合肥市土地利用景观格局变化及驱动机制研究

2021-01-05 20:57:31刘锦洋鲁成树
安徽农业科学 2021年24期

刘锦洋 鲁成树

摘要 [目的]为进一步揭示合肥市土地利用景观格局的变化规律及驱动机制,以合肥市为研究对象,对合肥市的土地利用景观格局与驱动机制进行研究。[方法]基于合肥市2010、2015、2018年土地利用现状图,运用ArcGIS、Fragstats 3.3、SPSS等软件,采取景观格局指数法、主成分分析法,对合肥市土地景观格局及驱动机制进行研究。[结果]合肥市土地利用信息熵上升,土地利用的有序程度降低,主要是由耕地景观转向建设用地景观;土地利用景观格局呈现碎片化程度上升,并呈现出集聚—扩散—集聚、不稳定—稳定—不稳定、复杂—简单—复杂的变化特征;合肥市土地利用景观格局变化主要是经济驱动与人口驱动协同作用的结果。[结论]该研究为经济快速发展中城市土地利用的合理布局提供指导依据。

关键词 景观格局;土地利用;驱动机制;合肥市

中图分类号 F301.2  文献标识码 A

文章编号 0517-6611(2021)24-0088-05

doi:10.3969/j.issn.0517-6611.2021.24.020

Study on the Landscape Pattern Change and Driving Mechanism of Land Use in Hefei City

LIU Jin-yang,LU Cheng-shu (School of Geography and Tourism,Anhui Normal University,Wuhu,Anhui 241000)

Abstract [Objective] In order to further reveal the changing law and driving mechanism of land use landscape pattern in Hefei,taking Hefei City as the research object,the land use landscape pattern and driving mechanism of Hefei City were studied.[Method]Based on the land use status map of Hefei City in 2010,2015 and 2018,ArcGIS,Fragstats 3.3,SPSS and other software were used to study the land landscape pattern and driving mechanism of Hefei City by landscape pattern index method and principal component analysis method.[Result]The land use information entropy increased,and the land use order decreased,which was mainly from cultivated land landscape to construction land landscape.The degree of fragmentation of land use landscape pattern increased,and showed the characteristics of agglomeration-diffusion-agglomeration,instability-stability-instability,complex-simple-complex.The change of landscape pattern of land use in Hefei City was mainly the result of the synergistic effect of economy-driven and population-driven.[Conclusion]This study provides guidance for the rational layout of urban land use in the rapid economic development.

Key words Landscape pattern;Land use;Driving mechanism;Hefei City

作者簡介 刘锦洋(1998—),男,安徽蚌埠人,硕士研究生,研究方向:土地利用、土地规划。*通信作者,副教授,博士,硕士生导师,从事土地利用、土地规划研究。

收稿日期 2021-03-19

景观格局一般都与土地利用相关联,土地利用是导致景观格局转变的重要因素[1]。景观格局指数具有单个的描述性,具有相关性的景观格局指数耦合更具说服力,从而构成景观格局体系[2]。景观格局可从斑块层面、类型层面、景观层面进行分析[3]。同时将空间的变化尺度和时间的演绎尺度相结合,从而构成了景观格局的异质性[4]。当前,相关研究通过构建预测模型、研究驱动力等,将景观格局变化与生态脆弱性、生物多样性、耕地破碎性等领域相交互,并形成了相对完善的评价体系[5]。……

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