摘要
为了解山西庞泉沟自然保护区土壤肥力状况,以关帝山林区华北落叶松林内土壤为研究对象,设置临时样地和标准样地,采用土壤农化分析的常规方法对林下土壤pH,含水量、容重、总碳、铵态氮、硝态氮、速效钾、速效磷的含量进行测量和分析。研究结果表明,山西庞泉沟落叶松林地未出现退化现象,为中性偏弱酸性土壤,适宜华北落叶松生长;土壤结构疏松多孔,保水保肥能力较强;试验区土壤总碳、速效磷含量、氮素及速效钾含量均与土壤容重呈正相关关系,跟土层深度呈负相关关系。
In order to understand the soil fertility status in the nature reserve of Pangquangou of Shanxi,temporary sample plot and standard sample plot were set with the soil in Larix principis-rupprechtii Mayr forest of Guandi mountain as research object.The pH,water content,bulk density,total carbon,ammonium nitrogen,nitrate nitrogen,available potassium and available phosphorus of the soil under forest were measured and analyzed using the conventional methods of soil agrochemical analysis.The results showed that the Larix principis-rupprechtii Mayr forest in Pangquangou of Shanxi had no degradation phenomenon,and it was neutral and weak acid soil which was suitable for the growth of Larix principis-rupprechtii Mayr.The soil structure was loose and porous,and the retention capacity of water and fertilizer were strong.The contents of total carbon,available phosphorus,nitrogen and available potassium had positive correlation with soil bulk density,while had negative correlation with soil depth.
作者
李志强
Li Zhiqiang(National Forest Administration Bureau of Guandi Mountain, Wenshui 032104, China)
出处
《山西林业科技》
2020年第2期22-25,54,共5页
Shanxi Forestry Science and Technology
关键词
关帝山
华北落叶松
土壤理化性质
山西庞泉沟
Guandi mountain
Larix principis-rupprechtii Mayr
Soil physical and chemical properties
Pangquangou of Shanxi
