被动微波遥感近地表土壤冻融状态数据产品对比及分析
邵婉婉, 张廷军

Comparison and analysis of the near-surface soil freeze/thaw status datasets obtained by passive microwave remote sensing
Wanwan SHAO, Tingjun ZHANG
图1 1987—2008年平均冻结首日、平均冻结终日和平均冻结天数平均变化趋势
Fig.1 Annual variations of the average onset (a, b, c, d) and offset of soil frozen (e, f, g, h) and the number of frozen days (i, j, k, l) for near-surface soil measured (a, e, i), simulated with single index algorithm (b, f, j), simulated with double index algorithm (c, g, k) and simulated with decision tree algorithm (d, h, l) across China, 1987—2008