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遥感探测土地植被覆盖指数的准确度评估
引用本文:周忠轩,吴钢,邵国凡.遥感探测土地植被覆盖指数的准确度评估[J].应用生态学报,2004,15(1):36-38.
作者姓名:周忠轩  吴钢  邵国凡
作者单位:1. 中国科学院生态环境研究中心系统生态重点实验室,北京,100085
2. Department of Forestry and Natural Resources,Purdue University,West Lafayette IN 47907-1159,USA
基金项目:中国科学院“百人计划”支持项目,中国科学院重点创新项目(KZCX3 SW 42 3 ,KZCX2 40 5 ,RCEES990 3 )
摘    要:GIS数据的准确度一直是GIS应用的考虑事项。用虚例和实例揭示了土地植被覆盖指数的准确度与图像分类的准确度之间的复杂关系,并进一步用数学方式进行了解释。土地植被覆盖指数的准确度取决于图像分类准确度,但与分类总准确度没有直接关系。用户和产家准确度比总准确度对土地植被覆盖指数的准确度具有更直接的控制,所以在图像分类报告中不应被忽略为了保证土地植被覆盖指数的准确度,某土地类型的用户和产家准确度应该尽可能一致,同时要使得这两个准确度数值越高越好。

关 键 词:土地植被覆盖指数  图像分类  准确度评估  遥感探测  景观生态
文章编号:1001-9332(2004)01-0036-03
修稿时间:2002年10月23

Accuracy evaluation of land vegetative cover index by RS detection
ZHOU Zhongxuan ,WU Gang ,SHAO Guofan.Accuracy evaluation of land vegetative cover index by RS detection[J].Chinese Journal of Applied Ecology,2004,15(1):36-38.
Authors:ZHOU Zhongxuan  WU Gang  SHAO Guofan
Institution:Key Laboratory of Systems Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
Abstract:The accuracy of GIS data is important in GIS application. In this paper, a fictitious case and an example were used to discuss the relationship between accuracy of land vegetative cover index and accuracy of image classification, and this relationship was explained by mathematics. The accuracy of land vegetative cover index rested with the accuracy of image classification, but had no direct relations with total classification accuracy. User accuracy and producer accuracy had more direct control on the accuracy of land vegetative cover index than total classification accuracy; and hence, they could not be ignored in the image classification. To improve the accuracy of land vegetative cover index, user accuracy and producer accuracy of the same land type should be consistent to the greatest extent.
Keywords:Land vegetative cover index  Image classification  Accuracy evaluation  RS detection  Landscape ecology    
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