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V I.S N TRUNG T A M KHOA N G H I~ N HQC CUU V Ie T B I~ N NAM HAl PH 0N G alor yen •• va r i V le N TRUNG KHOA T A M N G H Ia N HOC V Ie T CUU NAM B II!N H A l P H O N G TAl NGUYEN VA MOl TRU'ONG BIEN (TOM TAT CAC CONG TRiNH NGHIEN c o u 1986 - 1990) NHA XUAT BAN KHOA HA N (> I - HQC 1991 vA K Y T H U !T M()C L()C T rang UTi g /& i /h i~ u ZYXWVUTSRQPONMLKJIHGFEDCBA N O i dung b a n d o d ia th e m vung m a o, 1 ,1 cd j a V i~ t c a u t ru c + -h ln h th a i, huang ty N am I ~ /2 0 Sa lu e c d a n h g ia hi e n M O t s6 d~ c d i e m d ja tr a n g d a i b o b ie n m ao v itn g b i~ n Ha iPh H ln h K im a t r ie u H ~ Ia c h th a i, dai pha n b6 i Ph b e b ie n H a T r l1 n D ue Y uan tra m tlc h va d~c d ie m ng co ta y v j n h D an ban Ba c t lie u v~ a Tung muo n t tr l i e u v i~ n C at H uy, M O t s6 V ie t Ba T r l1 n D ue b l)i Va i 26 H uy, tu b a N guy~n i b l)i H ew yen b ie n h u y e n cua cac b b n tie h D in h t1 ,l h ie n L ( ln , da N guy~n i t ie u D ue b ie u a T r lln D ue d~c Thonh da i yen 39 h a th a p bc yen rm r c ba c dO ng b ie n vao V ie t cu6i H o lo x e n g ifra -d Ilu d ie m dj a hoa tr a m Thonh H o l o x en 48 N am tic h rirn g ng ap m an T en D ue b ie n Thonh m ie n B lic N am net Phan 54 v~ t r a rn b6 cua V lin D c tic h ba i tr l e u la y Y en b to i ta o s ilic c tia B a tro n g t rn tic h ie n C hu be H ili H O t, T r u n g N guy~n m a t v itn g yen sO ng Y en Q uang b ie n Co 60 T 'u a « t ir c ir a L~t III ( F o r a m in ife r a ) th b D ue P h o n g -c Q u a n g 67 T r lln chau CLr bO N guy~n 11 _ Thonh Y en V iln 13 19 N guy~n 10 th a m C u e in g V i~ t i-s ; H uy V iln 33 D i;ic d ie m bo th a i San T ran g ia V lI n D in h D in h Phom H O i, qu6e o ng+Q ua ThQ nh San, o ng qua C hu D in h trb -h ln h Thanh N guy~n ch am 000 N guy~n tro n g m ot s6 d a ng tic h tu th u o c D ue da i Thonh T e ll bo tio« CLr H ong 73 N guy~n 155 and others.fedcbaZYXWVUTSRQPONMLKJIHGFEDCBA A p p lic a tio n of r e m o le s e n s in g M.C Gupta m o n ito r in g Nguyen Chu h i~ n of c o a s ta l e n v ir o n m e n t H(}i va nnk tr q n g in ilC iu sir d r tn g Bu& c tu te c h n iq u e s ISRO India, In d ia li~ u v i~ n fo r 1989 ila n h TSRQPONMLKJIHGFE g ia th o m b ie n hgfedcbaZYXWVUTSRQPONMLKJIHGFEDCBA H ( i i P h o n g Tai nguyen va rnoi truong bien, ven Ha i Q u a n , s 6 /1 9 Tr~n Due Thl1-nh va nnk Ba o cao luu f)la c h a t trf! ta i Trung - ilia tam m(1O ddi Nghi en ciru N am B a c V t~ t Hai Phorig, ven ber bien, 1985 SUMMARY PRELIMINARILY HAIPHONG ASSESSING COASTAL THE ZONE BY PRESENT REMOTE STATUS SEr~SING The c o v e r in g The changes e r o s io n a l and th e a u th o r s s e r ie s have of of H a iP h o n g a n a ly s is and m a jo r c o a s ta l g e o m o r p h ic and estuarine of im a g e r y c o a s ta l L andsat d e p o s itio n a l MQT a s tu d y s e n s in g in H a iP h o n g o b je c ts ln pursued r e m o te in order to Cuong w e ila n d s c o a s ta l an d by e v a lu a te zone im a g e r y in d ic a te d z one d u r in g 1976 - s ig n ific a n t coast - lin e 1986" c o m p le x of w ere n o tic e d , fe a tu r e s have b e r e d e s c r ib e d V U 'O 'N V ie t d is c o v e r changes so f>k-c Hoi C k« N guyen N guyen v a r io u s OF DATA to o TJ1e The :;o a ::;ia I !a n d fo r m I E M f)IA M ~ O \'lU N G B lb ~ Q uae G IA CAT sA f)inh V a n T ran Bue H uy T h q n h Vung bien v u o n quoc gia (VQG) Cat Ba thuQc quail dao Cat Ba, Hai Ph on g - mOt qulin dao d a voi I a n nh at & ven b o tay Bien D o n g Dia hlnh vung bien VQG het s u e phrrc tap, c da o "oi nhie u ca D !1 d~p hiern co, ha:p da:n du k hach t r ong va ng oai nu o c Day lit nrr i tr anh g io bao tot cho tau thuyen v a co he thong lubng Iac h sau dan tau bie n vao cf!~ cang Clia L1,1c, Hon Gai va Hcii Phong H~ thong am tieu san h5 vien b6" a vung bien la noi ltru gill nh ieu nguon gen sinh v~t qui hiern v a nhieu Io "i;ic san noi (ieng D~c diem dja rnao vung bien VQG rno i chi duqc d e c~p S;y luge mot s6 cong tr lnh ng hie n ctru tru o c day [2 7] Bai ,jet la Ian dau tien cong b6 chi tie t ve dia ma o vung bien VQG thunc quan d8.0 Cat Ba Tu lj~u sir dung tr ong bai Ia ket qua cua nhieu dQ'~ d ie u tra khao SeH nhung narn gan day di;ic biet Ia d o t kh ao sat lap lu~n chsrng ~inh ti5 k y thuat Trung tam Ng hien cuu bien Hai Pho ng tie D hanh narn 1989 Ngoa i t11' Iieu t htrc di a cua c a c dor k hao s a t bang x u o n g v a ta u 33 CV, s ~ dung U ti lieu phan tieh cac hili d o va Iuc d o va, ngoai nucc t5 r j~ : 1/250001/50000 anh may bay ty 1~ 1/30000 (flam 1985) va cac he; fmh.v~ tinh Landsat ty l¢ 1/100000 (cac narn 1986 1989)" Cac tir li~ugoc va die so d o dia, h lnh, dja rna o t han h lap ty l~ /25000 thi~n, dang luu fE -fr t?i trun g tam nghien ctru bien-fIcii Pho ng 19 KHAI QuAT v~ DJA HINH VUNG BIEN VQG i ngap chim hl5t Vung' bien VQG Cat Ba 18 mOt vun g dja hlnh caxta b hgfedcbaZYXWVUTSRQPON s irc phuc tap va hiern c6 tr e n th~ giai N g oai oao chinh, to an v u n g c6 137 dao nho, cao nhflt la hon Giao Oi (149m), rong nhat la da o Dau Be (3S0ha) va chi c6 k hoang 39 ho n rOng t re n Sha DO c a o cac da o t?P trung cac khoang 120 -150m 80-100m, 40-60m 20-30m MOt s6 hon chi cao 10 -15m Cac dao c6 hln h dang ky dj , ba d ao c6 nhieu rnu i nho, cung 16m va nhieu vacbbo d6c dung chan c6 ngan ~n man h6a hoc Da s6 cac dao c6 them san ho v ien quanh va tre n da o c6 ho rnro e man Hau he t dj~n tich vung bien VQG narn dir o n g dting sau 20m, nai sau nhat (35m)fedcbaZYXWVUTSRQPONMLKJIHGFEDCBA a gan h o n V~ Gia Con Vj nh Lan Ha s au trung blnh 13m DO s au 10 - 15m c hu yeu a true La ch Nga n va Iac h D au Xuoi , Die n tich cua tung, arig ch i ern kho ang 45% d ie n tich vung bien s a u trung blnh 3-4m, va n arn dtrang d ting s au 12m Cac tung ang Ian deu ch ay theo phtro rig DB - TN, dai - 8km, cua rOng 400-1200m s a u 6-10m va phb bien them san ho vien quanh tao nen cac vting nho , kin va rnra kin, v a c6 hlnh thai gi6ng am tieu vong , To an bO d o i tr ie u cua vung rOng 815 v a i dO cao thu o ng khoang HD, tr ung blnh 0,5 m/Om HD DO c a o - 4m/Om HD chi c6 it a cac ba i tich tu s6ng 0- 1m/Om r~t DJA M~O BO' BIEN VQG BO' bien mom VQG khuc k huyu, qua nh co hi chia cat bo i h~ th6ng cac dao, da nga m, rnfl i nho, am t ieu san ho, tung ang va cac ranh, h6 ng arn a day vao kieu b a caxto bi Shepard F.