长白山北坡针叶林下土壤淋洗液及土壤性质的初步研究

为了研究长白山针叶林下土壤淋洗液及土壤性质，我们于1987年6-9月，在长白山北坡暗针叶林带各个标准地进行定位研究。在红松云冷杉林、岳桦云冷杉林标准地，收集了大气降水、林内降水及土壤的淋洗液，均进行化学分析。结果表明：（1）在红松云冷杉林标准地，其大气降水经过林冠后都稍有酸化作用；（2）在红松云冷杉和岳桦云冷杉标准地，其0层的淋洗液酸度大，有机酸含量高，Fe和A1均从A1层淋洗下来，并在其下的淀积层（B）淀积，0 A1层养分淋失量（公斤/公倾/年）为：钾1.2-1.6,钙2.2-4.6，镁0.5-0.9，有机碳35.4-43.9，全氮0.6-0.7；（3）土壤分析结果表明：长白山北坡暗针叶林带土壤，具有不同程度的灰化过程，其中杜香落叶松林下土壤具有明显的灰化淀积层，在分类上可属灰土。

PRELIMINARY STUDY ON CHEMISTRY OF LEACHEATE AND SOILS UNDER CONIFEROUS FOREST ON NORTHERN SLOPE OF CHANGBAI MOUNTAINS

In order to study the chemistry of leacheate ,and soils under coniferous forest, the samples of precipitation, throughfall and soil leacheate under coniferous forest on the northern slope of the Changbai Mountain were collected and analysed The sample plot studied is situated in the natural reserve on the northern slope of the Changbai Mountains Antu County, Jilin Province, being 1100-1700 m above sea level and a basult plateau covered with volcanic ash and sand in the surface. The mean annual.