研究目的:计量耕地过度性损失,界定耕地保护理性目标,破解耕地保护指标分配难题。研究方法:函数模拟法,模型计量法,多方案比较法和情景分析法。研究结果:中国1989—2006年之间耕地资源过度性损失达1930742.27hm2。研究结论:其一,倘若延续当前的经济发展和生态建设态势,即使土地管理部门压减耕地过度性损失,2020年的耕地红线1.20×108hm2必将在2009年年底突破;其二,倘若国家暂缓生态退耕,经济发展即使延续过去占用耕地的态势,2020年以前中国的耕地资源保护处于安全状态;其三,在国家暂缓生态退耕的前提下,从土地管理的首要使命判断,2020年全国耕地资源至少保有1.21×108hm2。
The purpose of the paper is to measure the excessive loss of cultivated land, define the rational target of cultivated land,and resolve the quota distribution issues of cultivated land protection. Methods employed include function simulation method, quantitative model method, the comparative method of multiple schemes and scene analysis method. The results show that the excessive loss of the cultivated land was 1930742.27 hectares from 1986 to 2006 in China. It is concluded that, firstly, if the present eco...