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作 者:侯现慧[1,2] 王占岐[1] 杨俊[3] 刘婧鸣[1,2]
机构地区:[1]中国地质大学(武汉)公共管理学院,湖北武汉430074 [2]中国地质大学(武汉)国土资源部法律评价工程重点实验室,湖北武汉430074 [3]南京大学地理与海洋科学学院,江苏南京210093
出 处:《长江流域资源与环境》2017年第7期992-1000,共9页Resources and Environment in the Yangtze Basin
基 金:国家自然科学基金项目(71673258;41601592);中国地质大学(武汉)国土资源部法律评价工程重点实验室开放基金项目(CUGFP-1608);中国博士后科学基金项目(2015M581775)~~
摘 要:准确识别不同耕地集约利用水平下耕地实际产能的响应规律是指导耕地利用投入和保障国家粮食安全的重要前提。在利用土地报酬递减规律对耕地集约利用水平与耕地实际产能关系进行理论分析的基础上,构建耕地集约利用水平与耕地实际产能的库兹涅茨曲线模型,利用标准耕作制度二级指标区,对湖北省进行了市域尺度的实证研究。研究结果表明:鄂豫皖丘陵山区、沿江平原区和盆周秦巴山区的耕地集约利用水平和耕地实际产能已呈现倒U曲线关系,证实库兹涅茨曲线模型可以有效识别不同耕地集约利用水平下耕地实际产能的响应规律。将各市耕地利用投入水平与相应临界值进行对比,得出襄阳等市应提高耕地集约利用水平和调整耕地利用投入结构,发挥耕地集约利用的规模效益和结构效益,而随州等市则需加强耕地利用投入结构优化,提升耕地集约利用的结构效益。该研究可为优化耕地利用投入结构和制定差异化耕地利用与保护政策提供决策依据。Accurate identification of the response of cultivated land productivity under different cultivated land intensive use level is an important prerequisite for guiding the input of cultivated land use and ensuring national food security. Based on the land law of diminishing,the relationship between land utilization level and the productivity of cultivated land were analyzed together with an empirical research on the urban scale for Hubei province by using the national standard of secondary indicators and constructing the Kuznets curve model of land intensive use and cultivated land productivity. The results showed that Kuznets curve model can effectively identify the response rules of different cultivated land utilization level and land productivity,and the cultivated land intensive use level and productivity of E-Yu-Wan hills and mountains,the plains along the river and the zone of Qinba mountains around the basin exists Kuznets inverted U curve. From the comparison between the corresponding critical value and the input level of cultivated land use,we can conclude that,for Xiangyang cities,it is necessary to enhanve structure effective in the cultivated land intensive use; while for Suizhou cities,it is necessary to strengthen the cultivated land use input structure,in order to improve the structure effective in the cultivated land intensive use. This study is expected to provide decision-making basis for optimizing the structure of cultivated land use input and making different policy in land use and land protection.
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