森林经理科学数据整合技术研究

分析了目前森林资源各类数据存在的问题。针对问题,从森林经理科学数据整合范畴、森林经理科学数据分类与编码、森林经理科学元数据存储与采集等方面进行研究。研建了森林经理科学数据分类体系和编码方法;设计了相应的数据库、元数据字典和代码库;采用VBA技术开发了元数据采集工具。以热带林业实验中心森林经理科学数据管理应用为案例,初步实现了森林经理科学数据整合方法的探索性研究。应用结果表明:通过科学数据整合能有效地改进数据的质量,使分散在各部分的数据便于规范管理、便于开展多目标、多学科和多行业应用,为以后进一步数据挖掘奠定了基础。     

GIS内外业一体化数据双向同步技术研究

对空间数据内外业一体化作业过程中数据双向同步技术进行研究。阐述GIS数据双向同步的原理、数据还原原理,提出了基于最优差异化机制的双向数据同步模型,并给出此模型基础上的技术实现案例。实践表明,此方案能很好地解决GIS内外业一体化的数据同步需求。     

Price dynamics in the Russian–Finnish roundwood trade

Abstract

This study examines price dynamics in roundwood exports from Russia to Finland, the largest international roundwood trade flow within Europe. The analysis covers six main timber assortments; sawlog and pulpwood dimensions of pine, spruce and birch. The study period, starting from the devaluation of the rouble in August 1998, was characterized by a drastic increase in the volumes of Russian roundwood imported into Finland, and a coinciding structural change in the timber assortment distribution of the Finnish roundwood imports. A basic hypothesis of economic theory, the law of one price, was tested by using quarterly time series and methods of cointegration analysis. According to the cointegration tests, the prices of Finnish and Russian spruce sawlogs have moved closely together. Furthermore, the changes in the prices of spruce sawlogs in the Finnish roundwood market are reflected in the Russian prices and not vice versa. Regarding other timber assortments, price co-movement and consequent market integration was not detected.     

自然保护地整合优化中GIS技术应用探讨

2021年8月,国家林业和草原局发布了"十四五"林业草原保护发展规划纲要,要求"推进自然保护地整合优化,科学界定范围和管控分区,组织勘界立标".GIS技术是自然保护地归并整合、边界范围调整、功能分区优化和资源管理的基本技术工具,科学利用GIS技术可以提升自然保护地整合优化工作效率,快速进行图表交互式统计,并提供动态及三...     

林业经济信息集成平台的构建

本文通过介绍基于J2EE技术框架的林业经济信息系统的构建,指出了为林业经济信息的集成与共享提供一个基础平台的重要作用与意义,以及其构建的方法与步骤。     

中外人工用材林经营方式比较分析

首先对国内外人工用材林经营方式进行了分析, 进而提出通过林工贸一体化发挥产业间的协同效应, 实现人工用材林由分户经营向规模化经营的转变, 将成为我国人工用材林经营方式的发展趋势; 其次, 对我国人工用材林规模化经营的现实性进行了分析; 最后, 在探讨林工贸一体化实现规模化经营内在机理的基础上, 提出林工贸一体化经营是我国人工用材林规模化经营的实现途径。     

Process integration of ethanol production from Japanese beech as treated with hot-compressed water followed by enzymatic treatment

Ethanol was produced from the hydrolysate collected as a water-soluble (WS) portion and a residue after hot-compressed water (HCW) treatment of Japanese beech with and without fractionation. Simultaneous saccharification with β-xylosidase and isomerization with xylose isomerase followed by fermentation with Saccharomyces cerevisiae were applied to the WS portion; simultaneous saccharification with cellulase and fermentation with S. cerevisiae was applied to the residue. Integration of the processes for the WS portion and the residue was investigated to improve the conversion efficiency throughout the whole process. The ethanol yield in the integrated process without fractionation was comparable with that for the process with fractionation. Ethanol yields were improved for both of the processes by modifying the operation pattern in which cellulase was added prior to fermentation of the residue.     

千岛湖森林康养基地发展路径探析——基于千岛湖龙川湾的调查研究

国家相关管理部门联合提出按照“环境优良、服务优质、管理完善、特色鲜明、效益明显”的要求建设一批国家森林康养基地。以浙江千岛湖龙川湾为例,分析其森林资源、地理区位、产业链、发展规模、社会合作、管理保障、三大效益等方面建设森林康养基地的优势,整合提升游憩观赏、研学文化、垂钓休闲、扶犁耕地、康养保健、疗养康复、健身拓展区域空间布局与发展举措,从康养体验、休闲体验、运动健身等方面增强千岛湖龙川湾森林康养基地功能,推进森林康养产业发展。     

水产品网络营销中网络零售的服务整合

本文分析了我国水产品网络零售现状,通过结合介绍美国pikeplacefish．com水产品网络零售网站的4P网络营销策略,提出了水产品网络零售的服务整合策略,即将水产品网站定位于水产品营销平台,发挥Web2．0技术优势,进行网络营销的组合策略,从而提升企业水产品销售。     

江西省农民专业经济合作组织发展政策研究

从江西省农民专业经济合作组织的发展现状及特点入手,分析了目前江西省农民专业经济合作组织存在的主要问题,并提出了相应的发展政策。