长白落叶松人工林培育投入产出分析

作者通过收集积累的大量观察数据,分析了长白落叶松投入的生产资源数量与产出的产品数量之间存在的函数关系。并采用理查德方程进行拟合,建立了三种林分的投入产出模型,是人工林培育投入产出定量分析的一种新尝试。     

长白落叶松人工林培育经济效益分析

本文采用净现值、内部收益率和效益成本比３种方法，对长白落叶松人工林的现实林、丰产林和模式林进行了比较分析，为栽培技术的推广和建立工业用材林基地提供决策依据     

落叶松人工林分类及定向培育经营模式

黑龙江省落叶松主要造林树种有长白落叶松(Larixolgansis)及兴安落叶松(L.dahurica)两种.本文讨论的落叶松人工林林分类型及其经营模式泛指在我省小兴安岭、张广才岭、老爷岭及完达山林区分     

华北落叶松人工林大径材培育综述

我国大径材原料供需形势严峻,培育华北落叶松人工林大径材可以缓解用材紧张现状。笔者在借鉴他人对桉树、杉木大径材培育研究的基础上,从优质种源、立地条件和栽培技术3方面综述了华北落叶松人工林大径材培育技术,以期为华北落叶松人工林大径材培育提供理论参考。     

河北省落叶松人工林可持续发展对策探讨

在分析河北省落叶松人工林现状、发展趋势和存在问题的基础上,探讨了今后落叶松人工林要持续发展的途径,提出了加快良种生产,开展地力衰退防治研究,大力营造混交林,科学经营现有林,对定向培育中短轮伐期工业用材林科学施肥等对策。     

浅论落叶松人工林地力衰退的原因与对策

浅论落叶松人工林地力衰退的原因与对策苑辉，付宝东，张东江（辽宁省林科院沈阳１１００３２）（开原市林业局）落叶松是我国北方重要的用材树种，近几十年来，营造了大面积的落叶松纯林，由于只注重林木的速生丰产，忽视了林地生产力的维护，因而在林业生产中，致使落叶...     

影响黑龙江西部半干旱区人工林培育质量的因素分析及对策

人工林培育是黑龙江西部半干旱区植被建设的主体,其质量问题倍受该区社会各界有识之士所关注。对影响该区人工林培育质量的诸因素进行了剖析,并针对存在的问题提出了相应整改措施及对策。     

河北省落叶松人工林可持续发展对策探讨

在分析河北省落叶松人工林现状、发展趋势和存在问题的基础上 ,探讨了今后落叶松人工林可持续发展的途径 ,提出了加快良种生产 ,开展地力衰退防治研究 ,大力营造混交林 ,科学经营现有林 ,对定向培育中短轮伐期工业用材林科学施肥等对策。     

浅谈落叶松人工林地力衰退的原因与对策

通过多年的观察和对比,以长期丰富的工作经验为基础,对落叶松人工林地力衰退的原因进行了综合分析;同时对落叶松人工林改善群落结构,增加生物多样性,长期稳定的发展提出了独特的见解,为的落叶松人工林长期可持续经营提出了指导性建议。     

