THAI NGUYEN UNIVERSITY
UNIVERSITY OF AGRICULTURE AND FORESTRY
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TRAN VAN MUOI
EVALUATING THE EFFECTIVENESS OF SOME FORESTRY PLANTING MODELS IN BAO LAC DISTRICT,
CAO BANG PROVINCE
MASTER'S THESIS IN FORESTRY
Thai Nguyen - 2020
THAI NGUYEN UNIVERSITY
UNIVERSITY OF AGRICULTURE AND FORESTRY
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TRAN VAN MUOI
EVALUATING THE EFFECTIVENESS OF SOME FORESTRY PLANTING MODELS IN BAO LAC DISTRICT,
CAO BANG PROVINCE
Industry: Forestry
Industry code: 8.62.02.01
MASTER'S THESIS IN FORESTRY
Scientific supervisor: Dr. DUONG VAN THAO
Thai Nguyen - 2020
COMMITMENT
I hereby declare that this is my own research work. The data and research results presented in this thesis are true and have never been published in any other work.
I certify that any help received in preparing this thesis has been acknowledged and all sources used in the thesis have been duly acknowledged./.
Thesis author
Tran Van Muoi
ACKNOWLEDGEMENTS
During the process of studying and implementing the topic, I have received the most favorable support, valuable comments and guidance from groups and individuals inside and outside Thai Nguyen University of Agriculture and Forestry. First of all, I would like to sincerely thank Dr. Duong Van Thao, who directly guided and helped me throughout the time of researching the topic and completing the thesis. I would like to sincerely thank the enthusiastic support of the People's Committee of Bao Lac district and other relevant agencies and departments for creating conditions for me to collect data and necessary information to carry out this thesis.
I would like to express my sincere and deep gratitude for that valuable and dedicated help!
Thank you very much!
Thesis author
Tran Van Muoi
INDEX
INTRODUCTION 1
1. Problem statement 1
2. Research objective 2
3. Meaning of topic 2
CHAPTER 1. DOCUMENT OVERVIEW 4
1.1. In the world 4
1.1.1. Research results on site 4
1.1.2. Research results on breed 5
1.1.3. Research results on the effects of density 6
1.1.4. Research results on the effects of fertilization on the growth and productivity of planted forests 7
1.1.5. Research results on market policy 8
1.2. In Vietnam 9
1.2.1. Research results on site 10
1.2.2. Research results on breed 11
1.2.3. Research results on the effects of tillage methods. 15
1.2.4. Research results on the effects of fertilization on the growth and productivity of planted forests 16
1.2.5. Research results on the effects of density 18
1.2.6. Research results on policy, economy and market .. 19 1.3. General assessment 23
1.4. Natural and socio-economic conditions of the research area 24
1.4.1. Natural conditions 24
1.4.2. Economic and social conditions 25
CHAPTER 2. OBJECTS, CONTENT AND METHODS OF RESEARCH 32
2.1. Research object and scope 32
2.1.1. Research subjects 32
2.1.2. Scope of research 32
2.2. Research content 32
2.2.1. Current status of Acacia hybrid forestation in Bao Lac district, Cao Bang province... 32
2.2.2. Evaluation of the effectiveness of Acacia hybrid plantations in Bao Lac district, Cao Bang province 33
2.2.3. Recommended solutions for developing Acacia hybrid plantation in Bao Lac district, Cao Bang province 33
2.3. Research methods 33
2.3.1. General method 33
2.3.2. Specific research methods 34
2.3.3. Data processing method 37
CHAPTER 3. RESEARCH RESULTS AND DISCUSSION 42
3.1. Current status of Acacia hybrid forestation in Bao Lac district, Cao Bang province 42
3.1.1. Conditions for planting Acacia hybrid forests in Bao Lac district, Cao Bang province. 42 3.1.2. Summary of Acacia hybrid forest planting models 44
3.1.3. Seed source for planting Acacia hybrid in Bao Lac district, Cao Bang province ..50
3.1.4. Techniques for planting and caring for planted forests in Bao Lac district, Cao Bang province 51
3.1.5. Evaluation of advantages and difficulties in planting Acacia hybrid forests in Bao Lac district, Cao Bang province 55
3.2. Growth, productivity and carbon stocks of Acacia hybrid plantations in Bao Lac district, Cao Bang province 56
3.2.1. Growth and productivity of 5-year-old hybrid Acacia plantations 56
3.2.2. Growth and productivity of 7-year-old hybrid Acacia plantations 57
3.2.3. Growth and productivity of 10-year-old hybrid Acacia plantations 58
3.2.4. Carbon stocks of Acacia hybrid forests in Bao Lac district, Cao Bang province 59
3.2.5. Summary of economic and technical indicators of Acacia hybrid forest planting models in Bao Lac district, Cao Bang province 62
3.3. Evaluation of the effectiveness of Acacia hybrid plantation in Bao Lac district 65
3.3.1. Economic efficiency 65
3.3.2 Social efficiency 67
3.4. Recommended solutions for developing Acacia hybrid plantation 71
3.4.1. Technique 71
3.4.2. Policy 72
CONCLUSION AND RECOMMENDATIONS 75
1. Conclusion 75
2. Existence 76
3. Recommendation 77
REFERENCES 78
APPENDIX ............................................................ .
LIST OF TABLES
Table 2.1. Number of OTCs established in the study area 35
Table 3.1. Summary of information on natural conditions in Bao Lac district, Cao Bang province 43
Table 3.2. Area of Acacia hybrid plantation in Bao Lac district, Cao Bang province ... 46 Table 3.3. Area of Acacia hybrid at research sites
not defined.
Table 3.4. Summary of hybrid Acacia plantation models at the research site... 48 Table 3.5. Growth and productivity of 5-year-old hybrid Acacia plantations in Bao Lac district, Cao Bang province 57
Table 3.6. Growth and productivity of 7-year-old Acacia hybrid plantations in Bao Lac district, Cao Bang province 58
Table 3.7. Growth and productivity of 10-year-old Acacia hybrid plantations in Bao Lac district, Cao Bang province 59
Table 3.8. Carbon reserves in individual trees of BV10 variety at 7 years old stage in Bao Lac district, Cao Bang province 60
Table 3.9. Carbon stocks of 7-year-old BV10 plantation forests in Bao Lac district, Cao Bang province 61
Table 3.10. Summary of BV10 hybrid Acacia afforestation model in Bao Lac district... 63 Table 3.11. Summary of economic and technical indicators of models according to business time 64
Table 3.12. Summary of costs, income and economic efficiency of BV10 hybrid Acacia plantations in Bao Lac Cao Bang 66
Table 3.13. People's awareness of the effectiveness of afforestation in the survey area 69
Table 3.14. Number of laborers created from 1 hectare of Acacia hybrid plantation in Bao Lac district, Cao Bang province 70