| 中国稻谷生产的重心演变路径及偏移分析 |
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| 引用本文： | 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. |
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| 作者姓名： | 王连喜 赵晶 李琪 吴荣军 耿秀华 |
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| 作者单位： | 南京信息工程大学江苏省大气环境监测与污染控制高技术研究重点实验室;南京信息工程大学环境科学与工程学院 |
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| 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);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:11KJB210004) |
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| 摘 要： | 本文利用1949-2009年全国31个省(市,自治区)稻谷种植面积、总产量及单产资料,分析全国稻谷种植面积重心、总产量重心以及单产重心的移动轨迹、偏移距离等。结果表明:(1)1949-2009年,稻谷种植面积重心、总产量重心,整体上均呈现出向东北方向移动的趋势。(2)稻谷单产重心偏移轨迹从东西方向来看,20世纪50、60年代先向东偏移,此后逐渐向西回归;从南北方向上来看,单产重心呈现波动上升、下降趋势,大约在33°N-34°N之间移动。(3)从重心总偏移距离来看,种植面积最小,总产量次之,单产最大;从偏移方向来看,三者均是向东北、西南方向偏移的年份居多,说明稻谷生产东北、西南方向的发展不平衡状态较西北、东南方向的严重。(4)稻谷种植面积和总产量在南北方向上的动态变化相对东西向的变化剧烈,而单产则是东西向的变化比南北向的变化剧烈。
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| 关 键 词： | 稻谷生产 重心模型 移动轨迹 偏移距离 |
Analysis of Track and Variation of Paddy Production Gravity Centre of China from 1949 to 2009 |
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| WANG Lian-xi,ZHAO Jing,LI Qi,WU Rong-jun and Geng Xiu-hua.Analysis of Track and Variation of Paddy Production Gravity Centre of China from 1949 to 2009[J].Research of Agricultural Modernization,2012,33(4):415-419. |
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| Authors: | WANG Lian-xi ZHAO Jing LI Qi WU Rong-jun and Geng Xiu-hua |
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| Institution: | 1,2(1.Jiangsu Key Laboratory of Atmospheric Environmental Monitoring and Pollution Control,Nanjing University of In formation Science & Technology,Nanjing,Jiangsu 210044,China;2.School of Environmental Science and Engineering,Nanjing University of Information Science & Technology,Nanjing,Jiangsu 210044,China) |
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| 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 serious. (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. |
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| Keywords: | paddy production gravity centre model movement path offset distance |
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