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分析典型资料匮乏的高寒区——羌塘高原中部查日那足山麓湖盆区8个点位0~5 cm、5~10 cm、10~20 cm三个深度层次的22个土壤样品,分析改区域的土壤属性特征及其空间分异规律。研究发现:(1)研究区土壤p H值平均为8.9;有机质、全磷、全钾等养分含量低;钙、镁含量高;钠、钾、铁等元素含量低。(2)从湖滨到山麓,土壤中大于2 mm砾石含量呈逐渐降低的趋势,但细土物质平均粒径逐渐变大;土壤有机质、氮、钠、微量元素含量呈上升趋势,钙和镁呈下降趋势;其他指标波动较大。(3)土壤碳氮比稳定在5∶1左右;钙、镁含量呈显著正相关,钙镁与其他指标呈显著负相关;钾、钠与除钙、镁外的其他金属元素含量呈显著的正相关关系。
Analysis of 22 soil samples at 8 depths of 0 ~ 5 cm, 5 ~ 10 cm and 10 ~ 20 cm in the central part of Chajonarfoot in the central part of the Qiangtang Plateau by analyzing typical alpine areas lacking typical data. Characteristics of Soil Properties and Their Spatial Heterogeneity in Areas Changed. The results showed that: (1) The soil p H value in the study area averaged 8.9; the content of organic matter, total phosphorus and total potassium was low; the content of calcium and magnesium was high; the content of sodium, potassium and iron was low. (2) From the lakeshore to the foothills, the content of gravels more than 2 mm in soil tends to decrease, but the average particle size of fine soil becomes larger gradually; the content of soil organic matter, nitrogen, sodium and trace elements is on the rise, Downtrend; other indicators volatile. (3) Soil C: N ratio is stable at about 5: 1; Ca and Mg contents are positively correlated; Ca and Mg are negatively correlated with other indexes; K, Na and other metal elements except Ca and Mg are significant Positive relationship.