哈巴雪山自然保护区土壤有机质垂直分异研究

VERTICAL DIFFERENTIATION OF SOIL ORGANIC MATTER IN HABA SNOW MOUNTAIN NATURE RESERVE

通过野外实地调查采样,采用重铬酸钾容量法对土壤有机质含量测定分析,结果表明:哈巴雪山土壤有机质含量垂直分异现象较为显著,土壤A层有机质含量随海拔高度升高而增加的趋势较为明显,B层有机质含量随海拔增加,也呈现增加趋势。同一剖面各土层之间有机质含量差异明显,由表层往下层呈现递减趋势,土壤有机质表聚性明显。土壤有机质含量与气温和降水有较强相关性,还与植被类型、土壤质地、土壤结构有关。

Through the field investigation and sampling,by potassium dichromate volumetric method for determination the content of soil organic matter,the results show that the Haba Snow Mountain vertical stratification of soil organic matter content is significant,A layer of soil organic matter content increases with altitude rising trend is more obvious,and B layer of organic matter content with the increase of altitude,also showed A trend of increase.The content of organic matter in the soil layers of the same section is obviously different,and the trend of decreasing from the surface layer to the lower layer is obvious.The content of soil organic matter is strongly correlated with temperature and precipitation,as well as vegetation type,soil texture and soil structure.