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以中国知网(CNKI)收录的《林业调查规划》期刊2018—2022年刊发的1 165篇文献为研究数据,运用CiteSpace 6.1.R6可视化分析软件对《林业调查规划》期刊近5年刊载文献的作者、发文机构、高频关键词、基金论文占比等进行分析研究。结果表明,《林业调查规划》期刊已形成了由郑进烜、郭晋平、华朝朗等一大批专家学者组成的核心作者群体,形成了由云南省林业调查规划院、西南大学、河南农业大学、山西农业大学、广东林业调查规划院等数十家林业科研院所、高等院校组成的高质量稿件来源基地。期刊发文关键词以植物配置、景观设计、生态旅游等出现的频率最高,在5年刊载的文献中有502篇文献得到各类基金项目的支持,基金论文比超过43%,且呈不断增长趋势。《林业调查规划》期刊已成为展示我国林业调查规划研究成果的重要平台,积极引导研究者加强交流合作,不断拓宽稿源,适时开展国际合作,将有助于期刊影响力的提升。 相似文献
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该文依据学科建设与经济社会发展的关系,从现代林业的特征与特点及其对森林经理学科的需求出发,论述了森林经理学科的理论与技术体系需要发展与改革。要在继承永续利用理论的基础上建立以森林生态系统完整性为经营目标的理论体系,并重点研究现代林业对森林经理学科提出的若干重要经营管理理论问题;要将现代信息技术,特别是"3S"技术融入森林经理学科的技术体系,形成现代林业信息技术体系,提升森林区划、调查、监测和森林经营管理规划、决策的水平,并重点研究现代林业提出的重要经营管理技术。 相似文献
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选取《广东林业科技》(2016年更名为《林业与环境科学》)和《广西林业科学》2015—2016年载文和作者,运用文献计量学方法对载文量、稿源质量、学科领域、作者分布、合著情况、期刊自引等进行统计分析.结果表明,两种期刊均为试验研究栏目的论文数量比例最大;省级基金论文比例大于国家级;作者单位主要分布在省会城市;两刊出版周期稳定、载文量大. 相似文献
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<正> 林业调查规划是一门综合性较强的学科,它既要调查水、土、生物、气象等自然资源,反映它们发生、发展的内在联系和演变规律;又要调查社会经济条件和分析研究国民经济发展对林业生产的需要。因此,在调查研究和资料使用上,具有周期性长和连续性、积累性强 相似文献
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“会聚技术”(Converging Technologies)是指当前迅速发展的纳米技术、生物技术(包括生物制药及基因工程)、信息技术(包括先进计算机与通信)和认知科学(包括认知神经科学)4种科学技术的协同和融合.运用“会聚技术”的整体发展观,树立“学科会聚”的学科发展理念,提出了林业学科体系的多元结构、林业学科的学术功能链、林业学科需要重点拓展的领域,并以特色优势学科为主体,构建多类型、多层次、多元化的“网络金字塔”学科体系结构,以推进林业学科的整体协调发展. 相似文献
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<正> 一九八○年十二月十一日至十四日,林业部调查规划局在北京召开了《林业调查规划科技情报座谈会》。与会代表学习了国发[1980]236号文件及梁昌武副部长在全国第一次林业科技情报工作会议上的讲话;听取了调查规划局王志民同志《开展林业调查规划科技情报交流,积极推动和发展林业调查规划工作》的讲 相似文献
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十年来,《中南林业调查规划》在上级主管部门的热情关怀和指导下,在编委会、作者、编辑的共同努力,沤心沥血地培育下,在广大读者的爱护和帮助下,从孑弱的嫩苗茁壮地成长起来,为祖国的林业现代化建设作出了应有的贡献! 十年来,《中南林业调查规划》遵循办刊宗旨,配合林业部中心工作,适时地刊出了一大批有关林业调查规划的新动态、新技术、新成果,为林业生产、科研、教学提供了大量的科学技术文献,有效地推动了科技兴林向前发展。《中南林业调查规划》是自然科学季刊,虽专业面较窄,仍在林业勘察系统、林业科研 相似文献
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此二词都是副词,这两个词的解释十分相似,要彻底搞清这两个词的区别,需要进一步研究,笔者把自己对这两个词的一些研究心得提出来供大家参考. 相似文献
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为全面了解遥感在森林火灾应用中的研究现状和发展趋势,以1999—2018年WOS、CNKI和万方收录的期刊论文为来源,运用文献计量分析法,对论文的发表时间、核心作者、主要研究机构、被引频次和关键词等进行统计分析。结果表明:国际林火遥感的研究比较成熟,发展速度快,核心研究机构和人员较多,成果突出;国内林火遥感研究整体呈上升趋势,但速度较国际发展滞后,核心作者是覃先林、李增元,核心研究机构是中国林业科学研究院,研究热点集中于森林火灾监测与森林防火。国内林火遥感研究还需更多投入,建立更稳固的团队,进行更深入地研究,并向火灾强度监测、火灾排放、灾后评估与监测、动态覆盖度监测等研究方向倾斜。 相似文献
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上海城市"近自然森林"建设的尝试 总被引:15,自引:11,他引:15
这是一个借鉴日本经验,结合上海实际的小试。选择了上海11个乡土树种,面积为3000m2,经过3年的生长,最大植株高度达4.6m,已经初步展现景观效果,预计10~20年可形成近自然森林。 相似文献
