| 基于遥感影像的吴起县土地利用/覆盖动态监测分析 |
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| 引用本文： | 薛阿亮,常庆瑞,吴 琴. 基于遥感影像的吴起县土地利用/覆盖动态监测分析[J]. 西北林学院学报, 2008, 23(3) |
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| 作者姓名： | 薛阿亮 常庆瑞 吴 琴 |
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| 作者单位： | 西北农林科技大学 资源环境学院，陕西 杨陵 712100 |
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| 摘 要： | 以1986年和2003年TM遥感影像为数据源，在ERDAS IMAGINE 8.7遥感图像处理软件的支持下，监督分类与机助屏幕解译相结合，获得了吴起县2个时期的土地利用/覆盖图。监测 结果表明，从1986～2003年，耕地面积由113 441.08 hm 2 下降到28 215.58 hm 2 ，减少了75.13%; 林地由21 988.57 hm 2 增加到139 454.70 hm 2 ，增长了4.34倍;草地面积变化不大，维持在17万 hm 2 ，但覆盖度明显提高，高覆盖度草地由42 518.0 hm 2 增加到113 831.0 hm 2 ;未利用的荒草地由 69 591.0 hm 2 减少到36 523.3 hm 2 。
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| 关 键 词： | TM遥感影像 土地利用/覆盖 动态监测 吴起县 |
Dynamic Monitoring on Land Use/Cover in Wuqi County Based on the Interpretation of TM Image |
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| XUE Aˉliang,CHANG Qingˉrui,WU Qin. Dynamic Monitoring on Land Use/Cover in Wuqi County Based on the Interpretation of TM Image[J]. Journal of Northwest Forestry University, 2008, 23(3) |
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| Authors: | XUE Aˉliang CHANG Qingˉrui WU Qin |
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| Affiliation: | 1. College of Resource and Environment， Northwest A&F University， Yangling， Shaanxi 712100， China |
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| Abstract: | Applying 1986 and 2003 TM images as data sources of Wuqi County，Shaanxi Provice， two periˉ ods of land use and land cover maps were obtained supported by ERDAS IMAGINE 8.7 by supervised clasˉ sification & computerˉaided screen interpretation. Monitoring results show that from 1986 to 2003， the cultivated area dropped from 113 441.08hm 2 to 28 215.58 hm 2 . reduced 75.13%; woodland increased from 139 454.70 hm 2 to 21 988.57 hm 2 ， by 4.34 times; grassland changed little change and maintained170 000 hm 2 ， but the coverage had markedly improved， high coverage grassland had grown up from 42 518.0 hm 2 to 113 831.0 hm 2 ;unused grassland decreased from 69 591.0 hm 2 reduced to 36 523.3 hm 2 . |
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| Keywords: | TM remote image land use/cover dynamic monitoring Wuqi County |
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