本文提出用系统动力学的方法来研究森林资源消长,并为系统预测,建立和提供了一个县级森林资源消长模型和S、D、流程图。
D flow diagram that was built by means of system Dynamics, which is the developing and passing system of forest resources for a county.
基于三期森林资源分布图,以GIS作为分析手段,应用景观生态学数量方法,研究了森林景观及景观类型的变化情况。
Based on the forest resources distribution map of three periods, taking GIS as a means of analysis, applying landscape ecology means, forest landscape and its type change were studied.
区划是森林资源调查和林业用图制作的基础。
Division is the basis of forest resources survey and forestry map drawing.
应用推荐