安徽省土地利用地形梯度格局变化分析

发布时间：2018-04-23 18:31

本文选题：土地利用 + 地形梯度　；参考：《遥感信息》2016年04期

【摘要】：针对研究土地利用变化方面基于非空间属性数据库的数据研究方法在空间位置和形象思维方面的不足,综合分析高程、坡度等多重因素研究不足的问题,提出了一种基于地形梯度的土地利用格局变化分析方法。以安徽省2000年、2005年和2010年Landsat TM影像为主要数据源,利用遥感和地理信息系统方法,探讨了安徽省2000~2010年,不同地形条件下自然因素以及人文因素对土地利用格局时空演变过程中的影响;基于数字高程模型,结合地学信息图谱理论,通过等间距(Equal Interval)分类方法,计算土地利用图谱类型的地形梯度分布。研究结果表明:安徽省土地利用结构以林地、耕地和建设用地为主,2000~2010年,未利用地和耕地面积呈不断减少趋势,建设用地面积由2000年的26 270.67km2增加到2010年的38 996.49km2,呈现不断增加的趋势,且增加幅度较大,破碎度也随之加重。前期变化型的优势分布区是地形位等级1~2级,后期变化型的分布指数总体呈增加趋势,持续变化型的分布指数变化呈现波动起伏的曲线,稳定型分布指数在1~6级呈现减小趋势,在6~10级呈现增加趋势。
[Abstract]:Aiming at the lack of spatial position and image thinking of data research methods based on non-spatial attribute database in land use change, this paper comprehensively analyzes the lack of research on many factors, such as elevation, slope, and so on. A land use pattern change analysis method based on terrain gradient is proposed. Based on the Landsat TM images of Anhui Province in 2000, 2005 and 2010, using remote sensing and GIS methods, this paper discusses the Landsat TM images in Anhui Province from 2000 to 2010. The influence of natural and human factors on the spatial and temporal evolution of land use pattern under different terrain conditions, based on digital elevation model, combining with the theory of geoscience information atlas, the equal interval equal intervalal classification method is used. The topographic gradient distribution of land use map types was calculated. The results show that the structure of land use in Anhui Province is mainly woodland, cultivated land and construction land from 2000 to 2010, and the area of unused land and cultivated land is decreasing continuously. The area of construction land increased from 26 270.67km2 in 2000 to 38,996.49 km ~ 2 in 2010, which showed an increasing trend, and the degree of fragmentation also increased. The dominant distribution area of the early change type is the topographic level 1 / 2, the distribution index of the late change type is increasing, the distribution index of the continuous changing type is fluctuating and fluctuating curve, and the stable type distribution index is decreasing at the level of 1 ~ 6. There is an increasing trend at 6 / 10.
【作者单位】：滁州学院地理信息与旅游学院;安徽省地理信息集成应用协同创新中心;北京航天泰坦科技股份有限公司;南京市测绘勘察研究院有限公司;
【基金】：滁州学院科研项目校级规划项目(2015GH13);滁州学院科研项目(2014PY07) 安徽省高校自然科学研究重点项目(KJ2015A265) 北京市科技新星计划(Z131101000413086)
【分类号】：P237;F301.24

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