Trang Etal(2014)Tam Giang Cau Hai

Tp ch

bin

khoa hc v cng ngh

2014

(T.14)3A

S c bit k nim 55 nm thnh lp

Vin Ti nguyn v Mi trng bin

(1959 - 2014)

82

Tp ch Khoa hc v Cng ngh Bin; Tp 14, S 3A; 2014: 82-88 DOI: 10.15625/1859-3097/14/3A/5182

http://www.vjs.ac.vn/index.php/jmst

NH GI SC TI MI TRNG KHU VC M PH TAM GIANG - CU HAI, TNH THA THIN - HU

Cao Th Thu Trang1*, Pham Hi An1, Tr nh Thnh2, Tr n c Thnh1, Trn Anh T1, L c Cng1

1Vin Ti nguyn v Mi trng bin-Vin Hn lm Khoa hc v Cng ngh Vit Nam 2Vin Khoa hc v Cng ngh Mi trng-Trng i hc Bch khoa H Ni

*Email: [email protected]

Ngy nhn bi: 5-8-2014

TM TT: m ph Tam Giang - Cu Hai thuc tnh Tha Thin Hu, l m ph ln nht Vit Nam v nm trong khong ta 16o1500 - 16o4200N 107o2200 - 10705700E. m ph c 216 km2 din tch mt nc, di 68 km, chiu rng 2-10 km, su trung bnh 1,6 m, ch su nht 4,2 m. m ph c hai ca thng ra bin l ca Thun An pha Bc v ca T Hin pha Nam. y l mt thy vc kn, nc l v phn tng mnh. Mi nm, m ph Tam Giang - Cu Hai tip nhn mt lng ln nc thi t 5 qun, huyn ven m ph l Phong in, Qung in, Hng Tr, Ph Vang v Ph Lc vi cc ngun nh du lch - sinh hat, nui trng thy sn, nng nghip, chn nui, cng nghip Vi s trao i nc km qua hai ca Thun An v T Hin, khi lng nc thi vo m ph tng ln s vt qu kh nng tip nhn ca n, gy tch ly cht nhim trong nc ti nng vt qu cc tiu chun mi trng. Bi bo ny trnh by v sc ti mi trng ca m ph da trn cc tnh ton t m hnh Delft-3D v cc phng php tnh ton khc. Kt qu cho thy kh nng tip nhn ca m ph l 8.980,6 tn TSS, 2.822,5 tn COD, 1.390,6 tn BOD, 44,19 tn amoni, 2,8 tn nitrit v 2,2 tn phosphat. Ti nm 2020, kh nng tip nhn ca m ph s gim i t 1,3 n 6,8 ln i vi cc thng s khc nhau. Vo thi im ny, m ph qu ti i vi cc thng s dinh dng v hu c t 2 - 5 ln v khong chc ln i vi TSS.

T kha: Sc ti mi trng, m ph, tch ly.

M U

m ph Tam Giang - Cu Hai thuc tnh Tha Thin Hu, l m ph ln nht Vit Nam, chu s nh hng trc tip ca cc hot ng nhn sinh t cc huyn v th x Phong in, Qung in, Hng Tr, Ph Vang v Ph Lc. Cc hot ng ch yu din ra ven m ph l nng nghip (trng trt v chn nui), nui trng thu sn, du lch v sinh hot ca dn c. Hng ngy, lng cht thi ven b t cc hot ng trn c thi ra v trc tip vo m ph. Cc kt qu tnh ton cho thy theo quy hoch n nm 2020 ca tnh

Tha Thin Hu th ti lng nhim ca cc ngun trn s tng t 1,3 n 1,4 ln, thm ch gp i. Liu vi lng thi hng ngy vo m ph nh vy th kh nng ti ca m ph s l bao nhiu v n mc no th n s qu ti? Bi bo ny trnh by mt s kt qu nghin cu v sc ti mi trng v kh nng tip nhn cht nhim khu vc m ph Tam Giang - Cu Hai, trn c s gip cc nh qun l mi trng ra cc gii php gim thiu nhim. PHNG PHP NGHIN CU Khu vc nghin cu

nh gi sc ti mi trng khu vc m

83

Khu vc nghin cu ca bi bo l vng nc h m ph Tam Giang - Cu Hai v vng t lin ca 5 huyn v th trn ven m

ph. Ton b khu vc nghin cu c minh ha trong hnh 1.

Hnh 1. Khu vc nghin cu Phng php nghin cu

nh gi kh nng tip nhn cc cht gy nhim nh cht hu c, dinh dng khu vc m ph Tam Giang - Cu Hai (hnh 1), s dng hai phng php: m hnh v tnh ton.

