山西太岳山好地方典型植被类型土壤理化特征  

Soil physicochemical properties of typical vegetation types in Haodifang,Taiyue Mountain of Shanxi

作　　者：纪文婧 程小琴[1] 韩海荣[1] 康峰峰[1] 桂志宏 朱江[1] 王甜[1] 周文嵩[1] 赵敬[1] 

机构地区：[1]北京林业大学省部共建森林培育与保护教育部重点实验室,北京100083 [2]山西省太岳山国有林管理局好地方林场,山西沁源046505

出　　处：《生态学杂志》2016年第1期141-148,共8页Chinese Journal of Ecology

基　　金：林业公益性行业科研专项(201404213)资助

摘　　要：以山西太岳山好地方林场4种植被类型（草甸、灌丛、华北落叶松人工林、华北落叶松-白桦混交林）0-60 cm土层土壤为研究对象,采取野外定点取样和实验室分析的方法,研究不同植被类型土壤理化性质特征。结果表明：土壤容重和p H值随土层深度的增加而增加;土壤含水量随土层深度增加而减小;不同植被类型间,土壤含水量大小排序为华北落叶松-白桦混交林〉草甸〉华北落叶松人工林〉灌丛;容重为灌丛〉华北落叶松-白桦混交林〉华北落叶松人工林〉草甸;p H值变化规律为华北落叶松-白桦混交林〉华北落叶松人工林〉灌丛〉草甸;土壤有机质、全氮含量随土层深度增加而减小,各土层之间差异显著;全磷和全钾含量各土层间差异不显著;不同植被类型间,草甸土壤有机质、全氮、全磷含量都高于其他3种植被类型,灌丛土壤全钾含量高于其他3种植被类型;土壤有机质与全氮呈极显著正相关;容重与含水量、有机质、全氮呈极显著负相关;p H值与有机质、全氮、全磷呈极显著负相关。Quantifying changes in soil physicochemical properties of forest ecosystems is impor- tant for forest regeneration. In this study, four vegetation types including grassland, shrub land, Larix principis-rupprechtii Mayr. pure forest, and L. principis-rupprechtii and Betula platyphlla Suk. mixed forest were selected as the research object in Haodifang Forest Farm in Taiyue, Shanxi Province. Soil samples were collected at depths of 0-10, 10-20, 20-30, 30-40, 40-50 and 50-60 cm, to analyze their physicochemieal properties. The soil bulk density and pH value increased with the increase of soil depth, while the opposite is true for the soil water content. The soil water content decreased in the following order： L. principis-rupprechtii and B. platyphlla mixed forest 〉 grassland 〉 L. principis-rupprechtii pure forest 〉 shrub land. The soil bulk density decreased in the order of shrub land 〉 L. prirtcipis-rupprechtii and B. platyphlla mixed forest 〉 L. principis-rupprechtii pure forest 〉 grassland. The pH value ranked as L. principis-rupprechtii and B. platyphlla mixed forest 〉 L. principis-rupprechtii pure forest 〉 shrub land 〉 grassland. The soil organic matter and total nitrogen （TN） presented a decreasing trend with the increase of soil depth and there were significant differences among different soil layers. There were no significant differences of total phosphorus （TP） and total potassium （TK） among different soil layers. Among the four vegetation types, the contents of soil organic matter, TN and TP in grassland were remarkably higher than that in the other three vegetation types. The TK content in shrubland was higher than that in the other three vegetation types. There was a significant positive cor- relation between TN and soil organic matter. Soil bulk density was negatively correlated with soil water content, organic matter and TN, and pH value was negatively correlated with soil organic matter, TN and TP.

关 键 词：太岳山 土壤理化性质 植被类型 土层深度 分布特征 

分 类 号：S714.2[农业科学—林学]