Journal of Geo-information Science >
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
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.
XIAO Chiwei , RAO Didi , LIU Yiyuan , FENG Zhiming , LI Peng . Construction Land Expansion in the Mohan-Boten Port Area between China and Laos in the Geoeconomic Cooperation Context[J]. Journal of Geo-information Science, 2019 , 21(10) : 1576 -1585 . DOI: 10.12082/dqxxkx.2019.190053v
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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