基于TVDI的内蒙古草地干旱变化特征分析

程伟,辛晓平

Analysis of Spatial-Temporal Characteristics of Drought Variation in Grassland Area of Inner Mongolia Based on TVDI

CHENG Wei,XIN XiaoPing

表1 2007年Ts-EVI特征空间干湿边拟合方程

Table 1 The dry and wet edges in Ts-EVI space estimated by linear regression for 2007

日序Day of year 干边Dry edge 湿边 Wet edge 2007001 Tsmax = -82.87x+11.56 (R2=0.83) Tsmin= 40.12x-34.74 (R2=0.70) 2007017 Tsmax = -90.54x+15.04 (R2=0.80) Tsmin= 20.20x-26.08 (R2=0.44) 2007033 Tsmax = -97.38x+15.04 (R2=0.81) Tsmin= 33.15x-25.03 (R2=0.74) 2007049 Tsmax = -145.5x+34.04 (R2=0.85) Tsmin= 49.65x-26.43 (R2=0.77) 2007065 Tsmax = -172.65x+37.75 (R2=0.87) Tsmin= 61.21x-24.82 (R2=0.51) 2007081 Tsmax = -203.46x+49.17 (R2=0.85) Tsmin= 31.51x-11.72 (R2=0.43) 2007097 Tsmax = -148.72x+48.57 (R2=0.90) Tsmin= 64.58x-11.61 (R2=0.71) 2007113 Tsmax = -140.01x+56.65 (R2=0.73) Tsmin= -13.78x+9.54 (R2=0.16) 2007129 Tsmax = -32.86x+43.75 (R2=0.83) Tsmin= 41.38x+0.76 (R2=0.78) 2007145 Tsmax = -42.46x+52.65 (R2=0.92) Tsmin= -2.33x+20.41 (R2=0.03) 2007161 Tsmax = -41.11x+56.77 (R2=0.95) Tsmin=-7.85x+23.16 (R2=0.29) 2007177 Tsmax = -39.30x+58.04 (R2=0.96) Tsmin= -5.74x+24.22 (R2=0.13) 2007193 Tsmax = -36.77x+55.14 (R2=0.95) Tsmin= -2.93x+20.76 (R2=0.03) 2007209 Tsmax = -39.59x+58.42 (R2=0.94) Tsmin= -4.29x+22.52 (R2=0.16) 2007225 Tsmax = -33.28x+50.68 (R2=0.93) Tsmin= -11.03x+25.73 (R2=0.45) 2007241 Tsmax = -39.86x+50.00 (R2=0.93) Tsmin= 4.31x+16.25 (R2=0.05) 2007257 Tsmax = -46.32x+44.40 (R2=0.90) Tsmin= 7.98x+7.82 (R2=0.21) 2007273 Tsmax = -41.59x+35.04 (R2=0.93) Tsmin= 52.85x-3.67 (R2=0.69) 2007289 Tsmax = -110.85x+37.67 (R2=0.90) Tsmin= 27.34x-9.22 (R2=0.34) 2007305 Tsmax = -77.21x+23.40 (R2=0.84) Tsmin= 32.70x-14.35 (R2=0.53) 2007321 Tsmax = -96.06x+17.73 (R2=0.84) Tsmin= 36.85x-30.38 (R2=0.71) 2007337 Tsmax = -78.62x+11.81 (R2=0.85) Tsmin= 29.30x-30.69 (R2=0.63) 2007353 Tsmax = -84.95x+14.68 (R2=0.88) Tsmin= 29.17x-31.44 (R2=0.56)