地缘经济合作背景下的中国磨憨-老挝磨丁口岸地区建设用地扩张
肖池伟(1991-),男,湖北荆州人,博士,主要从事资源遥感、边境土地利用与地缘政治经济关系研究。E-mail: xiaocw@igsnrr.ac.cn |
收稿日期: 2019-02-11
要求修回日期: 2019-04-10
网络出版日期: 2019-10-29
基金资助
国家自然科学基金项目(41971242)
中国科学院地理科学与资源研究所“秉维”优秀青年人才计划(2018RC201)
中国科学院战略性先导科技专项(A类)(XDA20010201)
鄱阳湖湿地与流域研究教育部重点实验室开放基金项目(PK2019005)
版权
Construction Land Expansion in the Mohan-Boten Port Area between China and Laos in the Geoeconomic Cooperation Context
Received date: 2019-02-11
Request revised date: 2019-04-10
Online published: 2019-10-29
Supported by
National Natural Science Foundation of China(41971242)
Program for BINGWEI Excellent Young Talents of Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences(2018RC201)
Strategic Pilot Science and Technology Project of Chinese Academy of Sciences(Category A)(XDA20010201)
Key Laboratory of Poyang Lake Wetland and Watershed Research, Ministry of Education, Jiangxi Normal University(PK2019005)
Copyright
20世纪90年代以来,在地缘经济合作机制的影响下,作为中南半岛唯一的内陆国家,老挝边境地区正在经历以建设用地扩张为主的土地利用与覆被变化(LUCC)。本文以中老磨憨-磨丁口岸为例,基于2016年2月-2018年11月10期Sentinel-2 A/B 10 m分辨率遥感影像,利用面向对象与分类后目视修改相结合方法提取2016-2018年磨憨-磨丁口岸15 km缓冲带的建设用地分布信息,并分析了建设用地的时空变化及国别差异。研究结果表明:① 中老磨憨-磨丁口岸地区经历了阶段性快速发展,由2016年年初的1098.8 hm 2激增到2018年年底的2238.8 hm 2,增加了1140.0 hm 2,其中50.8%的新增建设用地集中在海拔800~1000 m,80.9%在坡度20°以下;② 中国磨憨口岸侧建设用地占研究区建设用地的比重从63.3%递减至54.8%,但仍占规模优势,由695.4 hm 2猛增到1226.7 hm 2,平均增幅6.7%;③ 老挝磨丁口岸侧建设用地增加近1.5倍,从403.4 hm 2剧增到1012.1 hm 2,平均增幅11.1%,占比由36.7%递增到45.2%。可见,日益发展的地缘经济合作是推动中老两国边境地区(特别是口岸)土地利用变化的主要诱因。
肖池伟 , 饶滴滴 , 刘怡媛 , 封志明 , 李鹏 . 地缘经济合作背景下的中国磨憨-老挝磨丁口岸地区建设用地扩张[J]. 地球信息科学学报, 2019 , 21(10) : 1576 -1585 . DOI: 10.12082/dqxxkx.2019.190053v
Since the 1990s, driven by the geoeconomic cooperation mechanisms, Laos, the only land-locked country in mainland Southeast Asia, has been experiencing rapid land use/cover change (LUCC) dominated by expansion of construction land, especially in its borderlands with adjacent countries (e.g. China). Taken the Mohan-Boten Port between China and Laos as the study area, a total of ten Sentinel-2 A/B 10m spatial resolution images (with none or little cloud coverage) from February 2016 to November 2018 were used to map the construction land through object-oriented classification and post-classification visual adjustments. The spatio-temporal change pattern and national difference of construction land in a 15 km buffer area of the Mohan-Boten Port, were analyzed and revealed via spatial and statistical analyses with ArcGIS 10.x software. Results showed that: (1) The area of construction land increased rapidly from 1098.8 hm 2 in early 2016 to 2238.8 hm 2 by the end of 2018 in the Mohan-Boten Port area. In particular, about 50.8% of the newly established construction land were located at elevations between 800 m and 1000 m and 80.9% on slopes below 20°. (2) During 2016-2018, the area of construction land increased from 695.4 hm 2 to 1226.7 hm 2 in the Mohan Port, with a growing rate of ca. 6.7%, while the proportion of the total area of construction land declined from 63.3% to 54.8%. (3) The construction land significantly increased by 1.5 times in the adjacent area of Boten Port, i.e., from 403.4 hm 2 to 1012.1 hm 2 in the same period and grew at an average rate of 11.1%. Moreover, the proportion of construction land increased from 36.7% to 45.2%, increased by 8.5% in the study area. We concluded that the developing geoeconomic cooperation is a dominant factor for land use change in the borderland between China and Laos, especially in the port area.
表1 研究区2016-2018年所使用的Sentinel-2影像数据列表Tab. 1 List of the Sentinel-2 images for the study area from 2016 to 2018 |
序号 | 影像获取时间 | 云量/% | 序号 | 影像获取时间 | 云量/% |
---|---|---|---|---|---|
1 | 2016-02-12 | 0.0 | 6 | 2018-02-16 | 0.0 |
2 | 2016-10-19 | 1.7 | 7 | 2018-02-21 | 1.2 |
3 | 2016-12-08 | 6.3 | 8 | 2018-02-26 | 0.6 |
4 | 2017-04-27 | 3.1 | 9 | 2018-03-03 | 0 |
5 | 2017-12-23 | 11.6 | 10 | 2018-11-03 | 0.0 |
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