CONCLUSION AND RECOMMENDATIONS
CONCLUDE
The topic has investigated the present
eardrum
area
Xuan Thuy National Park meets all criteria
Based on the results of the silvicultural (D, H, N, biomass, etc.), the assessment results show that the RNM in the research area is showing signs of degradation and will continue to become more serious in the future, in both quantity and quality. The regeneration of forest plants is taking place but is still slower than the rate of degradation.
The model run results showed a decrease in individual density and biomass of
species over time
Species composition in the study area is still quite poor, with 2 main plant species (2 official mangrove species: Sonneratia, Trang and 01 additional mangrove species: Su). The number of Trang species is still absolutely dominant and dense because it is planted for the purpose of soil retention, wave protection, and coastal protection.
The project proposed forest planning according to sea level rise scenarios at the time points 2030, 2050, 2100 with the respective areas being: 2,042 ha; 3,623 ha; 4,732 ha, divided into 3 stages as follows:
- Period 2011-2030: Maintain strictly protected forest area (1,206 ha) and increase afforestation and forest restoration in existing aquaculture areas, by 2030 the area will have 3,623 ha of mangrove forest land.
- Phase 2030 - 2050: continue to expand the area of strictly protected forests,
Promote afforestation and forest restoration, by 2050 the region will have 3,623 hectares of mangrove forest land.
- Period 2050 - 2100: expand the area of strictly protected forests, promote afforestation, by 2100 the region will have 4,732 hectares of mangrove forest land.
RECOMMENDATION
Developing a detailed plan for planting and managing mangrove forests in Xuan Thuy National Park
The study recommends planting more new species suitable for the region's climatic conditions.
The study proposes a thinning solution to create space for natural RNM regeneration.
It is necessary to study and build a bank to preserve and conserve plant species that once existed and developed in the area.
Building a legal framework and policy mechanisms to support the conservation and development of mangrove forests.
Continued research on modeling the impact of environmental factors on growth and development fluctuations of CNM species in all regions across the country.
Continued Xuan Thuy.
like research for seriousness
Model results at the National Park
REFERENCES
Vietnamese
1. Ministry of Natural Resources and Environment, 2009. Climate change and sea level rise scenarios for Vietnam
2. Ministry of Natural Resources and Environment, 2011. Climate change and sea level rise scenarios for Vietnam
3. Nguyen Thi Kim Cuc (2004). Sociology of mangrove plants in Thuy Truong commune, Thai Thuy district, Thai Binh province.
4. Nguyen Van Cu (1984). Characteristics of water level fluctuations in coastal areas of Vietnam, Collection of Earth Sciences
5. Nguyen Duc Cu (1996). Tidal wetland changes in the estuary of the Red River Delta, Journal of Earth Sciences
6. Le Dien Duc (2009). Wetland ecosystem management. Graduate training materials (CRES)
7. Luu Duc Hai (2009). Environmental science foundation, Hanoi National University Publishing House
8. "Nguyen My Hang and Phan Nguyen Hong (1995). Studying the effects of low temperature on the growth of some species in the family Rhizophora
(Rhizophraceae) experimental planting, National workshop on restoration and management of mangrove ecosystems in Vietnam, Hai Phong."
9. Nguyen Hoan (1996). Research on topographic changes and the formation process of sandbanks in the Red River estuary (Ba Lat estuary), Institute of Geography, University of Natural Sciences
10. Pham Hoang Ho (1960). Ecology and geography of submerged plants
11. Phan Nguyen Hong (1984). Assessment of mangrove ecosystem resources and the role of forests in marine resources, Scientific Conference on Mangrove Ecosystem
12. Phan Nguyen Hong (1984). Results of the survey of mangrove flora in Vietnam, Scientific conference on mangrove ecosystem in Vietnam,
