利用GIS工具测定树木圆盘年轮的方法  

Measuring stem disk rings using GIS tools

作　　者：孟盛旺 周光[1] 于健[1] 周华[1] 刘琪璟[1] 

机构地区：[1]北京林业大学林学院,北京100083

出　　处：《生态学杂志》2017年第6期1746-1751,共6页Chinese Journal of Ecology

基　　金：国家高技术研究计划项目(2013AA122003)资助

摘　　要：树木圆盘年轮宽度测定是研究树木生长过程、森林生产力的重要基础,也是测树学中至关重要的一项技能。为简洁高效地测定圆盘年轮宽度,本文介绍了3种借助图像处理软件测定年轮宽度的方法。该方法基于扫描或拍照后的圆盘图像,利用地理信息系统软件对年轮坐标信息进行提取,根据两点之间距离公式计算各年轮宽度。此法不仅可以提高测量精度,而且成本低廉,在不具备专业年轮测定仪器或软件时,更有利于发挥其作用。Tree-ring width measurement is not only an important basis for studying tree growth process and forest production, but also a crucial skill in forest measurement. The objective of this study was to propose three methods which take advantage of image processing software for measur- ing ring widths of stem disk. Based on high-resolution image scanned or took by camera, coordi- nate information was extracted with the help of geographic information system （GIS）. The ring widths were then computed as the distance between two points. This approach could not only im- prove the measuring accuracy, but also make the measurement more cost-effective. In addition, it is especially practical when specialized instruments are not available.

关 键 词：数字图像 圆盘 年轮宽度 地理信息系统 

分 类 号：S718.4[农业科学—林学]