| 张岑,任志远,孙素梅.基于RS和GIS的河西走廊地区城市土地利用时空变化图谱分析——以张掖市甘州区为例[J].干旱地区农业研究,2008,(1):166~170 |
| 基于RS和GIS的河西走廊地区城市土地利用时空变化图谱分析——以张掖市甘州区为例 |
| Tupu analysis of land use space — temporal changes in certain areas of Hexi Corridor — A case study on Ganzhou District Zhangye |
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| DOI：10.7606/j.issn.1000-7601.2008.01.30 |
| 中文关键词: RS和GIS 土地利用 时空变化 图谱 甘州区 |
| 英文关键词:RS and GIS spatiotemporal changes of land use Tupu Ganzhou District |
| 基金项目:国家自然科学基金(40371003) |
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| 中文摘要: |
| 运用地学信息图谱理论与方法,基于GIS软件平台Arcinfo9.0,从1987和2002年2个时期的TM和ETM遥感数据中提取了甘州区土地利用变化数据,建立了甘州区土地利用变化图谱和涨落势图谱,分析了该区15年间的土地利用时空变化。结果表明:19872002年该区土地利用发生了很大变化,荒漠地、耕地、城镇及交通用地增加,其中增长最多的图谱单元是荒漠地,增加了6.18×104hm2,占总新增图谱单元的60.2%,主要来源于牧草地、耕地、其它未利用地及林地的土质退化;其次是耕地,其图谱单元增加了1.8×104hm2,主要来源于对荒漠地的治理开发和对其它未利用地的开垦。牧草地、林地、水域及其它未利用地面积有所减少,减少最多的图谱单元是牧草地,减少了3.74×104hm2,占总减少土地图谱单元的50.92%,主要转移为其它未利用地和荒漠地;其次是9 933.32 hm2的其它未利用地图谱单元的减少,主要转移为荒漠地和耕地。 |
| 英文摘要: |
| The data of Ganzhou land use changes are extracted from RS data of TM and ETM in 1987～2002.Based Arcinfo9.0 of GIS software platform,the paper constitutes the Tupu of land use changes and land arising /declining,analyzing spatiotemporal changes of land use in Ganzhou during 15 years.The result shows that great changes happened in Ganzhou from 1987 to 2002.The area of desertificated land,cultivated land and urban/traffic land is rising,among which,desertificated land produced from grass land,cultivated land and the rest unused land is the most,increased 6.18×104 hm2(60.2%).The secondary growing land,mainly formed by desertificated land and the rest unused land,is cultivated land,increasing by 1.8×104 hm2.The area of grassland,forest land,water land and the rest unused land showed downward trend.The most significant reduction of land use,which transferred to desertificated land and the rest unused land greatly,is grassland Tupu unit,shrinking by 3.74×104 hm2(50.92%).The secondary declining land is the rest unused land,substituted by desertificated land and cultivated land. |
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