【摘要】 以林场造林规划设计中立地类型划分为目标,以小班为基本单元,以获取小班的立地类型为目的,在嵌入式组件GIS软件——MapObjects(MO)的支持下,讨论立地决策支持模型的基本组成及建立过程。其由二级决策支持模型组成,即立地区划决策支持模型和立地类型决策支持模型。将造林地的空间信息与属性信息结合起来,运用MO所提供的空间分析模块,结合MO的空间SSQL查询语句,对基于立地因子的立地类型知识库和基于行政区划的立地亚区知识库进行操作,实现造林地小班的立地类型自动决策。更多还原

【Abstract】 Based on MapObjects(MO),the software of the component object model (COM) geographic information system (GIS),site decision support model (SDSM) was shown in this paper. As a result,the spatial information and attributive information were synthetically managed,such as digital elevation model,digital terrain model,soil distribution model,forest distribution model and so on. It was aimed at classification of site type in afforestation planning and designing in forestry centre. The elementary unit is subcompartment,and so site type of subcompartment is operated by SDSM. The model was composed of site district decision support model and site type decision support model. Spatial analysis module,in the form of SSQL (spatial standard query language was applied) in MO,was operated to the knowledge base of site type based site factor and of site district based regionalism,so that the site type of afforestation subcompartment can be automatically afforded.更多还原