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本文论述了用“底视法”测量叶面积指数的基本原理，并在中国科学院禹城综合试验站遥感试验场以“冠层分析仪”对该方法进行了试验，提出了刺柏针叶叶面积指数的新估算方法。通过计算证明，测定值和估算值具有较好的一致性。这种以“底视法”为基础的冠层分析仪可以用于植被定量遥感的快速地面定标。
This paper discusses the basic principle of measuring the leaf area index by the “bottom view method” and tests the method with the “canopy analyzer” at the remote sensing test site of Yucheng Integrated Test Station, Chinese Academy of Sciences. New Estimation Method of Area Index. The calculation shows that the measured value and the estimated value have good consistency. This “bottom-view” based canopy analyzer can be used for rapid surface calibration of quantitative vegetation remote sensing.