基于城乡统筹背景下的重庆市耕地压力变化研究  

Study on the Pressure of Change of Cultivated Land in Chongqing Based on the Background of Urban and Rural Areas Overall Plan

作　　者：葛霖[1] 杜鹃[2] 高明[1] 韩晓飞[1] 黄勇[1] 

机构地区：[1]西南大学资源环境学院,重庆400716 [2]西南大学园艺园林学院,重庆400716

出　　处：《农机化研究》2012年第11期24-28,共5页Journal of Agricultural Mechanization Research

基　　金：国家"十二五"科技支撑计划项目(2012BAD14B18);环保部"水专项"项目(2012ZX071404-003)

摘　　要：为了揭示2007年城乡统筹以来重庆市耕地压力的变化情况,运用最小人均耕地面积、耕地复种指数、耕地压力指数、耕地利用强度模型,计算了重庆市2002-2010年最小人均耕地面积、耕地压力指数和耕地利用强度。结果表明,研究区耕地总量总体呈下降趋势,表现为先逐年减少后有所增加;人均耕地面积逐年减少,但2007年之后有变缓的趋势;粮食总产量和人均粮食量除2006年较低以外,其余年份基本稳定;研究期重庆市耕地压力指数大于1,耕地压力比较明显,2007年以后保持在1.14左右;耕地利用强度波动较大,2007年以后维持在0.9左右。可通过增加农业科技投入、加大农村土地综合整治力度和提高耕地利用强度等措施来降低耕地压力,确保粮食安全。To explore the pressure of change of cuhivated land in Chongqing since 2007 of the urban and rural areas o- verall plan. Minimum area of per capital cultivated land, multiple-crop index of cultivated land, pressure index of culti- vated land, use intensity of cultivated land model were chosen to calculate the change of them during 2002 -2010. The results showed that the total cultivated land had declined, and increased after the reduce of first year by year. The per capital area of cultivated land had decreased year by year, but the trend was slowly after 2007. The total output of grain and the average per capital＇s grain quantity were stable, besides lower in 2006. The pressure index of cultivated land was greater than 1 during the period in Chongqing, which remained about 1. 14 after 2007. The use intensity of cultivated land was volatile, which kept about 0.9 after 2007. Based on the study of pressure of cultivated land, measures that in- creasing investment of agricultural in science and technology, increasing the efforts of land comprehensive in rural, im- proving the use intensity of cultivated land, should be taken to reduce the pressure of cultivated land to ensure the food safety.

关 键 词：耕地压力 最小人均耕地面积 耕地利用强度 城乡统筹 

分 类 号：F301.24[经济管理—产业经济]