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亚吉铁路与蒙内铁路沿线土地覆盖变化研究

A study on land cover changes along Ababa-Djibouti railway and Mombasa-Nairobi railway
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摘要 为了研究非洲铁路建设对沿线土地覆盖的影响,以我国援非建设的亚吉铁路和蒙内铁路沿线10 km半径范围作为研究区,比较建成前(2010年)、建设时(2015年)和建成后(2020年)3个时期的土地动态变化情况.结果表明:1)2条铁路沿线的土地利用面积大小分别为亚吉铁路:植被>其他>耕地>建设用地>水体,蒙内铁路:植被>耕地>建设用地>其他>水体;2)亚吉铁路的土地变化越来越剧烈,而蒙内铁路的土地变化呈相反情况;3)建设用地的单一土地利用动态度对综合土地利用动态度的贡献度最高;4)2条铁路在建成后对于植被的影响要超过施工阶段;5)2条铁路沿线的综合土地动态度都与距离呈负相关,2条铁路建成后偏远地区与核心区的综合土地动态度差异显著缩小,区域土地利用强度趋近于均质化. It was aimed to study the impact of African railway construction on land cover along the line,a 10 km radius range along the Ababa-Djibouti and Mombasa-Nairobi railway,which had been constructed with Chinese aid,was used as the study area to compare the dynamics of land between the three periods:before construction(2010),at the time of construction(2015),and after construction(2020).The results showed that:1)The size of land use area along the two rail lines was,respectively,Ababa-Djibouti railway:woodland>other>cultivated land>construction land>water body,and Mombasa-Nairobi railway:woodland>cultivated land>construction land>other>water body;2)The land changes in the Ababa-Djibouti railway were increasingly intense,while those in the Mombasa-Nairobi railway were in the opposite direction;3)The single land use dynamic of construction land had the highest contribution to the integrated land use dynamic;4)Both rail runs had greate impact on vegetation after they were built than during the construction phase;5)The integrated land dynamic degree along both rail lines was negatively correlated with distance,and the difference between integrated land dynamic degree in the remote area and the core area was significantly narrowed after the completion of both rail lines,with regional land use intensity approached homogenization.
作者 陈远见 郑玉涵 张振振 林兴稳 吴超凡 张朝阳 CHEN Yuanjian;ZHENG Yuhan;ZHANG Zhenzhen;LIN Xingwen;WU Chaofan;ZHANG Chaoyang(College of Geography and Environmental Sciences,Zhejiang Normal University,Jinhua 321004,China)
出处 《浙江师范大学学报(自然科学版)》 CAS 2024年第2期212-218,共7页 Journal of Zhejiang Normal University:Natural Sciences
基金 非洲研究与中非合作省部共建协同创新中心委托课题(21XTFZ03B)。
关键词 亚吉铁路 蒙内铁路 土地覆盖 缓冲区 土地动态度 Ababa-Djibouti railway Mombasa-Nairobi railway land coverage buffer zones spatial dynamics
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