13. Phan Nguyen Hong (1999). Vietnam's mangrove forests, Agriculture Publishing House.
14. Phan Nguyen Hong (1991). Assessment of the impact of ecological factors on the distribution of RNM
15. Phan Nguyen Hong (1991). Ecology of mangrove forests in Vietnam, PhD thesis in Biology, Hanoi National University of Education
16. Phan Ke Loc, Nguyen Tien Hiep (1998). Some data on plants in Xuan Thuy Nature Reserve,
17. Nguyen Phuong Nga (1980). Initial research on water regime of some CNM species
18. Le Thi Phuong (1980). Initial study of some ecological characteristics of mangrove plants related to salt regime.
19. Vu Trung Tang (1993). Estuarine ecosystems of Vietnam, Science and Technology Publishing House.
20. Tran Thuc, Duong Hong Son (2012). Rising sea levels and their impacts on Vietnam,
21. Dang Trung Tan (1994). Silvicultural developments on land use types of Minh Hai flooded forest
22. Dao Van Tan and Tran Van Ba (2004). Effects of low temperature on growth and survival rate of Sonneratia caseolaris planted in Giao Thuy, Nam Dinh
23. Center for Geotechnical Engineering and Technology, Special Report on Transforming the Structure of Reasonable Use of Resources in Xuan Thuy National Park Area,
24. Mai Sy Tuan, Phan Nguyen Hong, (1984). Some ecological characteristics of species in the genus Mam
25. Mai Sy Tuan (1995). Effects of salinity on germination, growth and photosynthesis of Avicennia marina
26. Nam Dinh Provincial People's Committee (2004). Planning for management, protection and development of Xuan Thuy National Park,
English
27. Berger, U. and H. Hildenbrandt (2000). A new approach to spatially explicit modeling of forest dynamics: spacing, aging and neighborhood competition of mangrove trees
28. Berninger, F. and E. Nikinmaa (1997). Implications of varying pipe model relationships on scots pine growth in different climates
29. Botkin, D.B. (1993). Forest dynamics. An Ecological Model. Oxford University Press
30. Chapman. VJ (1976). Mangrove vegetation, Auckland University NewZealand
31. Chen, R. and R.R. Twilley (1998). A gap dynamic model of mangrove forest development along gradients of soil salinity and nutrient resources. Journal of Ecology 86, 37-51
32. Ellison, J. (1993). Mangrove Retreat with Rising Sea-level. Bermuda, Estuarine. Coastal and Shelf Science, 37: 75-87.
33. Islam MR (2004). Where Land Meets the Sea: A Profile of the Coastal Zone of Bangladesh. Dhaka: University Press Limited
34. Luan, J., R.I. Muetzelfeldt, and J. Grace (1996). Hierarchical approach to forest ecosystem simulation. Ecological Modeling 86, 37.
35. Mladenoff, D. and W. Baker (1999). Spatial modeling of forest landscape change: approaches and applications. Cambridge University Press
