基于大比例尺航片的树种识别及单株定位方法  

Tree Species Extraction and Individual Spatial Location Based on Large-scale Aerial Photo

作　　者：王晓杰[1] 范文义[1] 李明泽[1] 杨琳[1] 

机构地区：[1]东北林业大学,哈尔滨150040

出　　处：《东北林业大学学报》2013年第5期152-157,共6页Journal of Northeast Forestry University

基　　金：国家高技术研究发展计划(2012AA102001);国防科技工业局专项(E0305/1112/01/01)

摘　　要：为了提供凉水自然保护区内红松资源的数量和空间分布的基础信息,以黑龙江省凉水自然保护区的1∶2 000航片为基础数据,通过提取航片的灰度、纹理等信息数据,结合二类调查及角规点数据,运用分层分类的思想提取红松分类图,建立胸径(D)、胸径/林分平均胸径(D/Dg)与树冠冠幅的逐步回归模型约束单株立木的冠幅面积与周长,确定立木株数以及单株定位。利用角规点与影像样地对提取结果进行检验,精度分别为90.46%和82.74%。An experiment was conducted to provide the basic information of Pinus koraiensis forests＇ quantitative distribution and spatial distribution in Liangshui Nature Reserve by the air photos with the scale of 1 ： 2 000 in Liangshui Nature Reserve of Heilongjiang Province as essential data. The air photos＇ information data of gray scale and vein etc. combining with the data of forest management inventory and angle gauge were extracted to build to classification maps of P. koraiensis by hier- archical classification. The stepwise regression model of diameter at breast height （D）, diameter at breast height/average diameter at breast height of stand （D/Ds） and crown width were built to restrain single standing tree＇ s area and perimeter of crown width and determine the number of standing trees and finished single plant＇ s positioning. The accuracies are 90.46% and 82.74% by the plots of angle gauge and image, respectively.

关 键 词：大比例尺 航片 冠幅 树种提取 单株定位 

分 类 号：S757.2[农业科学—森林经理学] P231.1[农业科学—林学]