Table 6 The parameters for the SED in 1990, 2000, 2010 and 2020.

From: Spatiotemporal changes of cultivated land utilization in black soil region, China based on geo-information Tupu

Year

CenterX (m)

CenterY (m)

XStdDist (m)

YStdDist (m)

Rotation (°)

1990

1,410,480.60

5,186,884.43

304,824.20

269,790.20

48.07

2000

1,427,908.99

5,155,645.12

244,417.20

280,061.80

37.788

2010

1,449,880.75

5,136,579.29

265,288.50

216,928.30

49.950

2020

1,436,074.20

5,159,425.06

268,027.30

256,065.50

71.263

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