基于库兹涅茨曲线的耕地集约利用对耕地实际产能的影响研究

发布时间：2018-01-24 15:12

本文关键词： 耕地集约利用耕地实际产能库兹涅茨曲线湖北省　出处：《长江流域资源与环境》2017年07期 　论文类型：期刊论文

【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。
[Abstract]:It is an important prerequisite for guiding the input of cultivated land and ensuring the national food security to accurately identify the response law of the actual productivity of cultivated land under different cultivated land intensive utilization levels. On the basis of theoretical analysis of the relationship with the actual productivity of cultivated land. The Kuznets curve model of cultivated land intensive utilization level and the actual productivity of cultivated land was constructed, and the secondary index area of standard farming system was used. The empirical study on urban scale in Hubei Province shows that the intensive utilization level of cultivated land and the actual productivity of cultivated land in hilly areas along the Yangtze River and Qinba Mountains of the basin show a inverted U curve. It is proved that the Kuznets curve model can effectively identify the response law of the actual productivity of cultivated land under different cultivated land intensive utilization levels, and compare the input level of cultivated land use with the corresponding critical value in each city. Xiangyang and other cities should improve the level of intensive use of cultivated land and adjust the input structure of cultivated land use, and give full play to the scale and structural benefits of intensive use of cultivated land, while cities such as Suizhou should strengthen the optimization of input structure of cultivated land use. This study can provide the decision basis for optimizing the input structure of cultivated land use and formulating the policy for the utilization and protection of differentiated cultivated land.
【作者单位】：中国地质大学(武汉)公共管理学院;中国地质大学(武汉)国土资源部法律评价工程重点实验室;南京大学地理与海洋科学学院;
【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)~~
【分类号】：F224;F323.211
【正文快照】： 粮食安全一直以来都是关系我国国民经济发展、社会稳定和国家自立的全局性重大战略问题。随着工业化、城镇化的持续推进以及人口增加和人民生活水平的提高,粮食消费需求将呈刚性增长,而耕地减少、水资源短缺等对粮食生产的掣肘却日益突出[1,2]。在这样的现实背景下,增加耕地投

【相似文献】