节点文献
人工林立地质量评价系统的研建
Establishment of Plantation Site Quality Evaluation System
【作者】 王超群；
【导师】 吴保国；
【作者基本信息】 北京林业大学 ， 森林经理学， 2013， 硕士
【摘要】 本文在文献分析和研究的基础上,结合立地质量评价和人工林经营管理的相关理论,综合运用模型解析技术及软件开发技术,设计并实现了人工林立地质量评价系统。本文探讨了运用折半查找算法快速确定地位指数或地位级的立地质量评价技术提出了林分平均树高模型法,用于在没有地位指数表和地位级表的情况下,利用林分平均树高模型评价立地质量。详细阐述了利用定距等分法实现林分平均树高模型法评价立地质量的原理与流程；设计了林分生长收获模型库,实现了生长收获模型解析算法,使该系统适合存放多种形式的模型,满足了系统的通用性；设计开发了立地质量评价、林分生长收获预测功能模块,使系统能够根据立地质量评价结果,调用林分生长收获模型预测今后林分的生长状况。本研究所开发的系统可为广大林农和基层林业部门提供人工林立地质量评价、林分生长收获预测等功能,为人工林经营管理提供辅助决策。
【Abstract】 The paper is based on the analysis and research of a large number of literature. By combining with the related theory on site quality evaluation and plantation management, integratedly applying of model parsing techniques and software development technology, the plantation site condition evaluation system is designed and developed.The technology of using binary search algorithm to quickly determine the site index and site level has been discussed in this paper. The method and technology of using stand average tree height models to evaluate site quality has been proposed in the absence of site index tables or site level tables. The principle and process of using bisected distance algorithm on the method of stand average tree height model has been elaborated in detail. By designing the forest growth model database and realizing model analytical algorithm, the system is suitable for various kinds of models, which means the system is universal. The two function modules named site quality evaluation and harvest forecast has been designed and developed, which made the system can according to the results of site quality evaluation, using the stand growth models to predict forest growth and harvest in the future.This system is applied to evaluate site quality and forecast stand growth and harvest for foresters and basic forestry departments, and provide auxiliary decision for plantation management.