森林小班经营方案编制辅助决策支持技术

Research on technology of forest subcompartments management plan assistant decision

森林经营方案是森林经营的核心,主要对象是县或林场,实施时分解到年度、落实到小班,可在操作过程中,很难细化到小班。针对人工林经营小班选择和小班经营方案辅助编制问题,研究了编制经营方案的小班的智能选择、小班适宜性评价与小班经营方案推理生成方法,设计并实现了基于小班的经营方案编制辅助决策支持系统。通过森林经营专家对森林经营方案的知识分析,构建了经营决策支持系统的知识库和推理机,采用产生式规则表示法表示根据林分状态、立地条件和经营目标等条件确定经营类型的知识;设计了"智能设计"和"手动辅助设计"2种编案方式,并以Visual Studio 2008和ArcGIS Engine 9.3为开发工具,Access为数据库引擎,完成了系统的构建,解决了森林经营小班有效选择和小班经营方案辅助编制问题,有效提高了森林经营的数字化水平。

A forest management plan, the core of forest management, has as its main object the country or forest farm. Implementation of what to factor into annual requirements with a focus on subcompartments is important for research on decision-making support systems of the forest management plan; however, data based on subcompartments is rarely reported. Thus, this study determined a method and technical route for plantation management by compiling subcompartment data to produce management plans. An intelligent selection method of subcompartments needed to establish a management plan was researched, and then a suitability evaluation method of subcompartments and a management plan reasoning method of subcompartments were selected. Next,a Forest Subcompartment Management Plan Assistant Decision-Making System was designed and implemented.The forest management plan was analyzed by forest management experts, and a knowledge base and inference engine of a decision support system were built. This system used production rules according to the state of the stand, site conditions, management objectives, and other conditions to determine management choices. From this an intelligent design and manually aided design were developed using Visual Studio 2008 and ArcGIS Engine 9.3 as developing tools, and Access as the database engine to complete construction of the system. The system could help users intelligently selected management subcompartments based on management assignment,then compiled subcompartments management plan by two ways, which were provided by the system. It could be used in forest farms, solved forest management with effective choices and management plan compilation assistance problems and effectively improved the digital level of forest management.