[ 1] c6 the x~p b c bien TSRQPONMLKJIHGFEDCBA ng ap chlrn Mot s6 ta c gia [2, 3, 6, 7J xep b o bien & day v a o k ieu an mon hoa hQc Thir c t~ dja hlnh b a a day r at ph ire t ap, Theo - C A e D ~ N G v A cxc y~ u T O DJA H IN H B O ' + Y a c h v d s u o n b o - Vach va su c n b a da vOi vQG hau h~t la d6c dung va duoc hlnh qua tr lnh t r tr o t la, sup db tr ong Iuc hoac qua tr lnh m id rn on va ho a tan rua Ifia cua mrc c bien C6 noi e~u t a o dia chat, c ac lop da vt>i d m x ie n ch e o ta o r a cac vach tr eo (d6e tr e n 90°) C6 no i cac l&p da vOi xen s i lit nghieng tho t ao nen d ja hlnh kieu d o n nghieng [cue s ta}, Tr en vach va suc n d6e thuong ba.t g~p cac ngliD bien cb, v~t cb barn cao 2-2.5m, 3-4m c6 ta i 5-6m Chan vach co the la bai tang, (:uOi, soi, darn hoac them rnai rno n va th e m san hO hoac them tlch tl) va b:ii cat bien, + N g { [ n a n m a n h a h Q c Phat tri~n chu y~u pharn vi dao dOng rnuc rnro c trleu ChUng thtrang c6 dO cao - 3.5m, lorn sau vao kh6i nui cht.Jc centimet dEn 10 -15m, va hlnh thii cua chung r~t khac biet ng~n n, ng~n kep, ng~n d6i xung ngan khOng d6i xting • phu thuOc th anh ph an, c'u t,o da g6e va di~u ki~n dOng Iuc cua bien, 20 eua va i nhtr vao + TSRQPONMLKJIHGFEDCBA Hang l u l } n fedcbaZYXWVUTSRQPONMLKJIHGFEDCBA v a zyxwvutsrqponmlkjihgfedcbaZYXWVUTSRQPONMLKJIHGFEDCBA cu-a t h t m g la nhung dang dja hinh doc da o tham gia tao nen c anh quan dep cho vuo n Chung cling duo c hlnh th an h chu y€u an rnon h6a hoc, Hang c6 the cao 5-6m, rOng 12 -15m, sau hang ch u c met (hang Xich, hang Thting ) va la to h o p cua cac ng an hi en da i va ngan co da i Cac cua thong hep thuang c6 hlnh d6i xung hai hen, hlnh dau ng o ac don v a n g an an m o n k h a s au + T h ~ m m id m o n duo c ta o nen b a i ca c qua trlnh mai m o n ctia s6ng bi en, an mon h6a hoc va xarn thirc cua dong tr ieu, T'hern phat tr ie n chu yeu a no i co s6ng ma nh nhtr khu dong nam (DN) Vuan va D~u B~ Be mat them thuo ng cao ngang muc bien trung blnh va rOng m ot vai met d€n hon chuc met Pha n tr en phia v ach doc them thtro ng 10 da goc va k phang , phan duoi thtr c n g duo c tich tu cac san pharn v un pha huy s6ng + T iw m t f c h t u v a c l~ c a t c b Ia nhtrng dang tich tu b a narn cao han mu c trieu cuo ng hie n Chung thu o ng phan bo & cac cung b a lorn v a duQ'c cau ta o chti yeu bai cac vo sinh vat, d o ca o c6 the da t 2-2,5m toi 3-3.Sm Tr e n mat them phat tr ien c a c loa i ihvc v1).t luc dia Cac de cat & DUQ'ng Gianh cao - ~m dai tlr vai tram toi hon ngan met d uo c dong doc bo va song th a nh tao nen k ho ang 2-1 ng an narn truce, Cat c6 phan chti yeu Ia tha ch anh, + C a e b a i b i~ n s6ng vun tu , e6 t ren 20 bai, chti y€u ph an bo akhu DN va Dau Be tao cac bai tam d e p nhir Cat Co, Cat Drra DO cao ' cua bai t hir o ng tlr - m /0 m HD, r o ng vai chuc den ho n tram met, dai v ch u c met d en 20Vmet.
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