Variability in growth of trees in uneven-aged stands displays the need for optimizing diversified harvest diameters

Variability in growth of trees in uneven-aged stands displays the need for optimizing diversified harvest diameters
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不同年龄林中树木生长的变异性表明需要优化多样化的采伐直径

DOI:
10.1007/s10342-015-0935-6
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发表时间:
2016
影响因子:
2.8
通讯作者:
Griess
Griess
中科院分区:
农林科学2区
文献类型:
--
作者:
Roessiger;Clasen;Griess

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这项研究提出了经济上最优的管理异龄混交山地森林,考虑到树木生长的变异性。我们分了9846棵银杉(Abies alba)、山毛榉(Fagus sylvatica)和云杉在Snežnik和Leskova多利纳管理单位的898块森林清查地块上测量的云杉树(4905公顷,Dinaric山,斯洛文尼亚)分为三个生长级(慢,中,快生长的树木),以模拟最佳的森林管理,在100年的一段时间内,不断变化的树木生长,林分密度,直径分布和树种组成。我们开发了一个密度依赖和阶段和生长结构的矩阵转换模型,同时长期的林分动态预测调度的最佳收获,以最大限度地提高净现值,使用非线性方法。树种的生态被认为是通过使用树种特异性和林分密度和直径依赖的逻辑函数的向内生长,过渡,和死亡率。该模型预测,100年内树种组成将从冷杉为主的森林转变为山毛榉为主的森林。从收获缓慢和快速生长的树木,如果他们都有中等增长的增长敏感的收获增加了净收入,并保持不均匀的年龄林分结构的变化。最佳收获直径不同的生长类,时间段和树种,根据个别树木的经济成熟度和范围从12(商业前间伐)到72厘米(目标直径)。该模拟突出了改进的生物经济模型的潜力,从不等年龄的森林和调度多目标的最佳管理制度,提高产量。
This study presents economically optimal management of uneven-aged mixed mountain forests that takes into account tree growth variability. We divided 9846 silver fir (Abies alba), beech (Fagus sylvatica), and spruce (Picea abies) trees measured on 898 forest inventory plots in the Snežnik and Leskova dolina management units (4905 ha, Dinaric mountains, Slovenia) into three growth classes (slow-, medium-, and fast-growing trees) to simulate optimal forest management over a period of 100 years with respect to changing tree growth, stand density, diameter distribution, and tree species composition. We developed a density-dependent and stage and growth-structured matrix transition model which—simultaneous to the long-term stand dynamics projection—scheduled optimal harvesting to maximize the net present value using a nonlinear approach. The ecology of tree species was considered by using tree species-specific and stand-density and diameter-dependent logistic functions for ingrowth, transition, and mortality. The model projected a shift in tree species composition from fir-dominated to beech-dominated forests within 100 years. A change from harvesting slow- and fast-growing trees as if they all had medium growth to growth-sensitive harvesting increased the net revenue and maintained the uneven-aged stand structure. Optimal harvest diameters varied among growth classes, time periods, and tree species according to the economic maturity of individual trees and ranged from 12 (pre-commercial thinning) to 72 cm (target diameter). The simulation highlights the potential of improved bio-economic models for increasing yield from uneven-aged forests and scheduling optimal management regimes with multiple objectives.
DOI: 10.1890/12-1503.1
发表时间: 2013-08-01
影响因子: 6.1
作者:
Temperli, Christian;Bugmann, Harald;Elkin, Che
通讯作者: Elkin, Che
DOI: --
发表时间: 2009
期刊:
影响因子: --
作者:
M. Müller;P. Hildebrandt
通讯作者: P. Hildebrandt
法国汝拉地区混合树种、树龄不均的森林的生长和管理:对经济回报和树木多样性的影响
DOI: --
发表时间: 1995
期刊: Forestry sciences
影响因子: --
作者:
J. Buongiorno;J. Peyron;F. Houllier;Max Bruciamacchie
通讯作者: Max Bruciamacchie
输入成本、规模经济和技术变革对国际纸浆和纸张价格的影响。
DOI: --
发表时间: 1980
期刊:
影响因子: --
作者:
J. Buongiorno;J. Gilless
通讯作者: J. Gilless
不均匀年龄森林经营的矩阵模型。
DOI: --
发表时间: 1980
期刊:
影响因子: --
作者:
J. Buongiorno;B. Michie
通讯作者: B. Michie