Land cover and land use change related to shrimp farming in coastal areas of Quang Ninh, Vietnam using remotely sensed data

Bui, Thuyet D.; Maier, Stefan W.; Austin, Christopher M.

doi:10.1007/s12665-013-2964-0

Cited by 29 publications

(15 citation statements)

References 46 publications

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“…Land use types were determined by a combination of supervised and unsupervised (ISODATA) classification (Pabi 2007;Suribabu et al 2012;Wondrade et al 2014;Bui et al 2013), as well as manual interpretation of satellite images (Bui et al 2013), aerial photographs, topographic maps, survey data, and ground truth information (Yagoub and Kolan 2006;Liu et al 2009). Since the aim of this study was to examine land cover changes and the spatial extent of built-up areas, rather than focusing on the internal variation of various urban structures, we adopted a simple classification system, partly derived from Anderson's (Anderson et al 1976) firstorder hierarchical classification system.…”

Section: Image Classificationmentioning

confidence: 99%

“…Using these signature files, supervised classification was carried out with a maximum likelihood algorithm (Yuan et al 2005). Finally, to reduce potential salt-andpepper effects, a 3 9 3 majority filter was applied before the classified land covers were used for further analysis (Yin et al 2005;Bui et al 2013). Accuracy assessment was carried out using field observation GPS data, aerial photographs, topographic maps, and random sampling.…”

Section: Image Classificationmentioning

confidence: 99%

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Examination of land use/land cover changes, urban growth dynamics, and environmental sustainability in Chittagong city, Bangladesh

Hassan¹,

Nazem

2015

Environ Dev Sustain

121

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As in many other developing countries, cities in Bangladesh have witnessed rapid urbanization, resulting in increasing amounts of land being taken over and therefore land cover changing at a faster rate. Until now, however, few efforts have been made to document the impact of land use and land cover changes on the climate, environment, and ecosystem of the country because of a lack of geospatial data and time-series information. By using open source Landsat data integrated with GIS technologies and other ancillary data, this study attempts to classify land use and create land cover maps, enabling postclassification change detection analysis. By this method, we document the spatial and temporal trajectory of urban expansion in Chittagong, the second largest city in Bangladesh, over a 36-year period. The findings suggest that, over the study period, 56 % of the land cover has undergone change, mainly because of the expansion of built-up areas and other human activities. During the 36-year period, the built-up area around Chittagong city has expanded by 618 %, with an average annual rate of increase of 17.5 %. As a result of rapid urbanization, the vegetated hills near urban development areas face serious threats of further encroachment and degradation, given that 2178 ha of hills have already been intruded over the study period. Because urbanization processes in Bangladesh have traditionally been viewed as the result of population growth and economic development, very little work has been done to track the potential growth trajectory in a physical or spatial context. This study, therefore, will contribute to the current understanding of urban development in Bangladesh from a temporal and spatial point of view. Findings will be able to assist planners, stakeholders, and policy makers in appreciating the dynamism of urban growth and therefore will facilitate better planning for the future to minimize environmental impacts.

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Section: Image Classificationmentioning

confidence: 99%

Section: Image Classificationmentioning

confidence: 99%

Examination of land use/land cover changes, urban growth dynamics, and environmental sustainability in Chittagong city, Bangladesh

Hassan¹,

Nazem

2015

Environ Dev Sustain

121

View full text Add to dashboard Cite

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“…For instance, 23.9% of mangrove cover has been 694 converted to shrimp farms between 1999 and 2008 in Ha Long, Vietnam (Bui et al, 2014). 695…”

Section: Impacts Of Shrimp Farming On Carbon Dynamics Between 1992/19mentioning

confidence: 99%

The impacts of shrimp farming on land-use and carbon storage around Puttalam lagoon, Sri Lanka

Bournazel

Kumara²,

Jayatissa

et al. 2015

Ocean & Coastal Management

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“…Since 1943 CE, the increase in rice production, aquaculture, and the impacts of war has resulted in an estimated ∼30-35% loss of primary forest, wetland, and mangrove habitats that harbor high levels of biodiversity (Vietnam contains 10% of the world's flora and fauna) (FOA, 2009). Forest loss, especially of mangroves (31.6% loss between 2001 and 2008), has been substantial around the Red River Delta and Ha Long Bay with only ∼10% of the area still forested (FOA, 2009;Bui et al, 2014). Although much of the ecosystem degradation can likely be linked to agricultural development, political instability and frequent warfare likely also contributed to a changing landscape.…”

Section: Introductionmentioning

confidence: 99%

Late Holocene Anthropogenic and Climatic Impact on a Tropical Island Ecosystem of Northern Vietnam

et al. 2019

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Northern Vietnam has a long history of human occupation, warfare, and agriculture; yet, the environmental consequences of human activity are poorly understood due to limited paleoecological records. Results from a terrestrial wetland sediment core from the tropical island, Quan Lan, in Ha Long Bay provide a local record of ecosystem responses to societal shifts due to warfare/instability and climate change. A multiproxy study, including pollen, macro charcoal, fecal stanols, and geochemistry, suggests that native vegetation was abundant and low-level, subsistence wet-rice agriculture and burning were in practice during a time of increased monsoon intensity between 1150 BCE and 950 CE. Between 950 and 1450 CE, a trading and military port was established on Quan Lan Island which served as a major hub of southeast Asian trade and protected the mainland from Mongol invasions. During this period, population near the wetland declined to undetectable levels, rice agriculture declined, burning ceased, and disturbance species expanded. A simultaneous shift toward a more arid climate, with possible extended years of drought, occurred during the Medieval Climate Anomaly based on regional climate records. Without a reliable source of freshwater, rice production declined and/or was supplemented by trade. When the mainland capital near present day Hanoi moved south to Hue after 1450 CE, the port ceased operation. During this time, climate became wetter, and precipitation and surface water more reliable than before. Population near the wetland increased as did burning and rice agriculture. The research has implications for understanding the maintenance of tropical biodiversity amidst long-term human occupation, political unrest, and climate change.

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Land cover and land use change related to shrimp farming in coastal areas of Quang Ninh, Vietnam using remotely sensed data

Cited by 29 publications

References 46 publications

Examination of land use/land cover changes, urban growth dynamics, and environmental sustainability in Chittagong city, Bangladesh

Examination of land use/land cover changes, urban growth dynamics, and environmental sustainability in Chittagong city, Bangladesh

The impacts of shrimp farming on land-use and carbon storage around Puttalam lagoon, Sri Lanka

Late Holocene Anthropogenic and Climatic Impact on a Tropical Island Ecosystem of Northern Vietnam

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