以湖北省荆州市1997~2004年耕地数据为基础和平台,运用灰色预测GM(1,1)模型,探讨耕地数量动态变化,为可持续发展规划提供参考。结果表明,GM(1,1)模型对荆州市耕地资源数量的历史趋势拟合程度较高,预测结果符合荆州耕地数量变化规律。荆州市耕地面积在未来几年内仍将呈现出持续减少的趋势。因此保护耕地资源,合理利用和保护耕地都是刻不容缓的任务。
With the farmland data of Jingzhou City in Hubei Province during 1997-2004 as base and platform,based on gray forecast model GM (1,1), the dynamic changes of farmland in the amount are explored to offer some reference for sustainable use planning of land. the results showed,model GM (1,1) fits a higher degree to the historical trends of farmland resources number in Jingzhou City,the forecast results also meet the amount changes of farmland. In the next few years,the area of farmland in jingzhou city will continue a decreasing trend. Therefore,protecting farmland resources,the rational use and protection of farmland are imperative tasks.