Phng php m hnh: s dng m hnh Delft 3D ca Vin Thy ng lc H Lan [1] m phng ch thy ng lc v cht lng nc ti khu vc nghin cu. Vic tnh ton v nh gi kh nng tch ly, kh nng tip nhn cc cht gy nhim ti cc khu vc Tam Giang, Thy T v Cu Hai c thc hin thng qua vic tnh ton tng khi lng cht gy nhim hin ti v so snh vi khi lng cc cht gy nhim c th tip nhn theo tiu chun Vit Nam.

Phng php tnh ton sc ti ca thu vc i vi mt s cht nhim [2, 3].

Cp = (Ctiu chun - Chin ti) V (1+ R) (1)

Trong :

Cp: kh nng ti ca thu vc vi cht nhim bn i (kg)

Ctiu chun: hm lng gii hn cho php (GHCP) ca cht trong quy chun, tiu chun (mg/l)

Chin ti: hm lng trung bnh ca cht trong khu vc (mg/l)

R: t l trao i nc/ngy (%/ngy)

V: th tch trung bnh ca thu vc (m3)

Ngoi phng php trn, cn s dng cc phng php sau:

Phng php kim k mi trng xc nh tng ngun nhim ven b a vo m ph [4, 5].

Phng php iu tra kho st bin, thc nghim ngoi hin trng v trong phng th nghim xc nh kh nng t lm sch ca thu vc theo nghin cu ca t chc JICA (Nht Bn) thc hin ti vnh H Long nm 1999.

Cao Th Thu Trang, Phm Hi An,

84

Ti li u s dng

Ngun ti liu s dng trong bi bo l cc nghin cu c thc hin ti khu vc m ph v c im a l, thu vn, cht lng mi trng, v cc thng tin kinh t x hi lin quan [6-9].

KT QU NGHIN CU V THO LUN

Kh nng tip nhn cht nhim

Trong phn ny, s dng m hnh Delft-3D [1] tnh ton kh nng tch ly cht nhim v kh nng tip nhn ca thy vc cho thi im hin ti v thi im nm 2020. i vi mi khu vc ph Tam Giang, m Sam - Thy T v m Cu Hai, tnh ton cho cc thi im nc rng, nc ln, triu cng, triu km. Bng 1 v 2 trnh by gi tr trung bnh cc kt qu tnh ton ny.

Bng 1. Khi lng cht tch ly trong nc v kh nng tip nhn cht nhim

ti m ph Tam Giang - Cu Hai thi im hin ti 2012 nm (tn)

Thng s Tch ly Tip nhn

Tam Giang m Sam-Thy t

Cu Hai Tam Giang m Sam-Thy t

Cu Hai

TSS 4.890,39 5.931,87 7.599,51 1.389,40 1.921,01 5.670,24

COD 512,59 692,04 1.107,78 664,87 780,38 1.377,15

BOD5 132,66 217,92 311,53 338,32 371,05 681,15

NH4+ 7,258 6,205 10,774 8,44 13,43 22,32

NO2- 0,991 1,161 1,924 0,58 0,80 1,40

PO43- 1,911 2,270 3,803 1,62 2,15 3,66

Bng 2. D bo khi lng cht tch ly trong nc v kh nng tip nhn cht nhim

ti m ph Tam Giang - Cu Hai thi im nm 2020 (tn)

Thng s

Tch ly Tip nhn

Tam Giang m Sam-Thy t

Cu Hai Tam Giang m Sam-Thy t

Cu Hai

TSS 5.868,45 7.118,20 9.028,75 411,33 734,64 4.165,44

COD 768,85 1.038,05 1.645,15 408,58 434,36 828,77

BOD5 199,01 326,9 462,62 271,99 262,09 526,95

NH4+ 10,887 9,307 16,000 4,81 10,33 16,98

NO2- 1,486 1,742 2,855 0,08 0,22 0,44

PO43- 2,866 3,404 5,648 0,67 1,01 1,77

Kt qu tnh ton cho thy, ti nm 2020,

kh nng tip nhn cc cht nhim ti cc thy vc s gim i t 1,3 ln n 6,8 ln, trung bnh l gim i t 2-3 ln.

Sc ti mi trng m ph Tam Giang - Cu Hai

Ti lng thi trc tip a vo m ph Tam Giang - Cu Hai

V mt a l hnh chnh th ph Tam Giang tip nhn cc ngun nhim trc tip

ca 2 x thuc huyn Phong in, 8 x thuc huyn Qung in v 2 x thuc th x Hng Tr. Huyn Ph Vang c 12 x tip gip vi m Sam - Thy T v 1 x l Vinh H tip gip vi m Cu Hai. m Cu Hai tip gip vi 8 x ca huyn Ph Lc v x Vinh H ca huyn Ph Vang. Nu coi cc n v hnh chnh ny c lng thi tng ng nhau v ch tnh ring cc ngun thi trc tip th mi ngy m ph Tam Giang - Cu Hai phi tip nhn mt lng cht thi rt ln l 26,23 tn COD, 16,79 tn BOD, 9,49 tn N-T, 1,79 tn P-T, 303,9 tn TSS (bng 3).


