关键词: 地理国情监测, 地表覆盖分类成果, 错误率, 变化率, 质量特征

Abstract: After China has completed the database of general survey of geographical conditions, the focus of work has changed from general survey to monitoring. No matter in general survey or monitoring, it is always the key and difficulty to classify the surface cover accurately. In the stage of normalization monitoring, it is very important for production organization and quality control to master the main quality indicators of surface coverage classification results, summarize their change rate, change area distribution, types of changes and analyze the main factors affecting the quality.

Key words: geography national condition monitoring, surface coverage classification data, error rate, rate of change, the quality characteristics