喀斯特山区城市群耕地时空演变特征及驱动因素分析OA北大核心CSTPCD
Study on Temporal and Spatial Changes and Influencing Factors of Cultivated Land in Karst Mountainous Urban Agglomeration
厘清城市化背景下喀斯特山区城市群耕地现状及影响因素,对推进区域可持续发展和保障粮食安全具有重要意义.以黔中城市群核心经济区为例,基于2010年、2020年耕地数据,利用变化轨迹分析法、耕地指数、空间自相关和地理探测器等方法,探究喀斯特山区城市群耕地时空演变特征及其驱动因素.结果表明:从整体看,黔中城市群核心经济区耕地分布表现为"中部贵阳市低,周边高"的特点;从县域看,研究期内县域耕地分布均以300～500 km2为主.黔中城市群核心经济区耕地同时具有转出和转入的变化特征,但耕地转出面积明显大于转入,使得研究区耕地减少2 309.37 km2.黔中城市群核心经济区耕地转入、转出具有明显的空间集聚特征,且均以高-高聚类为主.影响黔中城市群耕地时空分布的主要因素为经济因素,但随着社会经济发展,经济因素的影响程度有所降低,影响因素逐渐趋于多元化.为最大程度控制黔中城市群耕地减少,建议在发展经济的同时要合理规划土地利用,保障耕地安全.
To clarify the current situation and influencing factors of cultivated land in Karst Mountainous Urban Agglomeration under the background of urbanization,which is of great significance to promote regional sustainable development and ensure food security.Taking the core economic zone of the central Guizhou urban agglomeration as an example,based on the cultivated land data in 2010 and 2020,this paper uses the methods of change trajectory analysis,cultivated land index,spatial autocorrelation and geographical detector to explore the temporal and spatial evolution characteristics and driving factors of cultivated land in the karst mountainous urban agglomeration.The result show that on the whole,the distribution of cultivated land in the core economic zone of the central Guizhou urban agglomeration showed the characteristics of"low in central Guiyang and high in the surrounding areas";from the perspective of county,the distribution of cultivated land in the county during the study period is mainly 300‒500 km2.The cultivated land in the core economic zone of the central Guizhou urban agglomeration has the characteristics of both transfer out and transfer in,but the area of cultivated land transferred out is significantly greater than that transferred in,which reduces the cultivated land in the study area by 2 309.37 km2.The transfer in and transfer out of cultivated land in the core economic zone of Central Guizhou urban agglomeration have obvious spatial agglomeration characteristics,and are mainly high-high cluster.The main factor affecting the temporal and spatial distribution of cultivated land in the urban agglomeration of Central Guizhou is economic factors,but with the development of social economy,the influence degree of economic factors has decreased,and the influencing factors gradually tend to be diversified.In order to control the reduction of cultivated land in the central Guizhou urban agglomeration to the greatest extent,it is suggested that the land use should be reasonably planned while developing the economy to ensure the safety of cultivated land.
陈洋;李剑飞;蒙友波;罗洁琼
贵州省自然资源勘测规划研究院,贵阳 550004北京世纪国源科技股份有限公司,贵阳 550004南通大学交通与土木工程学院,江苏南通 226019
地理科学
耕地时空变化影响因素喀斯特山区黔中城市群
cultivated landtemporal and spatial changesinfluencing factorsKarst Mountain areascentral Guizhou urban agglomeration
《沈阳农业大学学报》 2024 (005)
594-604 / 11
国家自然科学基金项目(42001239)
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