| 基于RS和GIS的石羊河流域近50年土地覆被类型变化研究 |
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| 引用本文： | 卢辉雄,聂振龙,刘敏,冯博,程旭,王金哲,王茜,崔浩浩,范芳.基于RS和GIS的石羊河流域近50年土地覆被类型变化研究[J].地质与资源,2020,29(2):165-171,179. |
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| 作者姓名： | 卢辉雄 聂振龙 刘敏 冯博 程旭 王金哲 王茜 崔浩浩 范芳 |
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| 作者单位： | 1. 核工业航测遥感中心, 河北 石家庄 050002;2. 东华理工大学 地球科学学院, 江西 南昌 330013;3. 中国地质科学院 水文地质环境地质研究所, 河北 石家庄 050061 |
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| 基金项目： | 科技部“石羊河流域地下水合理开发利用及生态功能保护研究与示范”课题(2017YFC0406103);中国地质调查局、中国科学院“西北生态脆弱区地下水超采与生态退化的管控阈体系”课题(JYYWF20180403). |
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| 摘 要： | 选取石羊河流域为研究区，采用1970～2017年18期Landsat系列卫星遥感数据，通过数据处理、面向对象信息提取，获取了石羊河流域近50年土地覆被类型基础数据；运用转移矩阵、GIS分析手段，对石羊河流域不同土地类型时空变化特征进行了研究.结果表明：1）近50年来，石羊河流域自然绿洲面积总体呈逐年减少趋势，由1970年的35 717.53 km2减少到2017年的33 865.47 km2；人工绿洲面积相应增加，由5 355.79 km2增至7 208.70 km2.2）耕地、天然林地、天然草地、建设用地总体呈增加趋势，耕地的增加主要由天然草地、未利用地及水域湿地转化而来，天然林地的增加主要由天然草地、未利用地转化而来，天然草地面积的增加主要由未利用地转化而来，建设用地的扩张以占用周围草地、耕地及未利用地为主.3）石羊河流域土地类型的演变，总体反映了石羊河流域生态环境趋好，绿洲区域逐渐增加.
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| 关 键 词： | 土地覆被类型 石羊河 RS GIS 演变规律 甘肃省 |
| 收稿时间： | 2019-07-23 |
RESEARCH ON LAND COVER CHANGES IN SHIYANG RIVER BASIN IN RECENT 50 YEARS BASED ON RS AND GIS |
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| LU Hui-xiong,NIE Zhen-long,LIU Min,FENG Bo,CHENG Xu,WANG Jin-zhe,WANG Qian,CUI Hao-hao,FAN fang.RESEARCH ON LAND COVER CHANGES IN SHIYANG RIVER BASIN IN RECENT 50 YEARS BASED ON RS AND GIS[J].Geology and Resources,2020,29(2):165-171,179. |
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| Authors: | LU Hui-xiong NIE Zhen-long LIU Min FENG Bo CHENG Xu WANG Jin-zhe WANG Qian CUI Hao-hao FAN fang |
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| Institution: | 1. Airborne Survey and Remote Sensing Center of Nuclear Industry, Shijiazhuang 050002, China;2. School of Earth Sciences, East China Institute of Technology, Nanchang 330013, China;3. Institute of Hydrogeological and Environment Geology, CAGS, Shijiazhuang 050061, China |
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| Abstract: | The Landsat series satellite remote sensing data from 1970 to 2017 are adopted for basic data to study the land covers in the Shiyang River Basin by data processing and object-oriented information extraction.The transfer matrix and GIS approaches are used to analyze the temporal and spatial variation characteristics of different land types in Shiyang River Basin.The results show that:1)In the past 50 years,the natural oasis area in Shiyang River Basin has been decreasing year by year,from 35917.53 km2 in 1970 to 33865.47 km2 in 2017;and the area of artificial oasis increased correspondingly from 5355.79 km2 to 7207.70 km2.2)The cultivated land,natural forest land,natural grassland and construction land show a generally increasing trend.The increased cultivated land is transferred mainly from natural grassland,unused land and wetland.The increase of natural forest land is mainly from natural grassland and unused land.The natural grassland area is increased mainly by the transferring of unused land.The construction land expands by taking up surrounding grassland,cultivated land and unused land.3)The evolution of land types reflects the better ecological environment and increasing oasis area of the Shiyang River Basin. |
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| Keywords: | land cover type Shiyang River remote sensing(RS) Geographic Information System(GIS) evolution Gansu Province |
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