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Wetland Transitions and Protection under Rapid Urban Expansion: A Case Study of Pearl River Estuary, China
Zhao, Hui; Wang, Xiaodan; Cai, Yanjiang; Liu, Weilong
Corresponding AuthorZhao, Hui
2016
Source PublicationSUSTAINABILITY
ISSN2071-1050
Volume8Issue:5Pages:doi:10.3390/su8050471
SubtypeArticle
AbstractUnderstanding wetland changes under urbanization is important for wetland management. In this study, net transition intensity (NTI) and total transition intensity (TTI) are presented to characterize wetland transitions based on spatial data obtained from Landsat satellite images of Pearl River estuary in South China. NTI is commonly used to represent changes in absolute amounts for each class of wetland, while TTI reflects the internal transition activities and amounts. The third index, the urbanization intensity index (UII), is used to investigate the intensity and velocity of urban land expansion at the same time periods. The results show that one-third of the total wetland area was lost from 1979 to 2009 in the study area and seven types of estuarine wetlands were degraded. The basic pattern of wetland transition is from natural wetlands to constructed wetlands and then to urban lands. Intertidal mud and sand and paddy fields were the major natural and constructed wetlands, respectively, transferred to urban lands. The TTI value was generally greater than the NTI value for these wetlands. TTI >> NTI is an important indicator for wetland transitions under rapid urban expansion in the Pearl River estuary. Based on the integration of the two indices (NTI and TTI), a protection and management plan framework for the Pearl River estuary wetlands is proposed. This plan emphasizes the key and important zones and their different features, and includes actions that can be implemented in and around natural and constructed wetlands.
KeywordWetland Transition Landsat Satellite Images Urbanization Expansion Protection Plan Pearl River Estuary
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
DOI10.3390/su8050471
WOS Subject ExtendedEnvironmental Sciences & Ecology
Indexed BySCI
WOS KeywordLAND-COVER CHANGE ; DYNAMICS ; PATTERNS ; IMPACT ; POLICY ; MATRIX ; DELTA ; AREA
Language英语
Quartile4区
TOP
WOS SubjectEnvironmental Sciences ; Environmental Studies
WOS IDWOS:000377983800065
Funding OrganizationNational Natural Science Foundation(41201096) ; National Science and Technology Support Projects Grant(2012BAC19B05) ; Youth Scientific Foundation of Institute of Mountain Hazards and Environment(SDS-QN-1308)
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Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/17472
Collection山地表生过程与生态调控重点实验室
AffiliationChinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu 610041, Sichuan, Peoples R China
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
Zhao, Hui,Wang, Xiaodan,Cai, Yanjiang,et al. Wetland Transitions and Protection under Rapid Urban Expansion: A Case Study of Pearl River Estuary, China[J]. SUSTAINABILITY,2016,8(5):doi:10.3390/su8050471.
APA Zhao, Hui,Wang, Xiaodan,Cai, Yanjiang,&Liu, Weilong.(2016).Wetland Transitions and Protection under Rapid Urban Expansion: A Case Study of Pearl River Estuary, China.SUSTAINABILITY,8(5),doi:10.3390/su8050471.
MLA Zhao, Hui,et al."Wetland Transitions and Protection under Rapid Urban Expansion: A Case Study of Pearl River Estuary, China".SUSTAINABILITY 8.5(2016):doi:10.3390/su8050471.
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