在没有纯金红石型或锐铁矿型标样的情况下，利用线性回归方法求出参比强度K。

The reference intensity K has been obtained by means of linear regression without available the pure rutile or the pure anatase.

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坡向对锐齿槲栎种群的更新有重要影响，光照好的东南坡上的更新情况明显比光照较少的西北坡好。

Influence of the slopes with different directions on population regeneration was also studied, and it showed that the slope direction was one important factor for regeneration.

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