中文摘要：

研究图们江流域的耕地变化对加强图们江流域土地利用调控与管理有重要作用.以Landsat MSS/TM/OLI遥感影像为数据源,基于GIS软件,利用转移矩阵、统计分析等方法,计算图们江流域耕地变化情况和耕地相对转化情况,分析图们江流域1990-2015年共计25年间的耕地面积时空变化规律.结果表明：图们江流域的耕地广泛分布在中游区域,尤其旱地面积显著大于水田的面积,在25年间耕地总面积先增加后减少.1990—2015年,图们江上游耕地面积呈缓慢增长趋势,但后十五年增长速度高于前十年;图们江中游耕地面积前十年呈快速增长趋势,后十五年缓慢下降;而图们江下游25年内耕地面积变化不显著.1990—2015年,图们江流域水旱地结构发生了相互转换,水田向旱地的转化量大于旱地向水田的转化量.

英文摘要：

The study of cultivated land change in Tumen river basin plays an important role in strengthening the regulation and management of land use in Tumen river basin. Based on GIS software and with remote sensing images of Landsat MSS/TM/OLI as the data source,this paper calculates the variation and the relative transformation of cultivated land in Tumen river basin using the methods of transition matrix and statistical analysis,and analyzes the 25-year spatio-temporal variation rules of cultivated land area in Tumen river basin from 1990 to 2015.The result shows that： The cultivated land is widely distributed in the middle reaches of Tumen river basin,especially the area of dry farmland is significantly higher than that of paddy field; And the total area of cultivated land increased first and then decreased among the 25 years. From 1990 to 2015,the area of cultivated land increased gradually in the upper reaches of the Tumen river,and the growth rate of the latter fifteen years was higher than the previous ten years. While the cultivated land area in the middle reaches of Tumen river showed a rapid growth trend in the first ten years,and declined slowly in the last fifteen years. However,the area in the lower reaches has not changed significantly within the 25 years. From 1990 to 2015,the structure of paddy and dry farmland in Tumen river basin was of a mutual conversion—the transformation of paddy-to-dry is much higher than that of paddy-to-dry.