漯河市近40年土地利用及景观格局变化特征研究

本文以河南省漯河市为例,以遥感解译的漯河市近40年来土地利用数据为基础,运用GIS叠置分析、土地利用转移矩阵等空间分析方法,结合景观格局指标,研究其改革开放以来土地利用及景观格局变化特征,为优化土地资源配置及科学的城市规划提供依据。结果表明:(1)1980年至2015年间漯河城镇用地面积呈显著增加趋势,扩张主要占用耕地;(2)林地和农村居民点用地总体呈增加趋势,2000年来其他建设用地面积迅速增加;(3)漯河市各景观类型总体呈平衡发展态势,耕地优势度有所下降,建设用地优势度不断上升;(4)人口增长与经济发展、交通条件改善及政府政策变动是影响漯河市土地利用变化和景观格局演变的主要因素。

Study on the Change Characteristics of Land Use and Landscape Patterns in Luohe in Recent 40 Years

Taking Luohe City in Henan Province as an example,based on the land use data interpreted by remote sensing in recent 40 years,this paper uses GIS spatial analysis methods such as overlay analysis,land use transfer matrix,and combines landscape pattern indicators to study the characteristics of land use and landscape pattern change of Luohe City,which could provide the basis for optimizing the allocation of land resources and scientific urban planning.The results show that:(1)From 1980 to 2015,the urban land area of Luohe City showed a significant increase trend,which mainly occupied arable land.(2)The woodland and rural residential land tended to increase in general.Since 2000,the area of other construction land increased rapidly.(3)The landscape types in Luohe City were developing in a balanced way.The dominance degree of cultivated land was declining,while for construction land it was rising.(4)The expansion of population,the rapid development of economy,the improvement of traffic conditions and the change of government policies were the main factors affecting the land use change and landscape pattern evolution in Luohe City.