基于Landsat影像和不规则梯形方法遥感反演延安城市森林表层土壤水分
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张新平,乔治,李皓,闫杰,张芳芳,赵栋锋,王得祥,康海斌,杨航,冯扬
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Remotely Sensed Retrieving the Surface Soil Moisture of Yan’an Urban Forest based on Landsat Image and Trapezoid Method
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Xinping Zhang,Zhi Qiao,Hao Li,Jie Yan,Fangfang Zhang,Dongfeng Zhao,Dexiang Wang,Haibin Kang,Hang Yang,Yang Feng
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表2 基于延安城市森林的Landsat系列卫星数据获取的TOTRAM与OPTRAM模型的参数（非线性边界）
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Table 2 TOTRAM and OPTRAM parameters obtained for the Yan’an urban forest based on Landsat series satellite data （Nonlinear edges）
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| 卫星 | 模型 | 边界类型 | 曲线方程 | R 2 | | L7 | TOTRAM (x=NDVI) | 干燥边界 | y=317.903 1+69.034 2x-317.974 0x 2+476.945 9x 3-268.520 0x 4 | 0.977 5 | | 湿润边界 | y=302.832 9-14.042 2x+106.471 7x 2-244.677 6x 3+149.357 9x 4 | 0.982 8 | | L7 | OPTRAM (x=NDVI) | 干燥边界 | y=0.993 3-12.763 1x+70.953 1x 2-128.957 4x 3+82.146 5x 4 | 0.972 2 | | 湿润边界 | y=0.044 9+21.923 2x-83.412 7x 2+156.310 0x 3-87.360 2x 4 | 0.996 0 | | L8 | TOTRAM (x=NDVI) | 干燥边界 | y=317.182 8-44.295 1x+197.230 6x 2-325.459 7x 3+156.739 9x 4 | 0.649 7 | | 湿润边界 | y=304.781 3+39.125 8x-265.385 1x 2+567.742 2x 3-412.209 7x 4 | 0.852 4 | | L8 | OPTRAM (x=NDVI) | 干燥边界 | y=0.179 2+1.727 8x+7.473 8x 2-29.221 2x 3+31.030 1x 4 | 0.760 3 | | 湿润边界 | y=2.220 9-9.448 2x+76.920 1x 2-180.963 7x 3+151.225 9x 4 | 0.960 3 |
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