K content increased with the soil depth,but there was just a little change.On the contrary to total K,the available K decreased along with the increase of soil depth.Among the 7 indices,only total N and available N contents were significantly correlated with soil organic matter content,indicating that P and K of the soil were not primarily derived from soil organic matter,which might be mainly derived from the maternal material of the soil.
出处
《西南林业大学学报（自然科学）》
CAS
2013年第5期59-63,共5页
Journal of Southwest Forestry University：Natural Sciences
基金
国家科技部科技基础性专项项目(2008FY110300)资助
关键词
常绿阔叶林
土壤养分
宝台山森林公园
evergreen broad-leaved forest
soil nutrient
Baotaishan Forest Park
