| GIS在中国粮食单产空间变化研究中的应用 |
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| 引用本文： | 党安荣,阎守邕,王世新.GIS在中国粮食单产空间变化研究中的应用[J].地理科学,1999,19(3):205-210. |
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| 作者姓名： | 党安荣 阎守邕 王世新 |
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| 作者单位： | 1. 清华大学建筑学院GIS实验室,北京,100084
2. 中国科学院遥感所GIS研究室,北京,100101 |
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| 摘 要： | 依据１９８５与１９９４年两个年份的分县粮食生产统计数据，运用ＧＩＳ为分析手段，从空间变化特征、变化成因及变化趋势三个方面，着重对１９８４年以来我国粮食单产的空间变化进行了定量研究。结果表明：在过去十年里，我国粮食单产增长占绝对优势，其中北方地区增产强度较大、南方地区下滑现象明显；生产条件的改善对北方粮食单产的增长有重要作用，比较利益的驱使导致南方粮食单产下滑。
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| 关 键 词： | 中国 粮食单产 空间变化 |
GIS APPLICATION IN SPATIAL VARIATION STUDYING ON CHINA'S GRAIN YIELD |
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| Dang Anrong,Yan Shouyong,Wang Shixing.GIS APPLICATION IN SPATIAL VARIATION STUDYING ON CHINA'S GRAIN YIELD[J].Scientia Geographica Sinica,1999,19(3):205-210. |
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| Authors: | Dang Anrong Yan Shouyong Wang Shixing |
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| Abstract: | Using GIS as an analyzing tool, the characteristics, reasons, and trends of
spatial variation of China's grain yield are studied quantitatively based on the national grain
production database ( by county unit ) in two periods (in 1985 and 1994). The result is that the
increase of China's grain yield in the past decade was very obvious, especially in north area,
while the decrease of grain yield was exist in some of the south area of China. The increase of
grain yield in north area was mainly come from the improvement of grain production condition
while the decrease of grain yield in south area was driven by the comparison profits. |
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| Keywords: | GIS |
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