85

Bng 3. Ti lng nhim a vo m ph Tam Giang - Cu Hai (Tha Thin Hu)

Thng s Tn/ngy Tn/nm

Ph Tam Giang

m Sam-Thy T

m Cu Hai Tng

Ph Tam Giang

m Sam-Thy T

m Cu Hai Tng

COD 9,28 7,40 9,55 26,23 3.386,3 2.700 3.486,3 9.572,6 BOD 5,91 4,70 6,18 16,79 2.158,4 1.717 2.255,8 6.131,2 N-T 3,88 1,63 3,98 9,49 1.417,9 596 1.451,5 3.465,4 P-T 0,62 0,39 0,78 1,79 225,3 142 285,1 652,4 TSS 103,21 76,69 124,0 303,9 37.671,5 27.991 45.252,9 110.915,4

Cht lng nc m ph Tam Giang - Cu Hai

Cc kt qu kho st ca Vin Ti nguyn v Mi trng Bin cho thy, nng COD ti m ph Tam Giang kh cao, trung bnh gp 2,43 - 2,8 ln GHCP (3 mg/l) theo QCVN 10: 2008/BTNMT [10], nng amoni xp x GHCP (100 g/l), nng du vt GHCP (0,1 mg/l) t 1,55-1,85 ln, nng TSS mc xp x GHCP (50 mg/l) n vt GHCP khong 1,25 ln. y l nhng thng s thng xuyn c trong nc thi sinh hat-du lch, chn nui, nui trng thy sn.

Theo Nguyn Huy Anh, 2009 [7], nc ti ph Tam Giang c gi tr COD trung bnh l 12,15 mg/l, ln hn GHCP 4 ln, nng amoni ln hn GHCP 1,35 ln; nc ti m Sam - Thy T c gi tr COD trung bnh l 11,9 mg/l, ln hn GHCP gn 4 ln, nng amoni ln hn GHCP 1,57 ln; nc ti m Cu Hai c COD trung bnh l 15,60 mg/l, ln hn GHCP gn 5,2 ln, nng amoni chm ngng GHCP.

Cc kt qu ny cng kh tng ng vi kt qu ca Trm quan trc mi trng tnh Tha Thin Hu nm 2011. Cc kt qu nghin cu ny khng nh mi trng nc ti m ph c xu hng b nhim bi cc cht thi thng thng nh cc cht hu c, cc cht dinh dng.

Kh nng tip nhn cht nhim ti ph Tam Giang trn c s cc tiu chun mi trng

Theo cng thc (1) trn c th thy ngoi nng hin ti trong mi trng th t l trao i nc ng vai tr rt quan trng. T l ny phn nh kh nng trao i nc ca khu vc vi bn ngoi. Nng trung bnh ca cc cht nhim ti m ph Tam Giang - Cu Hai c ly theo gi tr trung bnh qua cc t

kho st. T l trao i nc v th tch trung bnh ti 3 khu vc nh ti m ph c tnh ton t m hnh Delft 3-D trong ma ma v ma kh. Trn c s , tnh c sc ti mi trng ti ph Tam Giang, m Sam - Thy T v m Cu Hai (bng 4).

T bng 4 thy rng, vi nng cht nhim nh hin ti th mi ngy ph Tam Giang ch c th tip nhn mt lng thi l 1,3 tn BOD, 2,5 tn COD, 0,0314 tn amoni, 0,0022 tn nitrit, 0,006 tn phosphat v 5,16 tn TSS khng vi phm tiu chun mi trng. Tuy nhin, tnh ton lng thi li thy rng, mi ngy ph Tam Giang phi tip nhn 5,91 tn BOD, 9,28 tn COD, 0,194 tn amoni, 0,015 tn nitrit, 0,034 tn phosphate v 103,21 tn TSS. Chnh v lng cht thi hng ngy a vo ph Tam Giang ln hn rt nhiu kh nng tip nhn ca n nn cht lng nc ca ph Tam Giang cng ngy cng suy gim. C th thy rng, vi tc thi nh hin nay th nc ph Tam Giang s vi phm hu ht cc tiu chun mi trng.

i vi m Sam - Thy T, vi nng cht nhim nh hin ti th mi ngy m Sam - Thy T ch c th tip nhn mt lng thi l 1,3 tn BOD, 2,7 tn COD, 0,047 tn amoni, 0,0028 tn nitrit, 0,0075 tn phosphat v 6,7 tn TSS khng vi phm tiu chun mi trng. Tuy nhin, tnh ton lng thi li thy rng, mi ngy m Sam - Thy T phi tip nhn 4,7 tn BOD, 7,4 tn COD, 0,082 tn amoni, 0,006 tn nitrit, 0,021 tn phosphate v 76,7 tn TSS. Chnh v lng cht thi hng ngy a vo m Sam - Thy T ln hn rt nhiu kh nng tip nhn ca n nn cht lng nc ca m c nguy c suy thoi. C th thy rng, vi tc thi nh hin nay th nng cht nhim khi nc s c xu hng tng ln v vi phm cc tiu chun mi trng.


