应用管道模型原理估测华北落叶松叶量叶面积的方法

A Measure to Estimate the Leafbiomass and Leaf Area of Larix Principis—rupprechtii with Pipe Model Principle

从管道模型的基本原理出发,本文论述了华北落叶松单木累计叶量的空间垂直分布形式及叶量、叶面积的估测方法。对国外同类研究中由胸高边材估测叶量所存在的问题提出了本文的观点。总结出两种估测叶量、叶面积的新方法,即削度方程法和胸高断面积生长量法,该方法具有外业测定简单,估测精度高的优点。

Applying the fundmental principles of pipe model, the vertical distribution pattern of accumulated leafbiomass in a single tree of Larix Principis—rupprechtii is described. The methods to estimate the leafbiomass and leaf area are discussed. On this basis,some viewpoints of the author are presented on problems existed in the process of estimating leafbiomass fron B.H sapwood. This paper gives out two new methods to estimate leafbiomass and leaf area,i.e., the B.H section area increament method and the taper equation method. The two methods have the advantages of easy to measure in the field and high precision.