农业现代化研究2012，Vol.33Issue(4)：415-419,5.
中国稻谷生产的重心演变路径及偏移分析
Analysis of Track and Variatiou of Paddy Production Gravity Centre of China from 1949 to 2009
摘要
Abstract
Movement path and offset distance of the planting area, production, yield per unit gravity centre was studied by using paddy planting area, production and yield per unit of 31 provinces (cities,autonomous regions) data from 1949 to 2009. The results displayed that: (1) the gravity centre of paddy planting area and production has been moving to northeast from 1949 to 2009. (2) The track of paddy yield per unit gravity centre moved to east before 1970's and move back after that in the north-south direction; In the east-west direction, the range movement of paddy yield per unit gravity centre fluctuated rise-decline between about 33-34° N. (3) By comparing the offset distance of gravity centre, the variation of paddy yield per unit gravity centre was the largest, followed by the yield every year, while the excursion distance of paddy plant area was the least; by comparing the offset direction, the years of moving to the northeast and southwest more than move to the southeast and northwest, it indicated that the imbalance of paddy production in the northeast and southwest was more senous, (4) Plant area and production of paddy change faster in the south-north direction than the east-west direction, while the paddy yield per unit change faster in the east-west direction than the south-north direction.关键词
稻谷生产/重心模型/移动轨迹/偏移距离Key words
paddy production/ gravity centre model/ movement path/ offset distance.分类
农业科技引用本文复制引用
王连喜,赵晶,李琪,吴荣军,耿秀华..中国稻谷生产的重心演变路径及偏移分析[J].农业现代化研究,2012,33(4):415-419,5.基金项目
国家软科学研究项目"气候变化背景下我国的粮食安全评估及其适应对策研究"(编号:2009GXS5B091) （编号:2009GXS5B091）
江苏省高校自然科学研究面上.项目"气候变化背景下江苏省水稻高温热害模拟研究"(编号:11KJB2100004). （编号:11KJB2100004）