86

Bng 4. Sc ti mi trng m ph Tam Giang - Cu Hai

Thng s BOD5 COD NH4+ NO2

- PO43- TSS

CTC (g/m3) 6 15 0,2 0,02 0,045 80

Ph Tam Giang

C hin ti (g/m3) 1,69 6,53 0,09246 0,01262 0,02434 62,3

(1+R) (%) 1,392 1,392 1,392 1,392 1,392 1,392

V (triu m3) 76,48 76,48 76,48 76,48 76,48 76,48

EC (tn) 459,0 902,0 11,452 0,786 2,2 1.884,8

EC (tn/ngy) 1,3 2,5 0,0314 0,0022 0,0060 5,16

Lng thi (tn/ngy)

5,91 9,28 0,194 0,015 0,034 103,21

t ti (%) 470,28 375,44 619,06 685,58 563,25 1.998,66

m Sam-Thy T

C hin ti (g/m3) 2,22 7,05 0,06321 0,01183 0,02312 60,43

(1+R) (%) 1,314 1,314 1,314 1,314 1,314 1,314

V (triu m3) 95,46 95,46 95,46 95,46 95,46 95,46

EC (tn) 474,1 997,0 17,2 1,0 2,7 2.454,3

EC (tn/ngy) 1,3 2,7 0,047 0,0028 0,0075 6,7

Lng thi (tn/ngy)

4,70 7,40 0,082 0,006 0,021 76,7

t ti (%) 362,15 270,79 173,66 220,97 283,67 1.140,50

m Cu Hai

C hin ti (g/m3) 1,87 6,65 0,06468 0,01154 0,02283 45,62

(1+R) (%) 1,05 1,05 1,05 1,05 1,05 1,05

V (triu m3) 163,02 163,02 163,02 163,02 163,02 163,02

EC (tn) 707,0 1.429,5 23,2 1,4 3,8 5.885,8

EC (tn/ngy) 1,9 3,9 0,063 0,004 0,010 16,1

Lng thi (tn/ngy) 6,18 9,55 0,199 0,015 0,043 123,98

t ti (%) 319,04 243,88 313,28 380,84 413,16 768,85

Ghi ch: Ti lng thi ca NH4+, NO2

-, PO43- c quy i t ti lng thi ca tng nit v tng

phosphor trong s dng h s 0,0038 i vi nitrit (ngha l nitrit chim 3,8% ca nit tng), 0,040 i vi nitrat, 0,050 i vi amoni v 0,055 i vi phosphat.

i vi m Cu Hai, c th tip nhn c khong 707 tn BOD, 1.429,5 tn COD, 23,2 tn amoni, 1,4 tn nitrit, 3,8 tn phosphate v 5.885,8 tn TSS tc l mi ngy m Cu Hai c th tip nhn 1,9 tn BOD, 3,9 tn COD, 0,063 tn amoni, 0,004 tn nitrit, 0,010 tn phosphate v 16,1 tn TSS. Nhng lng thi ra m Cu Hai mi ngy tnh trung bnh l 6,18 tn BOD, 9,55 tn COD, 0,199 tn

amoni, 0,015 tn nitrit, 0,043 tn phopshat v 123,98 tn TSS. Do so snh gia lng thi ra v kh nng tip nhn ca n th lng thi ra gp t 2 - 7 ln kh nng tip nhn ca thy vc. V vy, mc vi phm cc tiu chun mi trng ti m Cu Hai rt cao.

Kh nng t ti ti m ph Tam Giang-Cu Hai c minh ha trong hnh 2.


87

Hnh 2. Kh nng t ti ca a) ph Tam Giang; b) m Sam - Thy T; c) m Cu Hai

So snh kh nng tip nhn cht nhim ti m ph Tam Giang - Cu Hai gia phng php m hnh v tnh ton

Bng 5 trnh by kt qu nh gi kh nng tip nhn cht nhim ti m ph Tam

Giang - Cu Hai gia phng php m hnh v tnh ton cng thc. Kt qu cho thy, mc d s dng cc phng php khc nhau, nhng sai s gia hai phng php nm trong khong t 1-15%.

Bng 5. nh gi sai s gia hai phng php v kh nng tip nhn cht nhim

khu vc m ph Tam Giang - Cu Hai

Thng s

Phng php m hnh (t n) Tnh ton cng th c (tn) Sai s (%)

Tam Giang S-TT Cu Hai Tam Giang S-TT Cu Hai Tam Giang S-TT Cu Hai

TSS 1.389,4 1.921,0 5.670,2 1.884,8 2.454,3 5.885,8 -15,13 12,19 1,87

COD 664,9 780,4 1.377,2 902,0 997,0 1.429,5 -15,13 12,19 1,87

BOD5 338,3 371,1 681,2 459,0 474,1 707,0 -15,13 12,19 1,87

NH4+ 8,44 13,43 22,32 11,45 17,16 23,17 -15,13 12,19 1,87

NO2- 0,580 0,802 1,396 0,786 1,025 1,448 -15,12 12,19 1,86

PO43- 1,622 2,148 3,657 2,200 2,744 3,795 -15,14 12,18 1,86

Cc kt qu nh gi t bng 5 cho thy c

s tng ng v kt qu tnh ton, khng nh tin cy ca cc phng php p dng trong ti.

