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地理学报  2004 

广域空间尺度上植被净初级生产力的精确推算

DOI: 10.11821/xb200401010, PP. 80-87

Keywords: 生态过程模型,遥感和GIS数据,NPP

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Abstract:

作者介绍了使用遥感、GIS数据和BEPS生态过程模型推算植被净初级生产力(NPP)的方法。为了准确推算北海道地区NPP,我们改进了BEPS模型,而且使用了高质量GIS数据作为模型的输入数据。通过计算得出1998年北海道NPP的平均值为644gC/m2,总量为0.078GtC。我们还进行了模型输入数据质量对应用生态过程模型推算NPP的精度影响测试。结果表明,高质量的GIS输入数据可以提高NPP推算精度16.6%~39.7%。

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