Cyclone and Storm Surge - Iczmpwb.org
Cyclone and Storm Surge - Iczmpwb.org Cyclone and Storm Surge - Iczmpwb.org
6.45 paludosa, Rhizophora apiculata,Sonneratia apetala, Nypa fruiticans Aecjiceras carn.iculatum, Excoecaria aqallocha, Seeds are generally sown. Mostly Avicennia species are sown all over the area. Then seeds are available in Sundarban Tiger Project and 24- Parganas(S) Division. 4. Seeds Collection: Ripe and Mature seeds are available in July to September. Only Avicennia Marina seeds are available in October. Excoecaria agallocha, Nypa fruiticans seeds are available in January. It is better to collected ripe and meture seeds. Seeds are collected with the help of fine fishing nets during high-tide & low-tide in Kotal Sometimes seeds are collected from inside the forest on the river bank during kotal. 5. Stores of Seeds: It is better to procure these seeds & sow immediately as it is not possible to preserve these seeds for more than 7 to 15 days. However seeds may be preserved for a year through nursery. 6. Planting: The planting of the various species should be done according to the following guidelines: a) Avicennia species are better panted the entire trench at a distance of 50 cm. and on the upper region which is not watered by tide-water. Ceriops species, Bruguiera spp, Xylocarpus spp, Excoecaria spp, Heritiera spp, phoenix spp, should be planted in trench at a distance of 1 mt. and in pit at a distance of 2 mt. b) On the lower region which is regularly watered by tide water everyday. Sonneratia apetala Aegiceras Carniculatum Rhizophora apiculata, Nypa fruitecans are planted in pits. It is better to plant them in Trench at a distance of 2 mt. c) If the region is under the lower tide and is muddy then three types of Avicennia spp and Sonneratia apetala may be planted for good plantation. d) Seeds are generally sown twice or thrice time in a year. There is a time when either all the seeds are not available or most seeds are carried away by tide. 7. Nursery Seedling: This is to be done in the following way: a) Direct sowing is done in Nursery beds i.e. Sonneratia apetala. b) Polypots is filled by the earth in the bed on which Heritiera formes Bruguiera (Gymnorhiza & parviflora) Ceriops (decandra, tagal), Xylocarpus (Granaturn, Makongensis), Nypa fruiticans, Rhizophora apiculata etc. are sown. 8. Use of seedlings: Seedlings are used in the following ways:: a) Vacancies are filled in the plantation.
6.46 b) Seedlings are planted during December and January when tides and waves are not so strong in the river. Some of the species and their seeding and flowering times are provided in the following table: Sl. No. Species Local Name Flowering time Seedling time l. Avicennia Alba Paira Bain April July 2. Avicennia Marina Kalo Bain June October 3. Avicennia Officinalis Jat Bain April July 4. Heritiera Formes Sundari March July 5. Bruguiera Gymnorhiza Kankra April July 6. Bruguiera Paruiflora Ban Bakul April July 7. Xylocarpus Granateria Dhudul April August 8. Xylocarpus Mankongensis Pasur April July 9. Aegiceras Carniculatum Khalsi March July 10. Aegialitis Rotandifolia Tora March July 11. Rhizophora Apiculata Garjan April August 12. Sonneratia Apiculata Keora April September 13. Excoecaria Agollacha Genwa March July 14. Ceriops Decandra Garan March July 15. Ceriops Tagal