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绿化覆盖率是衡量城市环境质量的主要指标之一，获取城市绿化覆盖信息常用的方法是全野外人工普查。本文较详细的论述了用彩红外航空影像进行城市绿化覆盖调查的方法，并对这两类调查方法进行了比较。
Green coverage is one of the main indicators to measure the quality of urban environment. The most commonly used method to get information on urban greening is the all-out manual survey. This paper discusses in more detail the method of urban greening coverage survey using color infrared aerial images and compares the two methods.