摘要
选取我国西南地区典型的水耕人为土剖面,模拟不同的水热条件,研究其诊断层土壤特性(pH、EC)的动态变化,并分析其与其他土壤理化性质的相关性。结果表明:(1)在不同的温度下,土壤的pH值有变化,但变化不显著。土壤的EC变化比较大,随着温度的升高,土壤的EC增大。(2)水耕熟化和发育程度较高的水耕人为土的电导率较高(土壤呈强碱性的除外),水耕表层的电导率比氧化还原层高。(3)土壤特性(pH、EC)与土壤粘粒含量呈正相关关系。(4)不同水热条件下水耕人为土土壤pH、电导率动态变化特征,可用动态变化函数方程进行拟合。研究结果对土壤系统分类定量指标建立有一定参考意义。
The dynamic changes of soil properties （ pH and EC） in diagnostic horizon under different hydrothermal condition and the correlativity？？ with the other physical and chemical properties were studied by selecting typical profiles of Stagnic Anthrosols in southwestern China. The results indicated that ： （ 1 ） Soil property （pH） changed slightly but not markedly under different temperature. Soil property （EC） increased with the raise of temperature. （2） Soil electrical eonductivities were higher relatively in higher degree of anthrostagnic maturation and develop- ment （except strongly alkaline soils ）. The electrical conductivities of anthrostagnic epipedon were higher than hydragric horizon. （3） Soil properties （pH and EC） were positively correlated with content of soil clay. （4） Func- tional equation could be used to fit the dynamic changes of soil properties （ pH and EC） under different hydrothermal condition.
出处
《山地学报》
CSCD
北大核心
2010年第4期431-436,共6页
Mountain Research
基金
中国科学院知识创新工程重要方向项目(KZCX2 -YW -409)~~
