Methods of Surveying Biodiversity and Identifying Potential Species for Dlst Development


2.4. Research methods

2.4.1. Methodology

From the perspective of ecotourism, it is a branch of sustainable tourism aiming at three main goals including social equity, economic development and environmental integrity (TIES, 2015). Ecotourism development, biodiversity conservation and people's participation are interrelated. The topic approaches the research contents as follows: Firstly , the approach is based on selective inheritance of socio-economic data, biodiversity status from reliable reporting sources. Secondly, the topic uses a systemic approach from the perspective that potential adaptive zones for ecotourism development are natural systems and human factors that interact with each other. Therefore, to determine an adaptive zone for ecotourism, it must be built based on natural factors such as altitude, slope, visibility, biodiversity; human factors such as population; cultural factors such as cultural sites, etc. Third , the participatory approach in this topic is demonstrated through interviews with local people in communes of Cat Ba. People actively participate and answer interview questions through questionnaires. In addition, the topic also uses expert methods to evaluate the thematic layers for building adaptive zones for ecotourism as well as the weights for these thematic layers.

2.4.2. Method of assessing the current status of DLST

The current status of ecotourism development in national parks/reserves is often assessed through the contents of infrastructure, technical facilities, organizational structure, tourists, and routes. In this content, the topic uses the route survey method and interview method to assess the current status of ecotourism in Cat Ba National Park. Specifically as follows:

Linear investigation method

The project conducted a survey and evaluation of 16 ecotourism routes currently being exploited in Cat Ba National Park. During the survey, information on the routes


The points recorded and described include: starting and ending points of the route, route length, tourist attractions, sign systems, habitats, etc. These are important criteria to evaluate the organization and attractiveness of the exploited routes.

Interview method

The project conducted interviews with officials of the National Park, local people and tourists to assess the current status of ecotourism development. The information collected included the organizational structure of the National Park, the current status of tourists, and the difficulties and advantages in implementing tourist routes.

2.4.3. Methods of investigating biodiversity and identifying potential species for ecotourism development

In this content, the topic uses the method of inheriting data from specialized reports on forest flora and fauna surveys and combining additional surveys on flora, fauna and insects. Specifically, the inherited documents include: Pham Van Dien and Vu Quang Nam (2015); Introford and Cat Ba National Park (2021). The inherited data will be processed in the direction of assessing the potential of biodiversity for ecotourism development such as diversity of vegetation, diversity of flora and fauna species.

In addition, the researcher also directly participated in the survey by route and point to determine the location and evaluate the potential for ecotourism development of some species of animals and plants in Cat Ba National Park such as Cat Ba langur, Serow, Cat Ba gecko. Potential wildlife species for ecotourism development are evaluated based on the criteria: Endemism, endangeredness and easy to detect. In this topic, only the potential for wildlife species is focused on evaluating because this is an activity that is rarely exploited in Cat Ba National Park and moreover, it is a basic feature and attracts tourists to ecotourism development.

2.4.4. Questionnaire survey method

This method is used by the topic to collect data related to the research content on the current status of tourism development and evaluate the participation of the community.


community participation in ecotourism development as well as their awareness and attitude towards ecotourism development and biodiversity conservation. To collect data related to these contents, the project conducted surveys of 215 people, including 30 leaders and staff of Cat Ba National Park, 155 people from 5 communes and 1 town inside and outside the National Park, and 30 tourists.

The interviewer conducted direct interviews with the respondents through questionnaires. The selection of interviewees was completely random. The interviewer walked along the streets in the commune and interviewed the people in that household every house. The questions were designed in closed and open form (see details in Appendix 8). During the interview, the unqualified questionnaires were eliminated (5 questionnaires) and only qualified questionnaires (200 questionnaires) were used for data analysis.

2.4.5. Expert method

The expert method was used in the project to collect data related to the content of identifying potential ecotourism areas in Cat Ba National Park as well as the content of proposing solutions for ecotourism development associated with biodiversity conservation in Cat Ba National Park. The project consulted 12 experts, including 03 experts in the field of ecotourism, 04 experts in the field of biodiversity conservation, 02 experts in the field of GIS, 02 experts in the field of silviculture and social forestry. Specifically as follows:

- Seeking opinions from experts on theoretical and practical issues on the relationship between "Tourism Development" and "Biodiversity Conservation"; assessments and comments on the potential for ecotourism development; advantages, difficulties, positive and negative aspects of tourism development in research topics as well as recommendations and solutions on ecotourism development associated with biodiversity conservation to ensure sustainable development of Cat Ba National Park in the thesis's Research Synthesis Report.


- Ask for opinions from experts or people with knowledge in the field of ecotourism and biodiversity conservation to score the selected criteria, thereby determining the importance of each criterion. The project asked for opinions from experts on the importance of criteria such as visibility, forest status, protection level, species diversity, slope, altitude, accessibility to transportation networks, accessibility to cultural sites, and accessibility to surface water sources.

