CN105241402A - 一种快速估测立木材积的方法 - Google Patents

一种快速估测立木材积的方法 Download PDF

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CN105241402A
CN105241402A CN201510602381.5A CN201510602381A CN105241402A CN 105241402 A CN105241402 A CN 105241402A CN 201510602381 A CN201510602381 A CN 201510602381A CN 105241402 A CN105241402 A CN 105241402A
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height
perimeter
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CN105241402B (zh
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冯仲科
杨立岩
吴言松
刘金成
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Beijing Beilin Eco-Pastoral Landscape Planning And Design Co Ltd
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Beijing Forestry University
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Abstract

本发明公开了一种快速估测立木材积的方法。该发明是以围尺为工具测量立木地径处和树高h=1.51m处周长,根据Kunze?M.曲线方程快速估算立木材积和树高。

Description

一种快速估测立木材积的方法
一、技术领域
本发明涉及一种测量立木材积的方法,特别是一种快速估测立木材积的方法。
二、技术背景
森林立木蓄积是森林生态服务功能的一个重要指标,很大程度上代表了森林生长成熟阶段和森林生态活力,也是当前全球变暖热点问题中的重要因素。因此,开展森林立木蓄积监测和评估具有重要意义。由于森林面积广阔、树木数量大、作业困难等各种因素,测定全部树木的立木材积进行立木蓄积监测需要耗费大量资源,在实践中常采用抽样理论建立立木材积方程进行森林立木蓄积评估。多年以来林业工作者一直采用伐倒标准木获取建立立木材积方程所需的建模样本这种方法虽然精度较高,但需要对树木进行伐倒,存在破坏性大、成本高、工作效率低等问题,且不符合保护生态环境的宗旨。
三、发明内容
为克服传统方法的测量立木材积需要已知模型,伐倒测量破坏性大,成本高,工作效率低等缺点,提高效率,实现快速估测立木材积,本发明提供了一种快速估测立木材积的方法。
本发明的目的是这样实现的:
以围尺为工具测量立木地径处和树高h=1.51m处周长,根据孔兹干曲线方程y2=pxk快速估算立木材积和树高,具体步骤如下:
1)选择目标树,用围尺测得立木地径处周长L0,在树高h=1.51m处测得立木周长L1,并利用数模①计算两次测量周长之差ΔL;
2)目标树若为针叶树种,则利用数模② V = 4 L 0 3 Δ L H = h L 0 2 L 0 2 - L 1 2 , 若为阔叶树种,则利用数模③ V = 6 L 0 3 Δ L H = h L 0 2 L 0 2 - L 1 2 , 计算得到目标树的树高H和材积V。
本项发明与现有方法相比具有以下优点:
(1)不需已知一元/二元立木材积模型和实验形数等材积模型或参数;
(2)不需对树木进行伐倒,没有破坏性、工作效率高;
(3)实现了快速估测立木树高和材积,操作方便,计算简便快捷。
四、具体实施方式:
一种快速估测立木材积的方法与现有方法不同,具体在于:
1)选择目标树,用围尺测得立木地径处周长L0,在树高h=1.51m处测得立木周长L1,并利用数模①计算两次测量周长之差ΔL。
2)目标树若为针叶树种,则利用数模② V = 4 L 0 3 Δ L H = h L 0 2 L 0 2 - L 1 2 计算得到目标树的树高H和材积V。
3)目标树若为阔叶树种,则利用数模③ { V = 6 L 0 3 Δ L H = h L 0 2 L 0 2 - L 1 2 , 计算得到目标树的树高H和材积V。

Claims (1)

1.一种快速估测立木材积的方法,其特征是:以围尺为工具测量立木地面处和树高h=1.51m处周长,根据孔兹干曲线方程y2=pxk快速估算立木材积和树高,具体步骤如下:
1)选择目标树,用围尺测得立木地径处周长L0,在树高h=1.51m处测得立木周长L1,并利用数模①计算两次测量周长之差ΔL;
2)目标树若为针叶树种,则利用数模② V = 4 L 0 3 Δ L H = h L 0 2 L 0 2 - L 1 2 , 若为阔叶树种,则利用数模③ { V = 6 L 0 3 Δ L H = h L 0 2 L 0 2 - L 1 2 , 计算得到目标树的树高H和材积V。
CN201510602381.5A 2015-09-18 2015-09-18 一种快速估测立木材积的方法 Active CN105241402B (zh)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101008564A (zh) * 2006-01-16 2007-08-01 北京林业大学 用三维激光扫描系统编制立木材积表方法
US7315794B1 (en) * 2004-03-23 2008-01-01 Willis Frank L Timber survey process and apparatus
FR2913266A1 (fr) * 2007-03-02 2008-09-05 Pascal Dassonvalle Procede de determination des dimensions et/ou du volume d'un objet a distance,et dispositif concu pour la mise en oeuvre dudit procede.
CN103486991A (zh) * 2013-10-08 2014-01-01 北京林业大学 一种树冠遮挡条件下全站仪测量树高及材积的方法
CN103791872A (zh) * 2014-03-04 2014-05-14 北京林业大学 一种使用新型胸高形数测定立木材积的方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7315794B1 (en) * 2004-03-23 2008-01-01 Willis Frank L Timber survey process and apparatus
CN101008564A (zh) * 2006-01-16 2007-08-01 北京林业大学 用三维激光扫描系统编制立木材积表方法
FR2913266A1 (fr) * 2007-03-02 2008-09-05 Pascal Dassonvalle Procede de determination des dimensions et/ou du volume d'un objet a distance,et dispositif concu pour la mise en oeuvre dudit procede.
CN103486991A (zh) * 2013-10-08 2014-01-01 北京林业大学 一种树冠遮挡条件下全站仪测量树高及材积的方法
CN103791872A (zh) * 2014-03-04 2014-05-14 北京林业大学 一种使用新型胸高形数测定立木材积的方法

Non-Patent Citations (3)

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王铁牛等: "针叶树立木材积测定方法的研究", 《林业资源管理》 *
赵芳等: "树冠遮挡条件下全站仪测量树高及材积方法", 《农业工程学报》 *

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