基于空间信息重构技术的东北三省大豆时空演变研究(1980—2010年)  

A STUDY ON SPATIO-TEMPORAL CHANGE OF SOYBEANS DISTRIBUTION IN NORTHEAST CHINA USING A CROSS-ENTROPY METHOD

作　　者：唐鹏钦[1] 陈仲新[1] 刘珍环 杨鹏[1] 姚艳敏[1] Tang Pengqin;Chen Zhongxin;Liu Zhenhuan;Yang Peng;Yao Yanmin(Key Laboratory of Agricultural Remote Sensing,Ministry of Agriculture/Institute of Agricultural Resources and Regional Planning,Chinese Academy of Agricultural Sciences,Beijing 100081,China;Guangdong Provincial Key Laboratory of Urbanization and Geo-simulation,School of Geography and Planning Sun Yat-sen University,Guangzhou,Guangdong 510275,China)

机构地区：[1]中国农业科学院农业资源与农业区划研究所/农业农村部农业遥感重点实验室,北京100081 [2]中山大学地理科学与规划学院国土资源与环境系,广东广州510275

出　　处：《中国农业资源与区划》2018年第9期62-73,共12页Chinese Journal of Agricultural Resources and Regional Planning

摘　　要：[目的]东北三省是我国大豆生产的重要基地,也是国家种植结构调整的重点区域。研究分析了1980—2010年东北三省大豆时空演变特征,为合理制定种植结构调整政策、加快推进农业供给侧结构性改革提供科学的空间信息参考。[方法]综合卫星遥感技术和空间信息重构模型优势,基于交叉信息熵方法,构建了作物空间信息重构模型SPAM-China,对1980—2010年东北三省大豆种植空间分布、时空演变、重心迁移等进行了研究。[结果] 1980—2010年东北三省大豆种植区域小幅增加,大豆种植面积栅格数量从6703个增加至7 214个,松嫩平原、三江平原以及吉林省中部地区是东北三省的大豆主产区;种植面积大幅增加,单位栅格面积增加1 000hm2以上的栅格数量增加明显,面积增加区域主要位于北纬47°～50°之间和东经125. 5°～131°之间;东北三省大豆种植面积重心分别向东迁移106. 20km,向北迁移208. 57km,辽宁省、吉林省大豆种植面积重心南移,黑龙江省基本保持不变。[结论] 1980—2010年东北三省大豆种植面积空间分布小幅增加,但时空变化特征显著,种植面积重心向北向东迁移。Northeast region is an important soybeans production base and region where agricultural planting structure needs to be adjusted.This study analyzed spatio-temporal change characteristics of soybeans in Northeast China during 1980-2010 so as to provide scientific guidance on making decisions for crop planting structure adjustment and supply-side structural reform.By taking account of advantages of remote sensing technique and spatial information model,a crop spatial information allocation model(SPAM-China)was developed based on cross-entropy theory,and then spatial distributions of soybeans,spatio-temporal change,crop center movement were investigated.During 1980-2010,soybeans planting area in Northeast China slightly increased and the number of soybeans girds increased from 6 703 to 7 214.Songnen plain,Sanjiang plain,Central Jilin province are the main soybeans production regions.The planting area had increased significantly,and the number of grids with a grid area of more than 1 000 hm2 had increased significantly.Soybeans area was increased between 47 to 50 degrees north latitude and 125.5 to 131 degrees east longitude;The gravity center of soybeans was moving to the east by 106.20 kilometers and to the north by 208.57 kilometers,among which those of Liaoning and Jilin provinces were moving north and Heilongjing kept relatively stable.During 1980-2010,there was a minor increase for sobyeans planting area in Northeast China but significant spatio-temporal change.The gravity of center of soybeans planting area was moving northeast.

关 键 词：东北三省 大豆 交叉信息熵 时空演变 重构 

分 类 号：S565.1[农业科学—作物学]