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Forest fires caused by natural forces or human activities are one of the major natural risks in Northeast China. The incidence and spatial distribution of these fires vary over time and across the forested areas in Jilin Province, Northeast China. In this study, the incidence and distribution of 6519 forest fires from 1969 to 2013 in the province were investigated. The results indicated that the spatiotemporal distribution of the burnt forest area and the fire frequency varied significantly by month, year, and region. Fire occurrence displayed notable temporal patterns in the years after forest fire prevention measures were strictly implemented by the provincial government. Generally, forest fires in Jilin occurred in months when stubble and straw were burned and human activities were intense during traditional Chinese festivals. Baishan city, Jilin city, and Yanbian were defined as fire-prone regions for their high fire frequency. Yanbian had the highest frequency, and the fires tended to be large with the highest burned area per fire. Yanbian should thus be listed as the key target area by the fire management agency in Jilin Province for better fire prevention. 相似文献
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Luis G. Esteban Juan A. Martín Paloma de Palacios Francisco García Fernández 《European Journal of Forest Research》2012,131(3):633-645
Region of provenance is defined as an area with uniform ecological conditions where stands with similar phenotypic or genetic
features are found. This study assesses the effect of differing climate conditions of eight Spanish regions of provenance
of Pinus nigra Arn. subsp. salzmannii on earlywood anatomical traits measured in samples from basal discs from mature trees. Results showed that variation in wood
biometry between provenances was high and more pronounced than intrapopulation variation. When comparing P. nigra with other Mediterranean pines, high intertracheid wall strength values are associated with better adaptation of pines to
arid conditions. However, the intraspecific variations of this parameter in P. nigra did not follow the same pattern, due to the influence of mechanical support requirements. Trees subject to greater aridity
were characterised by short tracheids, apparently resulting from their poorer growth, and high frequency of rays and ray parenchyma
cells, which would allow trees to store greater amounts of starch, which is the source of metabolites invested in minimising
the limitations imposed by water stress. Severe winter cold spells were strongly associated with high axial resin canal frequency
and large radial resin canals, creating a powerful, preformed defence system. Increased tracheid lumen involved an increase
in the size of bordered pits, favouring sap flow between tracheids, in addition to an increase in the maximum diameter of
cross-field pits, favouring the flow of water and metabolites between the axial and radial systems. The high influence of
region of provenance on structural variation in P. nigra shows the importance of provenance in the selection of seed origin for reforestation. 相似文献
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“生态立省”就是坚持把经济发展、社会进步和保护、建设良好生态环境并重作为立省之本。发展循环经济,是对“生态立省”的正确解读之一。贵州省发展循环经济至少应当体现如下五点:实践反梯度理论,以求跨越式发展;坚持走新型工业化道路,创建两低一高经济增长新模式;应用发散思维,全方位建立经济、社会耦合共生系统;优选重点,落脚实处,干出一些看得见、摸得着的实事;精细谋划,精确试验,精准计算,快速实施。 相似文献
