1980-2017年孟加拉国城市扩张的景观格局变化特征及其模式

石小倩; 赵筱青; Jakariya M D; 李思楠; 普军伟

doi:10.13961/j.cnki.stbctb.2021.02.036

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1980-2017年孟加拉国城市扩张的景观格局变化特征及其模式

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- 1980-2017年孟加拉国城市扩张的景观格局变化特征及其模式
- Characteristics and Models of Landscape Pattern Changes in Urban Expansion in Bangladesh During 1980-2017
- 水土保持通报 2021年41卷第2期页码：275-283
- 作者机构：
  
  1. 云南大学地球科学学院,云南,昆明,650500
  2. 南北大学环境科学与管理学院, 达卡 1229, 孟加拉国
- 作者简介：
- 基金信息：
  
  云南省科技厅—云南大学“双一流”建设联合资助项目“云南喀斯特山区水土资源—生态环境耦合协调及国土空间优化调控”（2018FY001-017）;云南大学研究生创新人才培养项目（C176230200）;云南大学国际化与文化传承创新—孔子学院转型建设与中外人文交流项目（C176250202）
- DOI：10.13961/j.cnki.stbctb.2021.02.036
  中图分类号： K901;K915
- 纸质出版：2021
- 稿件说明：
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石小倩, 赵筱青, Jakariya M D, 等. 1980-2017年孟加拉国城市扩张的景观格局变化特征及其模式[J]. 水土保持通报, 2021,41(2):275-283.

Shi Xiaoqian, Zhao Xiaoqing, Jakariya M D, et al. Characteristics and Models of Landscape Pattern Changes in Urban Expansion in Bangladesh During 1980-2017[J]. Bulletin of Soiland Water Conservation, 2021, 41(2): 275-283.
石小倩, 赵筱青, Jakariya M D, 等. 1980-2017年孟加拉国城市扩张的景观格局变化特征及其模式[J]. 水土保持通报, 2021,41(2):275-283. DOI： 10.13961/j.cnki.stbctb.2021.02.036.

Shi Xiaoqian, Zhao Xiaoqing, Jakariya M D, et al. Characteristics and Models of Landscape Pattern Changes in Urban Expansion in Bangladesh During 1980-2017[J]. Bulletin of Soiland Water Conservation, 2021, 41(2): 275-283. DOI： 10.13961/j.cnki.stbctb.2021.02.036.

摘要

[目的] 对1980—2017年孟加拉国城市扩张的景观格局变化特征及其模式进行研究，为该国及发展中国家的城市土地利用与管理提供差异化发展建议。[方法] 以“一带一路”沿线孟加拉国的4个主要城市Dhaka，Chittagong，Khulna和Sylhet为研究对象，分析1980，1990，2000，2010和2017年5期4个城市扩张过程中的景观格局变化特征，识别城市扩张模式。[结果] 1980—2017年，孟加拉国4个主要城市的扩张规模表现为：Dhaka > Chittagong > Khulna > Sylhet，扩张速度表现为：Sylhet > Dhaka > Chittagong > Khulna；4个城市扩张的景观格局变化趋势均表现为面积持续增加，优势度加强，破碎化程度波动上升。空间格局向复杂化和不规则化方向发展，空间形态逐渐多样化。1980—1990年，Dhaka，Chittagong和Sylhet这3个城市扩张的主要模式为外部扩张式，Khulna主要为邻接扩张式，1990—2017年，邻接扩张式成为4个城市扩张的主要模式，城市连片度逐渐增高。[结论] 1980年以来，孟加拉国城市持续扩张，景观格局发生显著变化，扩张模式总体呈由外部扩张式向邻接扩张式转变的趋势。

Abstract

[Objective] The characteristics and landscape pattern change of urban expansion in Bangladesh since 1980 were studied in order to provide differentiated development suggestions for urban land use and management in Bangladesh and other developing countries.[Methods] Taking Dhaka

Chittagong

Khulna and Sylhet

four major cities of Bangladeshi along the "One Belt and One Road" as the research objects

the characteristics of landscape pattern change in the process of urban expansion in 1980

1990

2000

2010 and 2017 were analyzed

and the pattern of urban expansion was identified.[Results] From 1980 to 2017

the expansion scale of the four major cities in Bangladesh was showed as:Dhaka > Chittagong > Khulna > Sylhet

and the expansion speed was showed as:Sylhet > Dhaka > Chittagong > Khulna. The trend of landscape pattern change of the four cities showed that the area continued to increase

the dominance strengthened

the degree of fragmentation fluctuated

the spatial pattern developed toward complexity and irregularity

and the space formation gradually diversified. From 1980 to 1990

external expansion was the main pattern of urban expansion in Dhaka

Chittagong and Sylhet

while adjacent expansion was the main pattern of urban expansion in Khulna. From 1990 to 2017

adjacent expansion became the main pattern of urban expansion in all the four cities

and the degree of urban connectivity increased gradually.[Conclusion] During 1980-2017

the city of Bangladesh was expanding continuously

and the landscape pattern changed significantly. The expansion pattern changed from external expansion to adjacent expansion.

关键词

Keywords

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