祁连山东段哈溪林区不同海拔高度青海云杉林土壤全磷和全钾分布特征

摘要

选取祁连山东段哈溪林区青海云杉林土壤为研究对象,研究和分析了不同海拔高度青海云杉林土壤全磷和全钾的分布特征。结果表明：全磷含量随海拔高度降低而增加,同一海拔高度下,不同土层全磷含量变化不大,3016 m 和2786 m 海拔处随土层加深略有下降,2536 m 海拔处增加；全钾含量亦随海拔高度降低而增加,同一海拔高度下,不同土层全钾含量变化不明显,与全磷不同的是,3016 m 海拔处随土层加深先减小后增大,2786 m 和2536 m 海拔处一直增大。%Soil of Picea crassifolia plantation in east segment of Qilian Mountains was selected as the research ob-ject.Distribution characteristics of total phosphorus and total potassium for soil in Picea crassifolia plantation under different altitudes were analyzed.Result shows that the content of total phosphorus increases with the decrease of al-titude;under the same altitude,the content of total phosphorus for soil with different layers changed little,3 01 6 m and 2 786 m altitude fell slightly with the deepen of soil layer,to 2 536 m altitude increased.Total potassium con-tent also increases with the decrease of the altitude,under the same altitude,total potassium content within differ-ent soil layers changed little,and the difference is that with the total phosphorus,the total potassium content at 3 01 6 m altitude decreased firstly and then increased with the deepen of the soil layer,the total potassium content at 2 786 m and 2 536 m altitude has been increased.