桐柏大别山区土地利用时空变化图谱分析
Atlas analysis on spatial-temporal changes of land use in Tongbai-Dabie mountainous area
张荣华 1刘霞 2李欢 2姚孝友 3王友胜 2张光灿2
作者信息
- 1. 山东农业大学林学院,山东省土壤侵蚀与生态修复重点实验室,国家林业局泰山森林生态站,271018,山东泰安;北京师范大学地理学与遥感科学学院,100875,北京
- 2. 山东农业大学林学院,山东省土壤侵蚀与生态修复重点实验室,国家林业局泰山森林生态站,271018,山东泰安
- 3. 水利部淮河水利委员会水土保持处,233001,安徽蚌埠
- 折叠
摘要
运用地学信息图谱理论方法,基于地理信息系统时空分析模型,以桐柏大别山区20 a土地利用3期(1987、1997、2007)空间数据为基础,通过建立桐柏大别山区土地利用变化图谱和涨落势图谱,分析该区域土地利用变化的时空特征,预测未来土地利用变化的趋势.结果表明:1)1987-2007年,研究区土地利用发生了很大变化,耕地面积持续性减少,林地和建设用地面积持续性增加,草地和未利用地面积先增加后减少,水域面积先减少后增加；2)空间格局上,耕地与林地相互转化遍布整个研究区域,耕地和林地转为建设用地主要分布在各县市周边地区,水域转为耕地和林地主要位于水域与其他用地交接地带；3)涨落势图谱中,林地涨势最明显,增加了5 904.06 km2,占新增图谱单元61.31％,主要来源于耕地和水域转出,耕地落势最明显,减少了6 394.71 km2,占萎缩图谱单元66.41％,主要转为林地和建设用地；4)未来10年,桐柏大别山区土地利用类型仍将以耕地、林地为主.
Abstract
Based on GIS spatial and temporal analysis model, geo-information atlas theory were used in this paper. Land use data were extracted from spatial data of three periods ( 1987, 1997, 2007) in Tongbai-Dabie mountainous area. Land use change atlas and arising/declining atlas from 1987 to 2007 were established. Land use changes characteristic were analyzed, and land use changes were predicted. Results indicate that land use changes significantly during the past 20 years. The area of farmland decreased, and forest land and construction land increased. Grassland and unused land increased firstly, then decreased, vice verse water land decreased firstly, then increased. From the spatial series, mutual transformation between farmland and forest land was obvious in the whole research area. Farmland and forest land transferred to construction land in the nearby of town. Waters transferred to farmland and forest land in the nearby of waters. In arising/declining atlas, the largest expanding atlas was forest land, with an increase of 5 904. 06 km2, accounting for 61. 31% in expanding atlas, mainly from farmland and water land. And the largest shrinking atlas was farmland, with a decrese of 6 394.71 km2, accounting for 66.41% in shrinking atlas, mainly transforming into forest land and construction land. In the future, farmland and forest land will continue to be chief land use type.
关键词
地学信息图谱/时空变化/土地利用/桐柏大别山区Key words
geo-information atlas/spatio-temporal changes/land use/Tongbai-Dabie mountainous area引用本文复制引用
基金项目
水利部淮河水利委员会资助项目(hwsbc-2007-001)
1(SBJ-2010-002)
林业公益性行业科研专项(201104002-6)
出版年
2011
国家科技期刊平台
NSTL
维普
万方数据