基于植被分布特征的森林景观建模方法

doi:10.11947/j.AGCS.2018.20180102

测绘学报 ›› 2018, Vol. 47 ›› Issue (8): 1133-1140.doi: 10.11947/j.AGCS.2018.20180102

基于植被分布特征的森林景观建模方法

李佳祺, 高亦远, 佘江峰

南京大学地理与海洋科学学院江苏省地理信息技术重点实验室, 江苏南京 210023

收稿日期:2017-12-04 修回日期:2018-03-09 出版日期:2018-08-20 发布日期:2018-08-22
通讯作者: 佘江峰 E-mail:gisjf@nju.edu.cn
作者简介:李佳祺(1992-),男,硕士生,研究方向为虚拟地理环境技术。E-mail:lijiaqitom@sina.com
基金资助:
国家自然科学基金（41371365）

Method for Generating Forest Landscapes Based on the Characteristics of Plant Distribution

LI Jiaqi, GAO Yiyuan, SHE Jiangfeng

School of Geographic and Oceanographic Sciences, Jiangsu Provincial Key Laboratory of Geographic Information Science and Technology, Nanjing University, Nanjing 210023, China

Received:2017-12-04 Revised:2018-03-09 Online:2018-08-20 Published:2018-08-22
Supported by:
The National Natural Science Foundation of China (No. 41371365)

摘要/Abstract

摘要： 在虚拟地理环境中如何快速地生成具有特定空间格局的森林景观是一个具有挑战的问题。现有的研究主要以模拟或随机的方式确定树木的位置，但难以反映每个树种的分布特征。本文提出了一种基于图的中性景观模型，根据指定的景观指数生成特定组成结构和空间配置的森林景观。模型将格网随机划分为若干不规则的区域，并将其转化为对应的区域邻接图，通过源节点的受限生长生成特定大小和形状的图斑。相比其他中性景观模型，该模型在可控性和灵活性上具有优势，能对每种类型的景观特征分别进行表达。最后根据模型生成的森林景观确定树木的位置与种类。本方法不仅能为植被场景的可视化提供合理的植被分布，而且能反映森林景观的空间分布特征，为虚拟森林环境中的林业规划决策以及植被分布规律认知提供一定的支持。

关键词: 虚拟地理环境, 中性景观模型, 植被分布, 区域邻接图

Abstract: The rapid generation of forest landscapes with specific spatial patterns in virtual geographic environment is a big challenge.Most of the previous studies specify the locations and attributes of trees using simulation and random synthesis methods.However,it is hard to reflect the distribution characteristics of each tree species for these methods.A graph-based neutral landscape model is proposed to generate forest landscapes with specific composition and spatial configuration based on landscape metrics set by users.The model converts a random map with many irregular regions into a region adjacency graph,and then generates patches with specific shape and size by merging neighbor nodes in the graph.Compared with other neutral landscape models,the proposed model has advantages of controllability and flexibility in expressing the landscape characteristics of different classes separately.Finally,based on the forest landscapes served as vegetation distribution maps,the positions and types of trees are determined.The proposed method can not only provide reasonable tree distributions for visualization of large-scale forests,but also reflect the spatial pattern of forest landscapes.The proposed method can also provide a reference for forestry planning and ecology research in virtual forest environment.

Key words: virtual geographic environments, neutral landscape model, plant distribution, region adjacency graph

中图分类号:

P208

李佳祺, 高亦远, 佘江峰. 基于植被分布特征的森林景观建模方法[J]. 测绘学报, 2018, 47(8): 1133-1140.

LI Jiaqi, GAO Yiyuan, SHE Jiangfeng. Method for Generating Forest Landscapes Based on the Characteristics of Plant Distribution[J]. Acta Geodaetica et Cartographica Sinica, 2018, 47(8): 1133-1140.

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基于植被分布特征的森林景观建模方法

Method for Generating Forest Landscapes Based on the Characteristics of Plant Distribution

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