《Table 2 The quantitative change of cultivated land in western Jilin province from 1990 to 2015》

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《吉林省西部耕地变化与“旱改水”时空特征研究数据集(1990–2015)》

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During the period from 1990 to 2015，the changes in cultivated land in western Jilin province had obvious spatial and temporal heterogeneity，and there was a continuous increase.From 1990 to 2000，cultivated land increased by 1，301.92 km2，with a rate of increase of 130.19 km2/a.The increased area was mainly concentrated in the western and central eastern part of the study area.From 2000 to 2010，the rate of increase slowed down from754.73 km2 to 75.47 km2/a.The rate of increase of cultivated land in 2010–2015 was further slowed down，with a net increase of 104.82 km2，and a rate of increase of 20.96 km2/a.During the period 1990–2015，the area of paddy fields in western Jilin province increased by51.71%，and the growth rate reached 45.58 km2/a（Table 2）.Among the net increase in paddy field area，the proportion from dry farmland gradually increased，with the trend of conversions from dry farmland to paddy field also gradually increasing.