落叶松人工中、幼林价值有偿转让初探

结合当前市场经济的需求,本文依据落叶松营林调查资料,提出了落叶松人工中、幼林价值有偿转让林价计算方法,为林价的有偿转让提供参考依据。     

关于落叶松人工林短轮伐期经营的思考

通过对落叶松人工林短轮伐期经营与实践,提出了进行落叶松人工林短轮伐期经营的必要性,并阐述了进行短轮伐期经营的技术要点。     

天然落叶松叶量及叶面积模型研究

本文以不同林分条件下的落叶松天然林为研究对象,基于12块标准地35株标准木的实测叶量数据,应用统计分析软件建立落叶松天然林叶量和叶面积的回归模型。     

The Lintula Larch Forest

The Lintula Larch Forest, also called the Raivola Larch Forest, is one of the most magnificent cultivated forests in northern Europe. It has had a major impact on the cultivation of larch throughout the world, and it became part of the Unesco's World Heritage list in 1991. This article summarizes for the first time to an international audience the establishment, administration and management, stand development and research carried out in Lintula Park. It is based on Russian and Finnish papers and earlier unpublished results. The forest is located 63 km north-west of St Petersburg in the Karelian Isthmus. It was established by order of Peter the Great to supply the Russian fleet with timber for shipbuilding. Ferdinand Gabriel Fockel, a German forest expert, established the oldest stands in 1738–1750 with seed from the Province of Arkhangelsk. Since then the area of the forest has expanded and now the total area of larch stands is 55.9 ha; 23.5 ha of the “old stands” established in 1738–1851 still remain. The Lintula larch stands were famous for their high yield, but part of the reputation was based on small sample plots that were not representative of the stands. However, the high volumes of different tree stands are impressive. For example, in a 255-year-old stand with 339 trees ha^?1 the volume of growing stock was 1284 m³ ha^?1. In small sample plots much higher volumes are found. The average annual growth of the oldest larch stands has never exceeded 6.2–7.2 m³ ha^?1. The volume increment was, however, long-lasting, and annual growth started to decrease only after 148–166 years. Some plots had an increase in yield even at the age of 257 years. The yield of the larches clearly surpassed that of Norway spruce and Scots pine in nearby stands. The Lintula Larch Forest has provided valuable experience on the cultivation of larch. The root system of larch is relatively weak, and it is therefore susceptible to wind damage and rot fungi. An important conclusion drawn from the development of the Lintula Larch Forest is that the cultivation of larch is worthwhile only when grown as pure stands using intensive growing techniques.     

落叶松人工林地位指数级导向曲线模型的研究

本文用约1000块样地资抖,系统地研究了黑龙江省落叶松人工林的地位指数级导向曲线模型。通过林业统计分析软件Statistica6.0对各落叶松人工林数据进行拟合、分析比较,结果为：从拟合精度、曲线走向与散点分布趋势、残差分布等综合考虑,舒马切尔曲线函数比较适合落叶松人工林地位指数级导向曲线模型的拟合。     

大兴安岭岭南地区营造速生丰产林技术的探讨

通过对大兴安岭岭南次生林改造地的调查与研究,以林缘优势和混交效应为理论基础,拟定适宜的改造方式与林分结构;根据次生林地的特点,采取相应的造林技术措施,达到提高森林生产力,实现速生丰产的目的。     

现有落叶松人工林的评价

通过对现有落叶松人工纯林及混交林之间主要差异性的分析表明：落叶松混交林无论在树种结构，径级结构，林分的稳定性，林分生长量以及改善土壤生态环境等方面都比落叶松纯林好，因此，在经营落叶松人工纯林时，要充分利用立地条件，树种组成大力培养针阔叶混交林，实现人工林天然化，恢复和建立一个森林生物群落。     

实施天然林保护工程中人工速生丰产林技术的探讨

本文详细介绍了营造速生丰产林的技术、生产量指标及技术措施。     

Health Assessment Indicator System for Larch Plantation in Jin’gouling Forest Farm, Jilin Province

For the healthy management of plantation, a health assessment indicator system was designed at forest stand scale for the larch plantation in Jin'ouling Forest Farm, Wangqing Forestry Bureau, Jilin Province. The system consisted of 3 categories—forest structure, external interferences and management objectives, with 15 indicators. The results showed that: 1) the assessment indicator system was scientific and rational for different age groups of larch plantations; 2) both the half-mature larch plantation and...     

吉安市森林资源培育现状和对策

在通过详细分析吉安市森林资源培育现状、制约因素和存在问题的基础上，就如何搞好森林资源培育，不断壮大资源总量，提高资源质量，促进吉安市由林业大市向林业强市转变，从资源培育这个角度提出切实可行的对策。