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在"绿色双牌"植树造字定位放样项目中,先利用RTK进行1/500数字地形图测绘,在数字化成图软件CASS5.1平台上生成等高线,并进行字体整体布局设计,提取放样坐标和放样高程等放样数据,生成放样坐标数据文件,再利用RTK的坐标放样功能程序放样"绿色双牌"字体轮廓线上特征点坐标。与传统的"光学法"放样相比,RTK进行数字地形图测绘和施工放样具有明显的优势,主要表现使用方便、精度高、减少测量标志建设费用、不受通视条件限制等方面。通过实践,总结了RTK进行数字地形图测绘和施工放样以及植树造字定位放样的体会和经验。 相似文献
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Sustainable forest management requires a sound understanding of the impacts of forestry management practices, especially prescribed fire and timber harvesting, on biodiversity. Many studies have examined the impacts of fire and logging separately, but few have considered them together. Here we describe the combined effects of selective logging and repeated prescribed fire on ants in eucalypt forest near Eden in south-eastern Australia. The study was conducted within 18 experimental coupes comprising three replicates of each of six treatments, representing combinations of two logging (selectively logged and unlogged) and three prescribed burning (unburnt, routine and high fire frequency over 20 years) practices. Ants were sampled using terrestrial and arboreal pitfall traps in two plots within each of the 18 coupes. A total of 92 species from 35 genera were recorded, with ant species richness increasing with both increasing fire frequency and selective harvesting. We also found significant differences in ant species composition between management treatments; however, these differences were rather modest, and apparent only between extremes of fire and harvesting combinations. Logging on its own was not a significant factor contributing to variation in ant species composition. However, the responses of two common species and a key functional group to fire depended on logging treatment; in each case their abundance decreased with increasing fire frequency at unlogged sites, but increased at logged sites. The general resilience of ant communities suggests that forests remain in good functional health even when subject to a combination of selective logging and frequent burning. However, our study under-sampled species with specialist microhabitat requirements, and these might have been more heavily impacted. We have also revealed some significant interactions between the effects of fire and logging, which highlights the importance of considering combined impacts of forest management practices. 相似文献
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为了解我国桉树相关行业的发展动态,本文以中国知网数据库(www.cnki.net)的文献为数据源,以文献计量学方法,对我国1987—2016年共30 a的桉树专题相关文献进行阶段性(以10 a为界)统计,从文献数量、学科分布、研究层次、文献作者、发文机构、资助基金、文献来源和关键词等8个方面进行了分析.结果表明:随着年份增长,桉树专题文献数量总体呈现上升趋势,1987—1996、1997—2006及2007—2016年的文献数量分别为965、2115及4631篇,以第3阶段(2007—2016年)增幅最大.30 a间3个阶段桉树研究的学科领域均以林业学科最多,所占比例为70%左右,研究层次均以工程技术(自科)和基础与应用基础研究(自科)为主.不同阶段文献作者的最高发文数量分别为11、30和75篇,发文机构均主要集中在广东、广西、云南、湖南、福建等地.3个阶段的文献主要以国家科技攻关计划和国家自然科学基金资助为主,文献来源主要出自期刊,整个30 a间,均以《桉树科技》所刊登的文章数量为最多,是其他期刊的2~6倍.关键词均以"桉树"出现的频次最高,其他主要关键词主要为品种与人工林. 相似文献