Changes in mangrove vegetation area and character in a war and land use change affected region of Vietnam (Mui Ca Mau) over six decades

Van, T. T.; Wilson, Nigel H. M.; Thanh-Tung, H.; Quisthoudt, Katrien; Quang-Minh, V.; Xuan-Tuan, L.; Dahdouh‐Guebas, Farid; Koedam, Nico

doi:10.1016/j.actao.2014.11.007

Cited by 75 publications

(43 citation statements)

References 58 publications

(58 reference statements)

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“…After a few years, the land was degraded, and farmers continued cutting down mangrove forests and making new shrimp ponds. This is also found in reports concerning mangroves in the South Central and Mekong Delta regions, where most natural mangrove forests were cut down for firewood and converted to rice paddy fields and salt fields in the previous period or converted into shrimp farms in the later period [12,13].…”

Section: Linkage Among Local Livelihoods and Mangrove Forestssupporting

confidence: 60%

“…In 2014, the mangrove forest area reduced to 85,000 ha with much lower biodiversity and biomass and made up a very small percentage of what was natural forest [12,21]. Loss due to herbicide attacks during the Vietnam War, overexploitation, conversion into aquaculture and typhoons [3], encouraged by land management policies are being partially counteracted by natural regeneration and replanting, especially a gradual increase in plantations as part of integrated mangrove-shrimp farming systems [9,10,13,14]. Moreover, natural disasters such as hurricanes, floods, and sea-level rise have also contributed to mangrove deforestation [15,16,23].…”

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confidence: 99%

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Understanding the Status and Challenges of Mangrove Conservation in Central Vietnam: Case Study in Duy Xuyen District, Quang Nam Province

2019

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While mangrove forests support large surrounding populations and diverse economic activities, the mangrove areas in Central Vietnam are decreasing. This study, therefore, aims to understand the current status and threats encountered with mangrove conservation and development. A survey of 52 respondents was conducted in Duy Xuyen district, the largest area of mangrove forests of Quang Nam province. The results show that 17 mangrove species belong to 11 families, in which 8 significant species and 9 minor species were found in this site. The distribution of species is uneven with Nipah palms (Nypafruticans Wurmb) dominating the area. Although the mangrove species have several useful functions, such as protection against wind and wave break and tourism development, mangrove areas have been decreasing from 26.39 ha to 18.22 ha from 1999 to 2018. 67.3% of respondents claim that the conversion of mangroves to aquaculture is one of the main causes of mangrove loss. The study also provides some suggestions concerning a long-term development strategy for both the government and the local community, especially those directly dependent on the mangrove for their livelihoods.

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Section: Linkage Among Local Livelihoods and Mangrove Forestssupporting

confidence: 60%

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confidence: 99%

Understanding the Status and Challenges of Mangrove Conservation in Central Vietnam: Case Study in Duy Xuyen District, Quang Nam Province

2019

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“…In Southern Thailand, about 50 % of the total mangrove area has been converted to shrimp aquaculture and other forms of coastal development during with less than 10 % left on the east coast (Thampanya et al 2006). In the Mui Cau Mau, Vietnam, mangrove forests have decreased drastically from 71,345 hectares to 33,083 hectares during the period 1953-1992, but in 2011, an increase to 46,712 hectares was reported due to replanting as part of integrated mangrove-aquaculture system (Van et al 2015).…”

Section: Introductionmentioning

confidence: 98%

Mangrove forest decline: consequences for livelihoods and environment in South Sulawesi

2016

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Mangrove forests in the tropics and subtropics grow in saline sediments in coastal and estuarine environments. Preservation of mangrove forests is important for many reasons, including the prevention of coastal erosion and seawater intrusion; the provision of spawning, nursery, and feeding grounds of diverse marine biota; and for direct use (such as firewood, charcoal, and construction material)-all of which benefit the sustainability of local communities. However, for many mangrove areas of the world, unsustainable resource utilization and the profit orientation of communities have often led to rapid and severe mangrove loss with serious consequences. The mangrove forests of the Takalar District, South Sulawesi, are studied here as a case area that has suffered from degradation and declining spatial extent during recent decades. On the basis of a postclassification comparison of change detection from satellite imagery and a survey of households, we provide an estimate of the mangrove change in the Takalar District during 1979-2011 and the consequences of those changes. Mangrove forest areas were reduced by 66.05 % (3344 hectares) during the 33-year period of analysis, and the biggest annual negative change in dense mangrove forest cover (8.37 %) occurred during the period 2006-2011. The changes were caused mainly by the mangrove clearing and conversion to aquaculture, and consequences have been increasing forest degradation, coastal abrasion, seawater intrusion, a decline in fish capture, a reduction in juvenile shrimp and milkfish, and outbreaks of shrimp disease. On the other hand, the clearing and impoundment of mangrove forests for shrimp and seaweed culture have provided a source of foreign exchange and new opportunities for employment in the study area.

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“…As a result, 52 % of dense mangroves at the tip of Ca Mau were destroyed (Hong and San, 1993). In the study area, bare waste land area increased about 10 times from 2003 ha in 1953 to 21 964 ha in 1975 ( Van et al, 2014), with a similarity to the flight paths of spray missions delivering Agent Orange and Agent White during the war (Stellman et al, 2003). After this time, forests in the affected areas have consisted mainly of secondary growth, much of it scrubby, and plantations (FAO, 2007).…”

Section: Erosion Along the East Seamentioning

confidence: 99%

Application of remote sensing and GIS for detection of long-term mangrove shoreline changes in Mui Ca Mau, Vietnam

et al. 2014

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Abstract. Mui Ca Mau at the southern tip of Vietnam supports a large area of mangroves and has a high value for biodiversity and scenic beauty. This area is affected by erosion along the East Sea and accretion along the Gulf of Thailand, leading to the loss of huge stretches of mangroves along the East Sea and, in some cases, loss of environmental and ecosystem services provided by mangroves. In this study, we used remotely sensed aerial (1953), Landsat (1979Landsat ( , 1988Landsat ( and 2000 and SPOT (1992SPOT ( , 1995SPOT ( , 2004SPOT ( , 2008SPOT ( , 2009SPOT ( and 2011 images and the Digital Shoreline Analysis System (DSAS) to quantify the rate of mangrove shoreline change for a 58 yr period. There were 1129 transects sampled at 100 m intervals along the mangrove shoreline and two statistical methods, namely end point rate (EPR) and linear regression rate (LRR), were used to calculate the rate of change of mangrove shorelines and distance from 1953 to 2011. The study confirms that erosion and accretion, respectively, are significant at the East Sea and Gulf of Thailand sides of Mui Ca Mau. The East Sea side had a mean erosion LRR of 33.24 m yr −1 . The accretion trend at the Gulf of Thailand side had an average rate of 40.65 m yr −1 . The results are important in predicting changes of coastal ecosystem boundaries and enable advanced planning for specific sections of coastline, to minimize or neutralize losses, to inform provincial rehabilitation efforts and reduce threats to coastal development and human safety.

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Changes in mangrove vegetation area and character in a war and land use change affected region of Vietnam (Mui Ca Mau) over six decades

Cited by 75 publications

References 58 publications

Understanding the Status and Challenges of Mangrove Conservation in Central Vietnam: Case Study in Duy Xuyen District, Quang Nam Province

Understanding the Status and Challenges of Mangrove Conservation in Central Vietnam: Case Study in Duy Xuyen District, Quang Nam Province

Mangrove forest decline: consequences for livelihoods and environment in South Sulawesi

Application of remote sensing and GIS for detection of long-term mangrove shoreline changes in Mui Ca Mau, Vietnam

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