KT LUN

Cc kt qu nghin cu trong bi bo ch ra rng:

Kt qu tnh ton lng cht tch ly v kh nng tip nhn cht nhim bng m hnh Delft-3D cho thy ti nm 2020, kh nng tip nhn cc cht nhim ti cc thy vc s gim i t 1,3 ln n 6,8 ln, trung bnh l gim i t 2-3 ln.

Kt qu tnh ton sc ti ca thy vc cho thy so snh gia kh nng tip nhn v lng thi hin ti th ph Tam Giang, m Sam - Thy T, m Cu Hai qu ti vi hu ht cc thng s t 2 n 5 ln i vi nhm cht hu c v dinh dng, ngha l kh nng nng cc cht ny vt tiu chun mi trng rt

ln nu khng c bin php gim thiu v x l ngun thi.

Li cm n: Bi bo c hon thnh di s h tr ca ti TTH.2011-KC.11 v ti KC09-17/11-15. Cc tc gi xin trn trng cm n.

TI LI U THAM KH O

1. WL|Delft hydraulic, 2004. Visualisation and animation program for analysis of simulation results. Delft3D-QUICKPLOT User Manual. Delft, the Netherlands.

2. B Thu sn DANIDA/FSPS/SUMA. Ti liu hi ngh tp hun nh gi tc ng mi trng, t chc ti Ct B t ngy 4 - 8/1/2005.

3. IMO/FAO/UNESCO/WMO/IAEA/UN/ UNEP, 1986. Environmental capacity - An approach to Marine Pollution Prevention. Rome, Italia.

a b c


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4. Economopoulos, A. P., 1993. Assessment of Sources of air. Water and Land Pollution, Part One: Rapid Inventory Techniques in Environmental Pollution, WHO, Geneva.

5. UNEP, 1984. Pollutants from Land-Based Sources in the Mediterranean. UNEP Regional Seas Reports and Studies No. 32.

6. Albertazzi, S., Bellucci, L. G., Frignani, M., Giuliani, S., Romano, S., Cu, N. H., 2007. 210Pb and 137Cs in sediment of Central Viet Nam coastal lagoons: Tentative assessment of accumulation rate. Journal of Marine Science and Technology. Supplement 1, 73-81.

7. Nguyn Huy Anh, 2012. Nghin cu xy dng mng li quan trc mi trng nc m ph Tam Giang - Cu Hai, tnh Tha Thin Hu. Tp ch Khoa hc, i hc Hu, Tp 74B, S 5. Tr. 5-16.

8. Trn c Thnh, Trn nh Ln, Nguyn Hu C v inh Vn Huy, 2010. Tin ho v ng lc h m ph Tam Giang - Cu Hai. Nxb. Khoa hc T nhin v Cng ngh, H Ni. 225 tr.

9. S Khoa hc v Cng ngh Tha Thin Hu, 2004. c im Kh hu- Thu vn tnh Tha Thin Hu. Nxb. Thun Ho.

10. B Ti nguyn v Mi trng, 2008. Quy chun k thut quc gia v mi trng. Nxb. Lao ng v X hi.

ASSESSMENT OF ENVIRONMENTAL CARRYING CAPACITY OF TAM GIANG - CAU HAI LAGOON, THUA THIEN - HUE PROVINCE

Cao Thi Thu Trang1, Pham Hai An1, Trinh Thanh 2,

Tran Duc Thanh1, Tran Anh Tu 1, Le Duc Cuong1 1Institute of Marine Environment and Resources-VAST

2Institute for Environmental Science and Technology-HTU

ABSTRACT: Tam Giang - Cau Hai lagoon in Thua Thien - Hue Province is the biggest lagoon in Viet Nam and located in the geographic coordinate 1601500 - 1604200N - 10702200 - 10705700E. The lagoon has surface of 216 km2, length of 68 km, wide of 2 - 10 km and average depth of 1.6 m, with the deepest point being is 4.2 m. There are two inlets that exchange water mass with sea: Thuan An inlet in the North and Tu Hien inlet in the South. The lagoon is closed, brackish-water and strongly stratifies. Every year, Tam Giang - Cau Hai lagoon receives a large amount of wastewater from 5 coastal districts Phong Dien, Quang Dien, Huong Tra, Phu Vang and Phu Loc with different waste sources such as living activities - tourism, aquaculture, livestock, industry With the low water exchange through two inlets Thuan An and Tu Hien, the more wastewater discharged into the lagoon, the more pollutants accumulated in the water and it results in their concentration being over environmental strandards. This paper presents the environmental carrying capacity of the lagoon based on calculations from Delft-3D model and other calculated methods. It is indicated that, the received capacity of the lagoon is 8980.6 tons of TSS, 2822.5 tons of COD, 1390.6 tons of BOD, 44.19 tons of ammonium, 2.8 tones of nitrite and 2.2 tons of phosphate. Until 2020, the received capacity will reduce from 1.3 - 6.8 times with different parameters. At the moment, the environmental carrying capacity of the lagoon is overloaded with nutrients and organic matters from 2 - 5 times and ten times with TSS.

