论文部分内容阅读
以广东省新兴县为例,基于2010~2013年土地利用变更数据和耕地质量等别更新评价数据,分析了新兴县耕地数量、质量及其空间变化特征和变化原因。结果表明,从数量上看,2010~2013年新兴县耕地数量呈现减少的趋势,耕地利用动态变化度相对较小,耕地增加主要来源于有林地,耕地减少以建设用地为主;从质量上看,2010~2013年新兴县耕地质量整体呈现逐渐升高的趋势,区域耕地质量等别变化差异明显;从变化原因上看,土地开发、建设占用和耕地质量建设是耕地变化的3大主要原因。
Taking Xinxing County, Guangdong Province as an example, the evaluation data were updated based on the land use change data and the cultivated land quality difference between 2010 and 2013, and the cultivated land quantity, quality, spatial variation characteristics and reasons of change in Xinxing County were analyzed. The results showed that the quantity of cultivated land in Xinxing County decreased from 2010 to 2013, and the dynamic change of cultivated land use was relatively small. The increase of cultivated land mainly came from afforestation land and the decrease of cultivated land was mainly from construction land. From the quality point of view , The quality of cultivated land in Xinxing County tended to increase gradually from 2010 to 2013, and the difference of cultivated land quality was obviously different. From the reason of change, land development, construction occupation and construction of cultivated land quality were the three major causes of the change of cultivated land.