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Mangrove forest conservation and development planning
in Nghe An – Vietnam
2. OBJECTIVES
General objectives of the study are to support for conservation and plantation mangrove
forests planning in Nghe An province. This can be defined as the followed specific
objectives:
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To assess the status of mangrove forest in Nghe An
- To identify the suitable place for mangrove forest rehabilitation and plantation
- To built implementation and management framework for planned areas
The scope of the study is planning for mangrove forests rehabilitation and plantation the
coastal districts of Nghe An provinces that includes Quynh Luu, Dien Chau, Nghi Loc
districts and Vinh city
3. METHODS
3.1. GIS and Remote Sensing Application
Data collection: GPS receiver was used in field survey; status of mangrove forests was
record as well as potential areas. The data after them were updated to the map and digitized
on digital based map. Paper maps, tabular data from Department of Natural Resource and
Environment (DONRE), field trip diary and GPS database. Satellite image Landsat TM
September 2000. Aquaculture development planning digital maps from SUMA project
Data analyzing: Software used: MapInfo 6.0, AutoCAD Map 2000, ENVI 3.5. Data
from GPS have been put in to computer display on the digital maps and satellite image. Error
of the digital map and satellite image have corrected by GPS data. Planning map has to
identify two main areas: current mangrove forest areas and planning areas. Attribute data of
the planning map including area, planted species, planning species, soil type, water quality
parameters, etc. There are total five maps have produced: One overall planning map with the
scale of 1:50,000 cover all of the mangrove areas of the Province, four planning maps of
Quynh Luu, Dien Chau, Nghi Loc and Vinh district with the scale of 1:10,000
3.2. Social research
Rapid rural appraisal and interviewing questionnaires
3.3. Historical Review
- To collect and analyze natural and socio-economic data of Nghe An Province
- To analyze statistical data of socio-economic of Nghe An Province
- To analyze related reports on mangrove rehabilitation and management in the province
- To analyze laws and regulation of mangrove rehabilitation and management
3.4. Transect line survey and standard square plot
Transect line survey: using boat running along the river to collect samples of mangrove
species, reflection of the biodiversity of mangrove species and distribution. Standard Square
Plot survey to identify the density of botany species
3.5. Mangrove species classification
Main documents were used are “Common Seen Plants in Vietnam” volume I – VI (Le
Kha Ke et al, 1969 – 1976) and “Vietnamese Plants” volume I, II, III (Pham Hoang Ho 1991
– 1993). Botany species name lists were organized by alphabet systematic as Brummitt 1992
and modified follow international botany classification laws 1994 (so called Tokyo laws)
3.6. Water Quality Analysis
Method used “Standard methods for examination of water and waste water” American
Health Association 1985, the 16th publisher; “Water Quality Analysis Guide” Meteorology
Department, 1979. Transparency is measured by Sechi disk, pH by pH meter; soil pH
measured by Soil pH Machine, salinity by Salinity Refractometor.
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