淮北平原农业区耕地面积时空格局演变与驱动力分析

发布时间：2018-02-04 22:35

本文关键词： 耕地面积时空格局驱动力主成分分析淮北平原农业区　出处：《南方农业学报》2017年01期 　论文类型：期刊论文

【摘要】：【目的】探索安徽淮北平原农业区耕地面积的时空格局演变及其驱动力,为保障区域耕地资源可持续利用与管理提供科学依据。【方法】根据2000~2013年相关统计资料,采用耕地动态度、耕地指数及耕地重心模型对淮北平原农业区的耕地面积时空格局演变进行研究,并运用主成分分析法对其耕地面积时空格局演变的驱动力进行分析。【结果】(1)2000~2013年淮北平原农业区总耕地面积及其大部分县(区)耕地面积小幅减少,其余部分市辖区耕地面积有一定增加;(2)淮北平原农业区的耕地在空间上呈西多东少的分布格局,2000~2013年耕地重心总体上从西北向东南方向转移,但迁移幅度不明显,并未影响研究区西多东少的分布格局;(3)主成分分析结果表明淮北平原农业区耕地面积时空格局演变的主要驱动力为社会经济与城镇化、农业生产能力和灾变。【建议】加强现有耕地资源的保护力度,合理开发后备土地资源;依靠科技提升农业生产能力,完善土地管理政策,保障农户切身利益;控制人口数量,树立耕地资源危机意识。
[Abstract]:[objective] to explore the temporal and spatial pattern evolution and driving force of cultivated land area in Huaibei Plain of Anhui Province. In order to ensure the sustainable use and management of regional cultivated land resources provide scientific basis. [methods] according to the relevant statistical data from 2000 to 2013, the cultivated land dynamic degree was adopted. Cultivated land index and cultivated land barycenter model were used to study the temporal and spatial pattern evolution of cultivated land area in Huaibei Plain agricultural area. The driving force of temporal and spatial pattern evolution of cultivated land area was analyzed by principal component analysis. [results] the total cultivated land area and most counties (districts) of Huaibei Plain from 2000 to 2013; The area of cultivated land decreased slightly. The area of cultivated land in other municipal districts has increased to a certain extent; (2) the cultivated land in Huaibei Plain was distributed in west, east and east. From 2000 to 2013, the center of gravity of cultivated land was transferred from northwest to southeast, but the migration range was not obvious. It did not affect the distribution pattern of the west, more east and less east in the study area. The results of principal component analysis show that the main driving forces of the evolution of temporal and spatial pattern of cultivated land area in the agricultural area of Huaibei Plain are social economy and urbanization. Agricultural production capacity and catastrophe. [recommendations] strengthen the protection of existing cultivated land resources and rationally develop reserve land resources; Rely on science and technology to improve agricultural production capacity, improve land management policies, and protect the vital interests of farmers; To control the number of people and establish a sense of crisis in cultivated land resources.
【作者单位】：重庆师范大学地理与旅游学院;三峡库区地表过程与环境遥感重庆市重点实验室;
【基金】：国家自然科学基金项目(41501104)
【分类号】：F323.211
【正文快照】： 0引言【研究意义】耕地是人类赖以生存的物质基础,是国家粮食安全和社会稳定的重要支撑和保障(王文刚等,2012)。自改革开放以来,我国处于城镇化和工业化快速发展阶段,国家经济建设占用了一定数量的耕地(陈红等,2010),且由于人口数量大,我国人均耕地面积远低于世界平均水平。因

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