Number of Pages: 84

IUCN funded Project Economic Analysis and Environment Impact Assessment of Water-based Economic Activities in Tam Giang – Cau Hai Lagoon, Thua Thien Hue Province

FINAL DRAFT REPORT

Submitted to IUCN Vietnam By Faculty of Economics and Development Studies Hue College of Economics 100 Phung Hung, Hue

Hue, August 2008

PROJECT SUMMARY

Implementing Agency Faculty of Economics and Development Studies Hue College of Economics

Address: 100 Phung Hung, Hue Telephone: 84- 54 538332, Fax: 84-54 8536290

Research Team: Asso. Prof, Dr. Mai Van Xuan Dr. Bui Dung The Mr. Tran Minh Tri Mr. Nguyen Huu Tuan Mr. Tran Duc Kien

Project duration From March to August, 2008

Project site Tam Giang – Cau Hai Lagoon, Thua Thien Hue

TABLE OF CONTENT

INTRODUCTION
1. Background
2. Research Objectives
RESEARCH METHODS
1. Economic analysis
2. Environmental impact assessment
OVERVIEW OF TAM GIANG - CAU HAI LAGOON
1. Background
  1. Location
  2. Hydrography and Current in TG-CH lagoon
  3. Population and Infrastructure
  4. Biodiversity
  5. Irrigation Construction and Environmental Impacts in TG-CH lagoon
2. Water based-economic activities in TG-CH lagoon
  1. Agricultural production
  2. Aquaculture
  3. Fishing activities
  4. Water-way transportation
  5. Ecotourism and recreation
  6. Sampan people and livelihood
  7. Other activities
AQUACULTURE IN TAM GIANG – CAU HAI LAGOON
1. Introduction
2. Aquaculture production of surveyed households in Quang Dien district
  1. Aquaculture calendar techniques
  2. Demographic characteristics of aquacultural households
  3. Production equipment for aquaculture activity of the surveyed households
  4. Water surface use
  5. Economics of aquaculture
    1. Aquaculture costs
    2. Aquacultural yield
    3. Results and economic effects of aquaculture
  6. Modeling influential factors on aquaculture
  7. Marketing
3. Impacts of Aquaculture on lagoon environment
4. Conclusion and recommendation
  1. Conclusion
  2. Recommendation and policy implication
FISHING ACTIVITIES
1. Overview on fishing activities in Tam Giang-Cau Hai lagoon
  1. Introduction
  2. Fishing gears in the lagoon
2. Fishing season and fishing gears of the surveyed households
  1. Fishing season and operation
  2. Demographics of the surveyed households
3. Economic analysis of fishing activities in the lagoon
  1. Costs of fishing activity
  2. Captured fish yield and income
4. Fishing activities and adverse impacts on lagoon environment
5. Conflicts in management and access to lagoon resources
6. Conclusions and recommendations
  1. Conclusions
  2. Recommendations
PADDY PRODUCTION
1. Overview of Paddy Production in Lagoon areas
  1. Total Area, Productivity and Yield
  2. Paddy cropping calendar and production techniques
2. Demograpic characteristics of surveyed households
  1. Manpower of surveyed households
  2. Land used pattern and production means
3. Gross margin analysis of paddy production
  1. Cost
  2. Output and efficiency of paddy production
  3. Modeling influential factors on paddy productivity
4. Market
  1. Input market
  2. Output market
5. Paddy production and its impacts on paddy production
  1. Pesticides and Chemical Fertilizers in paddy production
  2. Environmental impact assessment of paddy production
6. Conclusion
7. Recommendation
APPENDIX
REFERENCE

TABLE OF TABLE

Table 1: Household sample and focus group discussion
Table 2. Water surface of Tam Giang-Cau Hai Lagoon by District
Table 3: Demographics of aquaculture households
Table 4: Production equipment for aquaculture of the surveyed households
Table 5: Aquaculture area of surveyed households
Table 6: Aquaculture costs of the surveyed households
Table 7: Aquaculture yield
Table 8: Gross margin of aquaculture in lagoon
Table 9: Results of Production Function for semi-intensive shrimp model
Table 10: The result of regression model for improved-extensive shrimp model
Table 11: Aquaculture and Impacts on lagoon environment
Table 12: Number of fishing gears used in Tam Giang-Cau Hai lagoon
Table 13: Main fishing gears used for fishing activities in surveyed communes
Table 14: Calendar and fishing time
Table 15: Means and fishing gears available in lagoon
Table 16: Common characteristics of the surveyed fishing households
Table 17: Fishing cost
Table 18: Yield and value of captured fish in the lagoon (average/household)
Table 19: Income generated from fishing activities (average/household)
Table 20: Analysis result of income affective factors from fishing activities
Table 22: Local opinions about variation of fishery resources in the lagoon
Table 23: Variations in aquatic species in the lagoon
Table 23: Area, productivity, and yield of paddy production in TG-CH lagoon in 2006
Table 24: Demographic characteristics of surveyed households
Table 26: Costs of paddy production
Table 27: Cash costs in cash in paddy production
Table 28: Efficiency of paddy production (per ha)
Table 29: Estimated economic value of paddy production in TG-CH lagoon
Table 30: Result of Cobb-Douglass production for spring crop
Table 31: Result of Cobb-Douglass production for autumn crop
Table 32: Input market for paddy production
Table 33: Paddy distribution of surveyed
Table 35: Opinion on the use of chemicals in paddy production
Table 36: Impacts of chemical components on the quality of water in lagoon

TABLE OF FIGURES

Figure 1: The location of communes in Tam Giang - Cau Hai Lagoon
Figure 2: Aquaculture production in TG-CH lagoon
Figure 3: The number of fish cages in Tam Giang - Cau Hai lagoon
Figure 4: Aquaculture Calendar in Quang Dien (main Crops)
Figure 5: Map of Aquaculture area distribution in Tam Giang - Cau Hai lagoon and the slices to take samples for CLN analysis (1998-2004)
Figure 6: Supply Chain of Tiger Shrimp in Quang Dien
Figure 7: Supply chain for caged fish in Quang Dien
Figure 8: Concentration of N-NO 3 in shrimp ponds, and surrounding areas in Quang An, Quang Dien
Figure 9: Variation in COD component in Tam Giang Lagoon in dry season and rainy one from 1998 to 2004