RESEARCH ARTICLE
Characteristics and driving mechanism of wetland landscape pattern change in karst region of southwest China over past 35 years: A case study of Caohai wetland in Guizhou
Guiting Mu,
Ximei Wen,
Zhenming Zhang,
Guiting Mu
College of Resources and Environmental Engineering, Guizhou University, Guiyang, China
Guizhou Institute of Biology, Guizhou Academy of Sciences, Guiyang, China
Search for more papers by this authorXimei Wen
Guizhou Institute of Mountain Resource, Guizhou Academy of Sciences, Guiyang, China
Search for more papers by this authorCorresponding Author
Zhenming Zhang
College of Resources and Environmental Engineering, Guizhou University, Guiyang, China
Correspondence
Zhenming Zhang, College of Resources and Environmental Engineering, Guizhou University, Guiyang 550025, China.
Email: [email protected]
Search for more papers by this authorGuiting Mu,
Ximei Wen,
Zhenming Zhang,
Guiting Mu
College of Resources and Environmental Engineering, Guizhou University, Guiyang, China
Guizhou Institute of Biology, Guizhou Academy of Sciences, Guiyang, China
Search for more papers by this authorXimei Wen
Guizhou Institute of Mountain Resource, Guizhou Academy of Sciences, Guiyang, China
Search for more papers by this authorCorresponding Author
Zhenming Zhang
College of Resources and Environmental Engineering, Guizhou University, Guiyang, China
Correspondence
Zhenming Zhang, College of Resources and Environmental Engineering, Guizhou University, Guiyang 550025, China.
Email: [email protected]
Search for more papers by this authorFirst published: 17 March 2024
Abstract
To uncover the process of land use change and its driving mechanism of typical wetland ecosystems in the karst region, this thesis conducts a case study on Caohai National Nature Reserve (hereafter referred to as Caohai). With the support of geo-information technology and the landscape index analysis method, it quantitatively analyzes the magnitudes, speed, and landscape patterns of land use changes over 35 years from 1985 to 2020 using continuous remote sensing images. The results show that the land use structure of Caohai has mainly undergone mutual conversion between farmland and wetland. Before 2005, 164.60 ha of farmland were converted to wetland, from 2005 to 2015, 451.79 ha of wetland were converted to farmland, and from 2015 to 2020, 979.62 ha of farmland were transformed into wetland. The trend for construction land was to decrease first and then increase, with increased construction land primarily coming from farmland and partially from shrubland and forestland. The spatial connectivity of landscape distribution showed a slow decrease to a rapid decrease, then increased and reduced again, while diversity and evenness showed the opposite trend. Rational policies and urban construction planning are essential measures for protecting wetland ecosystems in the karst region.
CONFLICT OF INTEREST STATEMENT
The authors declare no conflicts of interest.
Open Research
DATA AVAILABILITY STATEMENT
The datasets generated during and/or analysed during the current study are available from the corresponding author on reasonable request.
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15 May 2024
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