武夷山土壤有效钾垂直分异研究

通过对武夷山六个典型剖面有效钾含量的分析发现：从山顶到山脚随着海拔的逐渐降低,土壤表层有效钾含量呈降低趋势,2号剖面有效钾含量最高,达88 mg/kg,6号剖面有效钾含量最低,只有39 mg/kg,1,2,5号剖面的有效钾含量处于中度缺乏状态;3,4,6号剖面的有效钾含量处于严重缺乏状态.其成因主要是由于本区位于中亚热带南缘,淋溶作用较强,且随着海拔降低,年均温升高,脱硅富铝化作用加强,同时人为影响也对该分布格局产生一定影响.

Study on Soil Potassium Vertical Differentiation in Wuyi Mountain

The analyses of Available K content of the typical six profiles of Wuyi mountain shows that the Available K content in the soil surface tends to lessen as the rise of elevation from the top to the bottom of the mountain. Profile NO. 2 contains the highest content of Available K measuring 88 mg/kg, Profile NO. 6 contains the lowest content of Available K measuring only 39 mg/kg, Profiles NO. 1, NO. 2 and NO. 5 are generally lacking Available K, while Profiles NO. 3, NO. 4 and NO. 6 are under the situation of being in badly need of Available K. The main causes of the situation is that this area is in the Middle subtropics ,where leaching effect is comparatively more active, and as the lowering of elevation and the rising of annual average temperature, the desilisificationallitization will strengthen, at the same time humans affect this pattern of the distribution of Available K as well.