Keywords: Environmental Carrying Capacity, lagoon, accumulation.

TP CH KHOA H C V CNG NGH BIN Tp 14, S 3A - 9-2014

MC LC

Li ni u

Bin ng a hnh sn b ngm khu vc ca sng Vn c - Thi Bnh t nm 1930 n nm 2003 Nguyn nh Khang

1

Hin trng bin ng a hnh bi bin Tr C, Quan Ln v Bi Tin theo ma Nguyn c V, Th Thu Hng, Bi Vn Vng

12

Phn kiu bin i a hnh v cc h sinh thi vng ven bin Qung Ninh phc v khai thc ti nguyn v bo v mi trng Nguyn Vn Tho, ng Vn Bo

23

M phng c im bin ng a hnh vng ca sng ven b sng M Kng V Duy Vnh, Trn nh Ln, Trn Anh T, Nguyn Th Kim Anh

30

Sc p ca s pht trin kinh t - x hi n mi trng ti khu vc ca sng Bch ng Lu Vn Diu, Nguyn Th Phng Hoa

42

Phn b kim loi nng trong mt s m mm ca c i Mugil sp. vng ca sng Bch ng L Quang Dng, H Th Bnh

51

c im cc yu t kh tng hi vn c bn vng bin o Bch Long V Nguyn Minh Hi, Trn Anh T

58

Thay i ngun lng vt liu trm tch hin i h thng sng Hng: tip cn t nghin cu khong vt st Bi Vn Vng, Zhifei Liu, Trn c Thnh, V Duy Vnh, Chih-An Huh, Nguyn c V

67

Hin trng cht lng mi trng nc vng ven b t Qung Ninh n Qung Bnh nm 2013 Dng Thanh Ngh, Cng Thung

76

nh gi sc ti mi trng khu vc m ph Tam Giang - Cu Hai, tnh Tha Thin - Hu Cao Th Thu Trang, Phm Hi An, Trnh Thnh, Trn c Thnh, Trn Anh T, L c Cng

82

nh gi mc tn thng mi trng vng b bin Tha Thin - Hu Trn nh Ln, Th Thu Hng, Nguyn c V

89

Nguy c tch t hydrocacbon a vng thm (PAHs) trong mt s sinh vt bin vng ven b Hi Phng - Qung Ninh Phm Th Kha

97

a dng sinh hc ng vt y vng ven cc o chnh bin Vit Nam Cng Thung, L Th Thy, Vn Khng

103

a dng sinh hc thc vt ph du vng ven b vnh H Long - Bi T Long, Qung Ninh Chu Vn Thuc, Nguyn Th Minh Huyn, inh Vn Nhn, Dng Thanh Ngh, Xavier Mari

113

a dng di truyn qun x vi khun trong lp mng b mt bin (marine surface microlayer) khu vc H Long, Vit Nam Phm Th Th, Chu Vn Thuc, Xavier Mari

125

Qun x ng vt ph du ven o Cn C Nguyn Th Thu, inh Vn Nhn, V Mnh Hng

135

a dng sinh hc khu h c m Ni, tnh Ninh Thun Nguyn Vn Qun, Nguyn Th Hng Lin, o Minh ng

143

Mt s c im sinh hc ca chng vi khun xy ha ammonium phn lp t vng ven bin Hi Phng L Thanh Huyn, o Th nh Tuyt, Mnh Ho

152

Bin ng qun x vi sinh vt trn san h b bnh di trng (white flague) vng ven o Ct B - Long Chu, Hi Phng Phm Th Th

159

Hm lng v sc ng ca agar trong rong cu Cc (Gracilaria bailinae Zhang et Xia) trng th nghim ti Hi Phng m c Tin

170

Kt qu lu gi rong cu Cc (Gracilaria bailinae Zhang et Xia) qua v ng ti Hi Phng m c Tin

176

Bin ng mt vi khun vng ven bin vnh H Long - Bi T Long, tnh Qung Ninh Chu Vn Thuc, Nguyn Th Minh Huyn, Phm Th Th, Sophie Marro, Markus Weinbauer, Xavier Mari