36. Hoang Anh Nguyen (2011). A model for predicting mangrove forest dynamics under variable environmental conditions - A Case study of the Estuary of Dongnai - Saigon River system, Vietnam
37. Semeniuk, V. (1994). Predicting the Effect of Sea-level Rise on Mangroves in Northwestern Australia. Journal of Coastal Research, 10(4): 1,050-1,076
APPENDIX
TT | H (cm) | Diameter (mm ) | Note | OTC |
1 | 22 | 1 | Page | 1 |
2 | 26 | 1.15 | Page | 1 |
3 | 39.2 | 0.75 | Page | 1 |
4 | 30.6 | 0.9 | Page | 1 |
5 | 28.6 | 1.1 | Page | 1 |
6 | 19.3 | 0.8 5 | Page | 1 |
7 | 31 | 0.9 | Page | 1 |
8 | 34.3 | 1.15 | Page | 1 |
9 | 25.9 | 0.65 | Page | 1 |
10 | 27 | 1, 2 | Page | 1 |
11 | 20 | 1 , 2 | Sonneratia | 1 |
12 | 26 | 1.7 | Sonneratia | 1 |
13 | 27.5 | 1 , 5 | Sonneratia | 1 |
14 | 28 | 1 , 4 | Sonneratia | 1 |
15 | 23 | 1.3 | Sonneratia | 1 |
16 | 21.5 | 1.1 | Sonneratia | 1 |
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TT | H (cm) | Diameter (mm ) | Note | OTC |
17 | 18.5 | 0.7 | Page | 2 |
21 | 1.1 | 62 | Page | 3 |
22 | 1.2 | 42 , 5 | Page | 3 |
23 | 1 | 48 | Page | 3 |
24 | 1.7 | 94.5 | Page | 3 |
25 | 0.9 | 60.5 | Page | 3 |
26 | 1.25 | 17.6 | Page | 3 |
27 | 1.1 | 65.5 | Page | 3 |
28 | 0.7 | 26.4 | Page | 3 |
29 | 1 | 68.5 | Page | 3 |
30 | 1.2 | 78.6 | Page | 3 |
31 | 1.3 | 55 | Page | 3 |
32 | 0.7 | 39 | Page | 3 |
33 | 0.65 | 20.3 | Page | 3 |
34 | 0.8 | 65.5 | Page | 3 |
Appendix 1: Growth indicators of plants in strip 1 Growth measurement chart of seedlings in strip 1
Growth measurement chart of tall trees in Tape No. 1
TT | D0.3 (D1.3) | H (cm) | H tan (cm) | D tan (cm) | Note | OTC |
1 | 4 | 355 | 85 | 45 | Page | 1 |
2 | 6.6 | 367 | 87 | 56 | Page | 1 |
3 | 3.2 | 369 | 68 | 63 | Page | 1 |
4 | 3.4 | 303 | 62 | 71 | Page | 1 |
5 | 3.5 | 400 | 79 | 64 | Page | 1 |
6 | 3.1 | 368 | 82 | 62 | Page | 1 |
7 | 4 | 346 | 48 | 80 | Page | 1 |
8 | 4.2 | 360 | 70 | 65 | Page | 1 |
9 | 3.4 | 368 | 90 | 64 | Page | 1 |
10 | 2.4 | 304 | 71 | 59 | Page | 1 |
11 | 3.1 | 359 | 49 | 72 | Page | 1 |
12 | 4.4 | 360 | 81 | 71 | Page | 1 |
13 | 3.3 | 367 | 66 | 46 | Page | 1 |
14 | 2.4 | 354 | 63 | 57 | Page | 1 |
15 | 3 | 355 | 59 | 57 | Page | 1 |
19 | 2.5 | 352 | 69 | 84 | Page | 1 |
20 | 1.7 | 380 | 43 | 35 | Page | 1 |
21 | 2.1 | 356 | 73 | 66 | Page | 1 |
22 | 2.6 | 353 | 63 | 60 | Page | 1 |
23 | 4 | 367 | 118 | Sonneratia | 2 | |
24 | 3.7 | 345 | 136 | Sonneratia | 1 | |
25 | 2.9 | 291 | 114 | Sonneratia | 1 |
TT | D0.3 (D1.3) | H (cm) | H tan (cm) | D tan (cm) | Note | OTC |
26 | 1, 5 | 167 | 93 | Sonneratia | 1 | |
27 | 1.2 | 165 | 83 | Sonneratia | 1 | |
