基于FORECAST模型的油茶林分可视化生长模拟  

Stand visualization and growth simulation of Camellia oleifera based on FORECAST model

作　　者：代劲松[1] 曹林[1] 陈雷[1] 张亚楠[1] 

机构地区：[1]南京林业大学森林资源与环境学院,南京210037

出　　处：《林业科技开发》2012年第4期53-57,共5页China Forestry Science and Technology

基　　金：南京林业大学大学生科技创新项目"基于HJ1A遥感影像数据的植被信息提取及区域NPP反演"(编号:201009)

摘　　要：油茶是我国特有的木本油料树种,也是世界四大木本食用油料树种之一,以生态模型可视化模拟油茶生长规律对研究其抚育栽培模式及可持续经营管理决策有着重要意义。通过比较分析相关领域文献,整理收集了贵州、湖南、江西、福建、浙江五省60年油茶林分生长数据,借助林分水平森林生态系统模拟模型FORECAST模拟油茶纯林50年生长变化规律。模拟结果包括林分尺度的林分平均高、平均冠幅、林分株密度、林分果实生物量参数,及单木尺度的林木胸径、树高、枝下高、冠幅参数。在模拟预测油茶生长参数的基础上,本研究还借助模型可视化技术,三维再现了5年、15年、25年、45年生油茶林分空间结构,用以验证模型及辅助决策。结果表明模型FORE-CAST拟合油茶林分生长曲线效果较好,其输出参数可视化也逼真再现了林分尺度纯林场景,较好的验证了数据。Camellia oleifera is a chinese endemic woody oil tree species and one of the world＇ s four major woody edible oil trees, stand scale forest ecosystem model for simulating C. oleifera law of stand growth and visualization of simulative results for tending cultivation and sustainable management have important meaning. In this study, the C. ol,,ifera stand growth data of 60 years from literatures were arranged in Guizhou, Hunan, Jiangxi, Fujian, Zhejiang provinces, with the help of stand scale forest ecosystem simulation model FORECAST, C. oleifera pure stand growth law of 50 years were simulated. The re- suits included stand level parameters, mean height, mean crown dimensions, stand density, stand ：fruit biomass as well as individual tree level parameters, diameter at breast height, height, height of crown base, crown di~,meter. On the basis of the growth parameters of simulation and prediction, this paper also represented the tree-dimensional stand spatial profile of 5th year, 15th year, 25th year and 45th year by visualization technology for validating results and aiding decision-making. It was demonstrated that FORECAST model fit C. oleifera stand growth curve better, the visualization oF output parameters also realistically represented the pure stand scene of stand scale and was better to validate data.

关 键 词：油茶 FORECAST 林分可视化 GOOGLE EARTH 

分 类 号：S792.15[农业科学—林木遗传育种]