关键词: 小麦, 遥感, 空间格局, 空间自相关, 动态变化

Abstract: In order to reveal the regional characteristics and spatial patterns of dynamic change of wheat in recent years in Jiangsu province, this paper extracted wheat area data of different years in Jiangsu based on remote sensing techniques, and analyzed the regional changes and spatial patterns of wheat area by grid and spatial autocorrelation analysis. The results showed that there was a strong regional agglomeration effect on wheat planting area in Jiangsu province from 2011 to 2017, and the agglomeration degree and contiguous planting increased year by year. By 2017, high agglomeration area for wheat planting was centrally distributed in the north of Huaihe River and irrigation canal, low agglomeration area was mainly distributed in the south of the Yangtze River and west of Suzhou. Since 2013, the wheat planting was greatly reduced in southern Jiangsu, especially in Ningzhenyang hilly region. The same trend also occurred in Lixiahe river region of central Jiangsu, but the decreasing degree was more moderate. The wheat area in northern Jiangsu maintained relatively stable, although partially reduced in hilly region of Xuzhou and Lianyungang city. Overall, the wheat area of Jiangsu decreased since 2013, but the spatial pattern suitable for wheat production in Jiangsu took shape. The results provided scientific basis for future cropping structure adjustment and agricultural supply-side structural reform.

Key words: wheat area, remote sensing, spatial pattern, spatial autocorrelation analysis, dynamic change