28 | 3 | 343 | 115 | Sonneratia | 1 | |
29 | 3.6 | 379 | 159 | Sonneratia | 1 | |
30 | 5.1 | 458 | 73 | 63 | Page | 2 |
31 | 3 | 462 | 77 | 76 | Page | 2 |
32 | 3.7 | 453 | 62 | 52 | Page | 2 |
33 | 4.6 | 472 | 113 | 100 | Page | 2 |
34 | 5.6 | 481 | 83 | 112 | Page | 2 |
35 | 3.1 | 467 | 93 | 83 | Page | 2 |
36 | 3.7 | 471 | 80 | 71 | Page | 2 |
37 | 3.6 | 471 | 81 | 61 | Page | 2 |
38 | 3.3 | 461 | 49 | 55 | Page | 2 |
39 | 5.7 | 476 | 80 | 150 | Page | 2 |
40 | 4.6 | 469 | 76 | 87 | Page | 2 |
41 | 6.3 | 491 | 64 | 145 | Page | 2 |
42 | 5.2 | 483 | 63 | 107 | Page | 2 |
43 | 3.2 | 469 | 72 | 94 | Page | 2 |
44 | 4.7 | 496 | 87 | 106 | Page | 2 |
45 | 4.4 | 481 | 70 | 66 | Page | 2 |
46 | 3.1 | 473 | 56 | 75 | Page | 2 |
47 | 4 | 474 | 39 | 100 | Page | 2 |
TT | D0.3 (D1.3) | H (cm) | H tan (cm) | D tan (cm) | Note | OTC |
48 | 5.1 | 472 | 69 | 124 | Page | 2 |
49 | 4.2 | 475 | 78 | 74 | Page | 2 |
50 | 6.3 | 502 | 88 | 150 | Page | 2 |
51 | 4 | 497 | 80 | 99 | Page | 2 |
52 | 5.4 | 491 | 75 | 106 | Page | 2 |
53 | 3.8 | 472 | 55 | 94 | Page | 2 |
54 | 3.9 | 471 | 59 | 82 | Page | 2 |
55 | 3.3 | 482 | 63 | 72 | Page | 2 |
56 | 4 | 475 | 68 | 65 | Page | 2 |
57 | 5.1 | 469 | 68 | 96 | Page | 2 |
58 | 2.7 | 472 | 54 | 61 | Page | 2 |
59 | 5.6 | 466 | 81 | 127 | Page | 2 |
60 | 5.2 | 452 | 76 | 140 | Page | 2 |
61 | 4 | 470 | 75 | 67 | Page | 2 |
62 | 4.1 | 469 | 74 | 76 | Page | 2 |
63 | 3.8 | 463 | 76 | 91 | Page | 2 |
64 | 5.5 | 485 | 71 | 135 | Page | 2 |
65 | 2.4 | 440 | 26 | 38 | Page | 2 |
66 | 5 | 488 | 58 | 112 | Page | 2 |
67 | 4.5 | 472 | 66 | 120 | Page | 2 |
68 | 3.8 | 478 | 63 | 84 | Page | 2 |
69 | 2.6 | 470 | 50 | 78 | Page | 2 |
70 | 3.4 | 475 | 60 | 95 | Page | 2 |
TT | D0.3 (D1.3) | H (cm) | H tan (cm) | D tan (cm) | Note | OTC |
71 | 4.4 | 472 | 55 | 67 | Page | 2 |
72 | 4.2 | 474 | 67 | 115 | Page | 2 |
73 | 5 | 481 | 54 | 125 | Page | 2 |
74 | 4.4 | 436 | 49 | 33 | Page | 2 |
75 | 4 | 493 | 72 | 91 | Page | 2 |
76 | 3.6 | 479 | 75 | 77 | Page | 2 |
77 | 5.3 | 495 | 89 | 134 | Page | 2 |
78 | 4.6 | 491 | 71 | 86 | Page | 2 |
79 | 4.3 | 493 | 77 | 92 | Page | 2 |
80 | 3.6 | 491 | 60 | 87 | Page | 2 |
81 | 3.9 | 482 | 76 | 89 | Page | 2 |
82 | 4.4 | 492 | 92 | 117 | Page | 2 |
83 | 4.6 | 483 | 71 | 80 | Page | 2 |
84 | 3.6 | 484 | 68 | 67 | Page | 2 |
85 | 4.5 | 493 | 68 | 110 | Page | 2 |
86 | 4.2 | 483 | 78 | 116 | Page | 2 |
87 | 3.1 | 468 | 78 | 100 | Page | 2 |
88 | 5 | 484 | 64 | 40 | Page | 2 |
89 | 3 | 437 | 42 | 105 | Page | 2 |
90 | 2.6 | 450 | 48 | 55 | Page | 2 |
91 | 4.4 | 490 | 82 | 114 | Page | 2 |
92 | 5.6 | 490 | 84 | 148 | Page | 2 |
93 | 6.4 | 520 | 100 | 138 | Page | 2 |





