区域耕地质量变化研究

Research on Regional Cultivated Land Quality Change

为研究区域耕地质量变化的动因和影响程度,将耕地按质量变化原因划分为新增、减少、项目建设和渐变4种变化类型区进行分析,并用农用地分等因素法对郑州市耕地质量进行更新评价。结果表明:郑州市在研究期内耕地质量略有上升,由于耕地数量减少,产能呈下降态势;不同类型耕地变化对区域耕地质量的影响大小依次为渐变>减少>新增>项目建设;郑州市通过新增耕地和项目建设能够维持区域耕地质量平衡,但是未能维持产能平衡。通过类型区分析区域耕地质量变化的机理,能准确分析各类型区质量变化和整体质量变化的关系,也能够为管理者制定耕地质量与产能保护提供政策建议,具有重大的应用价值。

In order to study motivation and influence degree of regional cultivated land quality change,cultivated land was divided into four types of change areas according to reasons of quality change:new,reduced,project construction and gradual change.Results showed that,quality of cultivated land increased slightly in Zhengzhou during study period,and productivity decreased due to decrease of cultivated land.Impact of type of cultivated land change on quality of regional cultivated land was in the order of gradual change>decrease>increase>land construction project.Zhengzhou City was able to maintain quality of regional cultivated land through new cultivated land and project construction,but failed to maintain production capacity.By analyzing mechanism of regional cultivated land quality changes in different types of areas,relationship between quality changes in different types of areas and overall quality changes could be accurately analyzed.It could provide policy suggestions for managers to develop cultivated land quality and productivity protection,which has great application value.