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近自然森林经营辅助设计系统的研发
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摘要
自从近自然的森林经营技术引入我国开展实践以来,越来越多的人投入到近自然林业的研究中去,并且加以重视。本文首先介绍了近自然森林经营在国内外的研究现状,阐述了近自然森林经营辅助设计系统研发的研究目的和意义,并且从理论和技术体系两方面,总结了近自然森林经营的相关知识。
     另外,为了满足近自然林业生产建设和发展的需要,利用Visual Basic 6.0开发语言和Access数据库相结合,采用C/S(Client/Serve)系统架构为开发模式,开发了近自然森林经营辅助设计系统。该系统为一个可视化的辅助设计系统,能够实现数据管理、数据统计、分布图、动态生长、生长模型、作业设计等相关的功能,为数据库表建立统一的模板,提高整合性和利用率,满足森林经营的信息需求,实现了树木空间位置分布图,帮助确定抚育择伐的具体目标,动态分析则及时了解到经营活动对森林各项指标的影响情况,帮助制定和调整相应的作业计划,使得森林经营更科学化、自动化、规范化,为林业部门合理地进行近自然森林经营管理、实现森林资源的可持续发展、分类经营和做出正确的经营决策提供了可操作性。
     最后,以北京刺槐林数据为实例,成功地应用了该系统所实现的功能。
Since the close-to-nature forest management technology introduced and practised in our country, more and more researchers have joined the study of close-to-nature forest, and paid attention to it. Firstly, the close-to-natural forest concepts and the present research status domestic and abroad are introduced in the paper, and then the research purpose and meaning of the close-to-natural forest management are also described. According to the two aspects of the theoretical and technical systems, the related close-to-natural forest knowledge is summarized.
     In addition, to satisfy the requirements of the forest construction and development, the close-to-natural forest management aided design system is developed based on the visual basic 6.0 development language and Access database, and the C/S (Client/Server) architecture system is adopted as the development mode. The system is a visual assistant system, which can realize the functions, such as the data management, data statistic, distribution map, dynamic growth, growth model, and operational design etc. The system can set up unifeid template for the database table, improve the integration and utilization, satisfy the information requirement of forest management, realiza the space position distribution map of tree, and help to determine the goal of improvement-selection cutting. According to the dynamic analysis, the influences of the management actions to the forest indexes can be investigated in time, help to establish and adjust the working plan. The system can be maken forest management more scientific, automatic and standardized, and provide an assistant decision-making tool for the proper managing of the close-to-natural forest management, realizing the sustainable development and classification management of forest resource, and making suitable management decision.
     Finally, taking the data of Beijing Locust Forest as example, the proposed system is applied in the Beijing Locust Forest, and the related functions are realized successfully.
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