国产卫星在植被覆盖度遥感估算中的应用进展
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摘要
植被覆盖度是描述地表生态的一个重要参数,利用遥感技术能够快速而准确地获得地表植被覆盖度参数。遥感能够反映不同空间尺度的植被覆盖信息及其变化趋势,是获取区域及全球植被覆盖度参数的一个重要手段。环境一号卫星CCD数据兼具中等空间分辨率、较宽的覆盖范围和较高的时间分辨率等优势,适应于区域尺度乃至大区域较为精细的植被覆盖度连续观测。高分系列卫星、资源三号卫星空间分辨率高,可以用来对重点区域或脆弱区域进行深入研究,以确保解译的准确性,必要时也可以用于对中、低空间分辨率数据的检验。本文总结了利用国产卫星数据进行植被覆盖度估算的总体情况,重点分析了估算方法以及存在的问题,最后,针对目前研究中存在的问题,讨论了基于国产卫星数据的植被覆盖度遥感估算研究的发展趋势。
引文
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