183

Tm hiu bc u v kh nng hp th carbon v mt s mui dinh dng ca rong M (Sargassum sp.) ti vng ven o Bch Long V L Quang Dng, Nguyn Th Minh Huyn, Phm Vn Chin, Dng Thanh Ngh, Trn nh Ln

196

p dng phng php Triad trong nh gi ri ro sinh thi vi rn san h khu vc o Bch Long V, Hi Phng Nguyn Th Thu H, Trn nh Ln

203

Nhn dng cc nhm gi tr hng ha v dch v c cung cp t cc h sinh thi bin Bch Long V, Hi Phng Nguyn Th Minh Huyn, Trn nh Ln, Trn c Thnh, Nguyn Th Thu, L Quang Dng, Bi c Quang

212

Hin trng c bin khu vc ven b Ty vnh Bc B Cao Vn Lng, m c Tin, Cng Thung

223

Dn liu mi v thnh phn loi v tim nng dc liu san h mm (b: Alcyonacea) o Cn C, Qung Tr u Vn Tho

230

Hin trng thnh phn, mt phn b trng c, c bt nhm c rn san h khu bo tn bin Ph Quc, tnh Kin Giang ng Hng Vit, Nguyn Vn Qun, Nguyn c Th, Phm Vn Chin

238

c im thnh phn loi v phn b ca trng Lng bi (b Tintinnida) vnh H Long inh Vn Nhn, Chu Vn Thuc, Nguyn Xun Qunh, Xavier Mari

244

nh hng ca mui n sinh trng v t l sng ca Ngn (Eamesiella corrugata) cc giai on t veliger n spat Nguyn Xun Thnh, Phm ng Tun

254

ng dng m hnh thc nghim nh gi kh nng tch ly thy ngn ca nghu Meretrix lyrata ti ca sng Bch ng, Hi Phng L Xun Sinh

261

Danh sch thnh phn loi h c i (Mugilidae) phn b trong h m ph ven bin min Trung Nguyn Th Hng Lin, Nguyn Vn Qun, Jean-Dominique Durand

268

Mt s c im sinh hc c bn ca loi Vch (Chelonia mydas) ti Cn o, Vit Nam Chu Th Cng

274

Khu bo tn bin Quc gia Bch Long V - tim nng v gii php pht huy gi tr Trn c Thnh, Nguyn Vn Qun, Trn nh Ln, Nguyn Th Minh Huyn, inh Vn Huy

281

M phng lan truyn cht hu c COD ven o Bch Long V bng m hnh ton Phm Hi An, Trn Anh T, V Duy Vnh

292

Lp bn phn vng mc tn thng mi trng vng b bin Tha Thin - Hu do ngp lt Th Thu Hng, Trn nh Ln

302

ng dng cng ngh WEBGIS trong xy dng v qun tr c s d liu ti nguyn v mi trng bin tnh Thanh Ha Bi Mnh Tng

309

M hnh ton nghin cu vng c cc i ven b sng M Kng V Duy Vnh, Trn nh Ln, Trn Anh T, Nguyn Th Kim Anh

317

JOURNAL OF MARINE SCIENCE AND TECHNOLOGY Vol. 14, No. 3A - September 2014

CONTENTS

Foreword

The terrain fluctuations underwater of Van Uc - Thai Binh estuaries from 1930 to 2003 Nguyen Dinh Khang

1

Status of seasonal changes in beach topography in Tra Co, Quan Lan and Bai Tien Nguyen Dac Ve, Do Thi Thu Huong, Bui Van Vuong

12

Zoning topography and ecosystem change in the coastal area of Quang Ninh province to serve resources exploitation and environmental protection Nguyen Van Thao, Dang Van Bao

23

Simulation of characteristic of morphological change in the Me Kong estuary-coastal area Vu Duy Vinh, Tran Dinh Lan, Tran Anh Tu, Nguyen Thi Kim Anh

30

The pressures of socio-economic development activities on the environment of Bach Dang estuary area Luu Van Dieu, Nguyen Thi Phuong Hoa

42

Distribution of heavy metals in soft tissues of the mullet Mugil sp. from Bach Dang estuary Le Quang Dung, Ha Thi Binh

51

Characteristics of meteorological and hydrological factors of Bach Long Vy island through each period Nguyen Minh Hai,Tran Anh Tu

58

Variation in recent sedimentary discharge of Red river system: approach to studying clay mineral Bui Van Vuong, Zhifei Liu, Tran Duc Thanh, Vu Duy Vinh, Chih-An Huh, Nguyen Dac Ve

67

The environmental status of water quality from Quang Ninh to Quang Binh province in 2013 Duong Thanh Nghi, Do Cong Thung

76

Assessment of environmental carrying capacity of Tam Giang - Cau Hai lagoon, Thua Thien - Hue province Cao Thi Thu Trang, Pham Hai An, Trinh Thanh,Tran Duc Thanh, Tran Anh Tu, Le Duc Cuong

