Kết quả bước đầu sử dụng tài liệu ảnh vệ tinh nghiên cứu phân bố cỏ biển, rong biển và san hô ở miền trung việt nam tuyển tập tài nguyên và môi trường biển, tập 5

mUNG TAM KHOA Hoe TV NHIEN V I~ N VA eONGfedcbaZYXWVUTSRQPONMLKJ N G H ~ Quae GIA HAl DlJONG HOC TAl NGUYEN , VA " , ,,? MOl TRUONG BIEN PONMLKJIHGFEDCBA ~ U Y E N T ~ P CAC CONG TRINH NGHIEN ~ A A I \ '" Cl1U) v T ~ P vutsrqponmlkjihgfedcbaZYXWVUTSRQPONMLKJIHGFEDCBA BAN BIEN T~P:fedcbaZYXWVUTSRQPONMLKJIHGFEDCBA T ru o n g b a n : PGS, PTS Nguyen Chu IThi Thu PTS Nguyen Huy Yet ky: C a c th a n b u ie n : PTS Nguyen Van Tien PTS Nguyen Due C1.j PTS 'I'ran Due Th~nh PTS Luu Van Di~u PTS Nguyen Huu ce PTS NHAxu~TBANKHOAHocvAK~THUAT HA NOl - 1998 Do C6ng Thung va T a i n g u y e n fedcbaZYXWVUTSRQPONMLKJIHGFEDCBA M i tru irn g b ie n T a p v Ml)C Ll)CvutsrqponmlkjihgfedcbaZYXWVUTSRQPONMLKJIHG Trang Lei gi ::"~ :.> ~ :'.\: ";:':f~: :~.'I ,-,./:'.; 3 • • - 30 _ , ~ - - '.':" ~_-:~~::~ , 1.< »' :' J- ~ • : :.j., " · • ••• ' •••• ~' ' , ,I \" I " ••• · t~.· .: : J.i ~" i : ,I , , · :.;< • ~ -' 33 36" I t , " ' ~ / - " , \ ~ ~ • •' : '.' I -' _ I (: ~ ::,-. •• , _ f, ' ., i , , ', ' " ',.- -:r '" - ' - .-;-_._ -, , , , , i " " , " , ,I" : r-r- - ! - - ' : - - - : " c:t,\1 cnD r ~ " ~ ,.1 16.'/ 13 33 .• 36"· : •., ' ' J~~;.' ', I '." ,,' ', " ; ' ' .' '_ ! , " _" I' ,,~ , Bilda Doli ~ix: rOJl~ bien R~1l s a n h6 dt) phll th a p R~II S3n h6 1I(; Ilhti tr u n g blnh T ;2 ;I " " ',', , '; ', I' Oil; b;~n ' Jii'!1'riT!1T h : ,I ~ rc ['~ 13 'I 33, 36" ~ C \ l: : , J '1 '4 " H in lt '1 '0 5 " Ban dO phan (theo b6 ran san tai lieu anh o hO va rong v~ tinh bien Wio SOn Cha ADEOS.'AVNIR 0.8 i thang (Thua Thien - Hue) 4/1997) 99 T a i n g u yen va M i PONMLKJIHGFEDCBA t r u ir n g b ien T i) p v vutsrqponmlkjihgfedcbaZYXWVUTSRQPONMLKJIHGFEDCBA Cac mat cat dung lam "khoa" duoi mat day duoc khao sat bang Ian ngam Diving Scuba va quay video, chup anh duoi nude, Bang trinh bay nhirng tinh chat cua ba mat cat kho [8] Bang Di;ie di~m cac mi;it dit ran san hO S a n eba Tinh chat Vi tri Do sau ran Be rong ran Do sau phd bien san ho cung dung lam kb6a gild doan anb v~ tinb M~t cat I M~t cat II M~t cat III Phia nam dao 0- 12m 120m Phia tay dao 0- 13m 56m Phia bac dao 0- 15m 80m - 9m - 8m - 12m (% ) 100,00 100,00 Tong dO phu fedcbaZYXWVUTSRQPONMLKJIHGFEDCBA San ho s6ng 35,0 60,0 San ho chet 2,0 4,0 Rong bien 4,0 44,0 100,00 59,0 3,8 2,6 Day da Day cat - 18,0 12,0 6,0 9,0 6,4 Day bun cat 5,0 8,0 - Loai khac 2,0 anh Son Cha , - 19,2 duoc giai doan so co dien tfch 576 ha, do, dien tich dao phu rung cay 126,32 ha, dien tich vung bien 401,24 dien tich ddi bO dao (de) sau den 10 - 15 m) la 48,44 (hinh 3) Bang Di~n tlch ran san h6 va cac d6i tmrDg khac cY dOi ber dao SaD eha (tbeo till li~u phan tfch Imh v~ tinh ADEOS/AVNIR) D6i tuong Di~n tich (ha) Ty I~ (%) Ran san ho co dO phu thap 5,51 11,37 Ran san ho c6 dO phu trung binh B1iirong bien 17,05 5,43 35,20 11,21 Bai cat bien Bo da g6c 1,40 19,05 39,33 Cong 48,44 100 2,89 San ho song co d(>phu trung blnh (50 - 60%), dien tich 17,05 ha, phan bo dai rong 30 - 60 m vien gan lien tuc xung quanh dao De) sau phan bo san h6 chu yeu tu - 1,5 m den - 12 m, thuoc dClisiren doc rl;ln Day chinh la dai phan bo ran san h6 chu yeu san ho ciing doc duoc tren anh v~ tinh Phia dai san h6 la bo da goc bao gom ca phan Ie)tren can va ph an chlm duoi nuoc Phia ngoai dai san h6 cung la dCli chan ran co mat san ho sung phia nam dao, san ho song co de) phu thap (35 - 50%), 100 va T a i n g u y e n fedcbaZYXWVUTSRQPONMLKJIHGFEDC M i tru irn g b ie n T iJ p V