近30 a中国叶面积指数变化趋势的不确定性评估

桑宇星,刘刚,江聪,任舒艳,朱再春

Uncertainty Assessment of the Trend of China's Leaf Area Index in the Past 30 Years

Yuxing Sang,Gang Liu,Cong Jiang,Shuyan Ren,Zaichun Zhu

表2 中国生长季LAI趋势及波动对比 (趋势：（10-3m2/m2·a）)

Table2 Comparison of trends and interannual variations of growing season mean LAI in China

年份 MODIS GLOBMAP GLASS GIMMS LAI均值 1982~2000 LAIFVa趋势 - 1.9±0.6* 10.5±2.6* 6.5±2.6 6.5±1.4* LAILV趋势 - 1.8±1.3 7.8±2.9* 5.6±1.4* 5.2±1.5* 年际波动R2 - 0.7 0.8 0.9 0.9 2000~2011/2000~2015b LAIFV趋势 3.0±3.2 2.9±2.9 6.3±2.7* 8.0±2.7* 7.9±2.0* LAILV趋势 14.8±1.9* 18.6±1.7* 8.5±3.0* 7.9±1.6* 12.1±2.1* 年际波动R2 0.79a 0.4 0.9 0.8 0.8 1982~2011/1982~2015 LAIFV趋势 - 4.7±0.5* 14.6±1.1* 4.8±0.8* 8.2±0.5* LAILV趋势 - 4.4±0.7* 13.8±1.1* 4.3±0.5* 7.4±0.5* 年际波动R2 - 0.3 0.9 0.9 0.9