- Synthesize opinions of experts, managers, and scientists on research issues at conferences, seminars, and thematic discussions.

2.4.6. Method of assessing potential areas for ecotourism development

To study the content of evaluating potential areas for ecotourism development in Cat Ba National Park, the topic used GIS and Analytical Hierarchy Method (AHP). GIS-based multi-criteria analysis has been widely used in the decision-making process in a number of fields such as environmental and ecological planning, resource management, forestry, urban and regional planning, hydrology and water resources management, disaster management, transport planning, agriculture, tourism and education. The application of GIS techniques to map ecotourism potential has been applied by various scholars around the world because of its ability to collect, store, retrieve, manage, display and analyze spatial data (Sahani, 2019). The author used different thematic map layers such as visibility, terrain, elevation, slope, vegetation, access to surface water, proximity to roads, proximity to villages, and groundwater levels to assess the suitability of ecotourism. In this study, the author's approach (Sahani, 2019) was used to carry out this content. The specific steps are shown in Figure 3.1, detailed below:



Figure 2.1. Diagram of steps to determine suitable areas for ecotourism development

* Step 1: Prepare data source

The input image data required for processing has been collected from two main sources such as satellite images and available maps. Information about the spatial data sources used in the project is presented in Table 3.1.

Table 2.1. Spatial data sources


Element

Source

Ratio/resolution

prize


Vision

SRTM DEM and viewshed analysis

(Digital elevation model map of Cat Ba National Park)

3m; map scale 1/25,000

Forest status

Forest status map 2020

Cat Ba National Park

Scale 1/25,000

Level of protection

Current map of functional zoning

Cat Ba National Park

Scale 1/25,000

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Element

Source

Ratio/resolution

prize


Species diversity

Map of current status of functional zoning of Cat Ba National Park and resource map

Cat Ba National Park biodiversity


Scale 1/25,000


Slope

SRTM DEM

(Digital elevation model map of Cat Ba National Park

3m; map scale 1/25,000


Elevation

SRTM DEM

(Digital elevation model map of Cat Ba National Park

3m; map scale 1/25,000

Accessibility

transport network

Road system map

in Cat Ba National Park area

Scale 1/25,000

Accessibility

cultural sites

Current land use map, map

Location map of residential areas in Cat Ba National Park

Scale 1/25,000

Accessibility

surface water

Topographic map of communes

Cat Hai district

1/10,000 scale


* Step 2: Choose a specialized class

The first step of this research involves selecting elements or thematic layers. To identify potential ecotourism areas, the study used four main elements that characterize ecotourism development, including: natural conditions, biodiversity resources, cultural resources, and transportation systems. The study then further subdivided these elements into thematic layers such as visibility, forest status, species diversity, slope, elevation, protection level, accessibility to transportation networks, accessibility to cultural sites, and accessibility to surface water sources (Table


3.2). The factors that create the potential for ecotourism in Cat Ba National Park were selected based on their importance, expert opinions and inheritance from previous research documents (Kumari et al. 2010; Mahdavi and Niknejad 2014; Gul et al. 2006; Bunruamkaew and Murayama 2011; Introford, 2021).

* Step 3: Create geospatial database

Thematic maps on visibility, forest status, species diversity, slope, elevation, protection level, accessibility to transport networks, accessibility to cultural sites, and accessibility to surface water sources are built according to specific criteria. Specifically as follows:

Visibility is the most important factor for ecotourism development. To analyze the suitability of ecotourism site development, visibility of scenic spots and tourist attractions was taken into account because the visibility of these landscapes is positively correlated with tourist arrivals. The spatial analysis of visibility was performed using the visibility analysis tool in ArcGIS environment using SRTM DEM and location data of scenic spots and tourist attractions. These spots were reclassified into categories such as clear, medium, unclear and invisible based on the nature of visibility.

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Table 2. 2. Factors and criteria used in the analysis of suitability for DLST


Criteria

Unit

Evaluate the suitability of the coefficients

Very suitable

Fit

Less suitable

Inappropriate


Vision

Distance (landscape view)


Near the


Between the vision


Out of sight


Not visible


Forest status


Class


Rich forest


Medium forest

Poor, exhausted forest

Forests without reserves, bare land and

plantation forests of all kinds

Level of protection

Ha

High (BVNN)

Moderate (PHST)

Low (DVHC and

Inner Buffer Zone)

No (Buffer Zone)

outside)

Species diversity

% of recorded species

>30%

20-30%

5-20%

<5%

Accessibility

surface water

M

<700

700-1,500

1,500-2,500

>2,500

Elevation

M

0-150

150-250

250-300

>300

Slope

Degree

0-5 0

5-25 0

25-35 0

>35 0

Accessibility

cultural sites

Km

0-1

1-2

2-3

>3


Road accessibility


Km

The width of the range from the road to both sides is 1km (each side 0.5

km)

The width of the range from the road to both sides is 2 km (each side 1.0

km)

The width of the range from the road to both sides is 4 km.

(2 km each side)


Out of range of the above (>4 km)

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