油松树干液流速率与土壤容积含水量和土壤水势呈明显线性相关关系。
There exists a multi linearship between the stem sap flow velocity and the soil moisture, soil water potential.
当土壤容积含水量为15 ~ 45%时,校正曲线近似为一直线,其他因素只改变直线的截距或斜率。
When the soil bulk density water content is between 15% to 45%, the calibration curve is approximately a straight line, and the intercept and slope are only influenced by the above factors.
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