Math Garan March July 16. Phoenix Paludosa Mental March July 17. Nypa Fruiticans Golpata July February The growth of the above mentioned species of mangroves (from the first to the fifth year) are as follows: Height in metres Sl. Species No. 1 st yea 2 nd year 3 rd year 4 th year 5 th year 1. Avicennia alba 0.89 2.68 2.88 3.55 5.90 2. Avicennia Marina 0.80 2.60 2.80 3.50 5.80 3. Avicennia Officinalis 0.88 2.65 2.85 3.55 5.85 4. Heritiera formes 0.45 0.75 0.86 0.95 1.20 5. Bruguiera Gymnorhiza 0.59 0.88 0.98 1.12 2.00 6. Bruguiera Baruiflora 0.55 0.78 0.91 1.10 1.90 7. Xylocarpus Granatum 0.90 2.55 2.90 3.60 6.00 8. Xylocarpus mankongensis 0.80 1.25 1.40 2.42 2.98 9. Aegiceras carniculatum 0.55 0.65 0.80 0.95 1.15 10. Aeqiceras rotandifolia 0.40 0.48 0.70 0.90 1.05 11. Rhizophora apiculata 0.80 1.25 1.40 2.42 2.98 12. Sonneratia apetala 0.90 2.55 2.90 3.60 6.00 13. Excoecaria agollacha 0.65 0.80 0.90 1.10 1.25 14. Ceriops decandra 0.28 0.43 0.53 0.64 0.75
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6.46<br />
b) Seedlings are planted during December <strong>and</strong> January when tides <strong>and</strong> waves are not<br />
so strong in the river.<br />
Some of the species <strong>and</strong> their seeding <strong>and</strong> flowering times are provided in the following table:<br />
Sl. No. Species Local Name Flowering<br />
time<br />
Seedling<br />
time<br />
l. Avicennia Alba Paira Bain April July<br />
2. Avicennia Marina Kalo Bain June October<br />
3. Avicennia Officinalis Jat Bain April July<br />
4. Heritiera Formes Sundari March July<br />
5. Bruguiera Gymnorhiza Kankra April July<br />
6. Bruguiera Paruiflora Ban Bakul April July<br />
7. Xylocarpus Granateria Dhudul April August<br />
8. Xylocarpus Mankongensis Pasur April July<br />
9. Aegiceras Carniculatum Khalsi March July<br />
10. Aegialitis Rot<strong>and</strong>ifolia Tora March July<br />
11. Rhizophora Apiculata Garjan April August<br />
12. Sonneratia Apiculata Keora April September<br />
13. Excoecaria Agollacha Genwa March July<br />
14. Ceriops Dec<strong>and</strong>ra Garan March July<br />
15. Ceriops Tagal Math Garan March July<br />
16. Phoenix Paludosa Mental March July<br />
17. Nypa Fruiticans Golpata July February<br />
The growth of the above mentioned species of mangroves (from the first to the fifth year) are as<br />
follows:<br />
Height in metres<br />
Sl.<br />
Species<br />
No.<br />
1 st yea 2 nd year 3 rd year 4 th year 5 th year<br />
1. Avicennia alba 0.89 2.68 2.88 3.55 5.90<br />
2. Avicennia Marina 0.80 2.60 2.80 3.50 5.80<br />
3. Avicennia Officinalis 0.88 2.65 2.85 3.55 5.85<br />
4. Heritiera formes 0.45 0.75 0.86 0.95 1.20<br />
5. Bruguiera Gymnorhiza 0.59 0.88 0.98 1.12 2.00<br />
6. Bruguiera Baruiflora 0.55 0.78 0.91 1.10 1.90<br />
7. Xylocarpus Granatum 0.90 2.55 2.90 3.60 6.00<br />
8. Xylocarpus mankongensis 0.80 1.25 1.40 2.42 2.98<br />
9. Aegiceras carniculatum 0.55 0.65 0.80 0.95 1.15<br />
10. Aeqiceras rot<strong>and</strong>ifolia 0.40 0.48 0.70 0.90 1.05<br />
11. Rhizophora apiculata 0.80 1.25 1.40 2.42 2.98<br />
12. Sonneratia apetala 0.90 2.55 2.90 3.60 6.00<br />
13. Excoecaria agollacha 0.65 0.80 0.90 1.10 1.25<br />
14. Ceriops dec<strong>and</strong>ra 0.28 0.43 0.53 0.64 0.75
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