82

Estimation of environmental vulnerability for Thua Thien - Hue coastal area Tran Dinh Lan, Do Thi Thu Huong, Nguyen Dac Ve

89

Accumulation of polycyclic aromatic hydrocarbon in some marine organisms in Hai Phong - Quang Ninh coastal area Pham Thi Kha

97

Zoobenthos biodiversity in coastal areas of islands in Vietnams sea Do Cong Thung, Le Thi Thuy, Do Van Khuong

103

Biodiversity of phytoplankton in the Ha Long bay - Bai Tu Long coastal waters, Quang Ninh province Chu Van Thuoc, Nguyen Thi Minh Huyen, Dinh Van Nhan, Duong Thanh Nghi, Xavier Mari

113

Genetic diversity of bacterial community in marine surface microlayer at Ha Long bay, Vietnam Pham The Thu, Chu Van Thuoc, Xavier Mari

125

Zooplankton community at the coastal ecosystems of Con Co island Nguyen Thi Thu, Dinh Van Nhan, Vu Manh Hung

135

Biodiversity of the ichthyofauna in Dam Nai lagoon, Ninh Thuan province Nguyen Van Quan, Nguyen Thi Huong Lien, Dao Minh Dong

143

Some biological characteristics of ammonium oxidizing bacteria strain isolated in Hai Phong coastal zone Le Thanh Huyen, Dao Thi Anh Tuyet, Do Manh Hao

152

Variation of microbial community in the corals having white plague disease at Cat Ba - Long Chau island, Hai Phong Pham The Thu

159

Contents and condenced feature of agar in Gracilaria bailinae Zhang et Xia, in experimental condition at Hai Phong city Dam Duc Tien

170

Result of storage of Gracilaria bailinae Zhang et Xia over winter season in Hai Phong city Dam Duc Tien

176

Variation in density of bacteria in the coastal waters of Ha Long bay - Bai Tu Long, Quang Ninh province Chu Van Thuoc, Nguyen Thi Minh Huyen, Pham The Thu, Sophie Marro, Markus Weinbauer, Xavier Mari

183

Primary study on carbon fixation and nutrient uptake by seaweed Sargassum spp. in Bach Long Vy island sea area Le Quang Dung, Nguyen Thi Minh Huyen, Pham Van Chien, Duong Thanh Nghi, Tran Dinh Lan

196

Applying the triad method in ecological risk assessment for coral reef of Bach Long Vy island, Hai Phong Nguyen Thi Thu Ha, Tran Dinh Lan

203

Identifying the types of valuable goods and services provided by marine ecosystems in Bach Long Vy island, Hai Phong Nguyen Thi Minh Huyen, Tran Dinh Lan, Tran Duc Thanh, Nguyen Thi Thu, Le Quang Dung, Bui Duc Quang

212

Seagrass of the western coastal zone of the Gulf of Tonkin, Vietnam Cao Van Luong, Dam Duc Tien, Do Cong Thung

223

New data on the species composition of soft corals and medicinal potential in con co island, Quang Tri province Dau Van Thao

230

The status of component, distribution density of fish eggs and larvae of coral reef fish groups in Phu Quoc marine protected areas, Kien Giang province Dang Do Hung Viet, Nguyen Van Quan, Nguyen Duc The, Pham Van Chien

238

Species composition characteristic and variability of tintinnid ciliates (Oder Tintinnida) in Ha Long bay Dinh Van Nhan, Chu Van Thuoc, Nguyen Xuan Quynh, Xavier Mari

244

Effects of salinity on the growth and survival of mud clam (Eamesiella corrugata) in the stages from veliger to spat Nguyen Xuan Thanh, Pham Dang Tuan

254

Application of experimental model to assess accumulation of mercury in Meretrix lyrata hard clam at Bach Dang estuary, Hai Phong Le Xuan Sinh

261

The checklist of species composition in the mullet family (Mugilidae) distrubuting in coastal lagoons of central provinces Nguyen Thi Huong Lien, Nguyen Van Quan, Jean-Dominique Durand

268

Reproductive characteristics of green turtle (Chelonia mydas) in Con Dao, Vietnam Chu The Cuong

274

Bach Long Vy national marine protected area: potential and solutions for promoting values Tran Duc Thanh, Nguyen Van Quan, Tran Dinh Lan, Nguyen Thi Minh Huyen, Dinh Van Huy

281

Simulating the spread of organic matter - cod around Bach Long Vy island by mathematical model Pham Hai An, Tran Anh Tu, Vu Duy Vinh

292

Mapping environmental vulnerablity zoning due to flood in the coastal areas of Thua Thien - Hue province Do Thi Thu Huong, Tran Dinh Lan

302

Applying WEBGIS technology to environment and resources database management of Thanh Hoa province Bui Manh Tuong

309

A numerical model to study maximum turbidity zones in Me Kong estuary coastal area Vu Duy Vinh, Tran Dinh Lan, Tran Anh Tu, Nguyen Thi Kim Anh

317

Documents

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