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Position: Home > Articles > Research progress in grassland fractional coverage estimation methods Pratacultural Science 2009,26 (12) 30-36

草地覆盖度测算方法研究进展

作  者:
温庆可;张增祥;刘斌;乔竹萍
单  位:
中国科学院遥感应用研究所
关键词:
草地覆盖度;经验模型;混合像元分解;亚像元;遥感;照相法
摘  要:
草地覆盖度作为一个重要的生态学参数被用在许多气候模型和生态模型中,测算是否精准,很大程度上决定了相关科学研究的精度。归纳了草地覆盖度测算的多种方法,整合了众多学者对草地覆盖度测算方法分类的认识差异,重点针对广泛使用的遥感技术,按照遥感的基本原理对诸多遥感估算法重新归类,理清了遥感估算草地覆盖度的基本思路。同时,分析了各种草地覆盖度测算方法的机理、优缺点和适用范围,为草地覆盖度研究方法选择提供理论依据,最后指出了草地覆盖度测算的发展趋势和研究重点。
译  名:
Research progress in grassland fractional coverage estimation methods
作  者:
WEN Qing-ke,ZHANG Zeng-xiang,LIU Bin,QIAO Zhu-ping(Institute of Remote Sensing Applications,Chinese Academy of Sciences,Beijing 100101,China)
关键词:
grassland fractional coverage;empirical model;pixel unmixing;sub-pixel;remote sensing;photographic method
摘  要:
As an important ecological variable,the grassland fractional coverage is used in meteorological and ecological analysis and modeling.The precision of the grassland fractional coverage estimation deeply affects the precision of related studies.A number of methods which are used to estimate the grassland fractional coverage and the different opinions were reviewed and analyzed.Focusing on the remote sensing technology,the existing remote sensing based estimating methods were reclassified in order to clear the basic thoughts for estimating the grassland fractional coverage.Moreover,the features,advantage and shortage of each method were analyzed as well.

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