vutsrqponml phan b6 tren mot bai, ngam co dien tich 5,5 Tai day, tu fedcbaZYXWVUTSRQPONMLKJIHGFE b e den d(>sau - 5m va each be 45 - 60m la doi hOn hop san h6 cung va rong bien a la doi san h6 cung va khoang d(>sau - 5m den 12m d(>sau 12 - 15m la san h6 sung Co the cho rang, viec tach duoc ran san ho khoi dai be da goc la mot cong doi vdi giai doan so tren may vi tinh, mac du ket qua phan tich din duoc tiep tuc dieu chinh, kiem nghiem, K E T LU!N Stt dung anh v~ tinh nghien cuu phan b6 cua co bien, rong bien va ran san h6 la cong viec mdi me a Vi~t Nam Nho stt dung anh v~ tinh da phd ADEOS/AVNIR co d(>phan giai cao, 16m, chat luong tot va bay chup dieu kien thoi tiet va thuy van thuan loi, · kel hop vdi tai lieu mat diU tot, viec xtt ly so phan loai tren may vi tinh da cho phep nhan biet duoc dien phan b6 cua co bien a dam Lang Co, vinh Da Nang, cua Dai va rong bien, ran san h6 khu vue dao Son Chao Mac du can phai tiep tuc dieu chinh va nang cao, ket qua dat duoc me trien vong kiem ke, nghien cuu dien phan b6 va d(> phu cua cac doi tucng sinh hoc quan a nude ta TAl LI~U TRAM Barrett KHAO E.e and Curtis L.F 1987 Introduction to environmental Remote sensing London: Chapman and, New York Nguyen Chu Hoi va nnk, 1992 Danh gia trang thai dia chat rnoi truong vung bien nong ven bb Dai Lanh - Hai Van Luu a Phan vien Hai ducng hoc tai Hill Phong Nguyen Chu Hoi va nnk, 1996 Nghien cuu de xu at mot so bien phap bao v~ mci truong qui hoach xay dung cang bien Chan May, tinh T'hira Thien - Hue Luu a Phan vien Hai ducng hoc tai Hai Phong Remote sensing for marine study Report of the seminar on Remote sensing Applications for Oceanography and fishery environment Analysis Beijing, China, to 11 May, 1990 Remote sensing note, 1993 Japan Association on Remote sensing, Tokyo Tran Due Thanh et all, 1998 Monitoring of tidal wetlands and its change in the coastal zone of North Vietnam A case study in Danang - Hoian Area Technical report of ESCAP/NASDA Research Programme, RA 96.001, ESCAPlBangkok Nguyen Van Tien va nnk, 1997 Nghien cuu ph an loai, phan b6 va sinh thai tv nhien co bien cac tinh phia hac Vi~t Nam Bao cao luu trti a Phan vien Hai duong hoc tai Hai Phong 101 T a i n g u y e n v il M i fedcbaZYXWVUTSRQPONMLKJIHGFEDCBA tru irn g b ie n T i) p v vutsrqponmlkjihgfedcbaZYXWVUTSRQPONMLKJIHGFEDCBA Nguy~n Huy fedcbaZYXWVUTSRQPONMLKJIHGFEDCBA Y e t va nnk, 1997 Khao sat, danh gia da dang sinh hoc va tiem nang bao ton dao Son Cha (Thira Thien - Hue) Bao cao luu tru a Phan vien HAi ducng hoc tai HAi Phong SUMMARY PREMILINARY RESULT IN USING SATELLITE DATA TO INVESTIGATE THE DISTRIBUTION OF SEAGRASS BED, SEAWEEDS AND CORAL REEF IN THE COASTAL ZONE OF VIETNAM CENTRE T n D u e T h a, n h , D in h V a n H u y N g u yen V a n T ien , N g u yen B u y Y et This report is a result from the theme coded RA 96.001.G belonging to ESCAP/NASDA Research Programme With four bands and high spatial resolution of 16m, the ADEOS/AVNIR multispectral seaweeds image taken in April, 1997 has been used for investigating the seagrass beds, and coral reef in the coastal area of Hue - Hoian, Vietnam Centre The sites of Langco Lagoon, Danang Bay and Dai Estuary have been chosen for studying seagrass beds The Soncha Island has been investigated quality of satellite and truth ground diving, the distribution identified by digital and coverage processing in seaweeds and coral reef Thanks to the good data including of seagrass From the studied underwater bed, seaweeds result, inventoring and monitoring them in the Vietnam coastal zone 102 ones surveyed by SCUBA and coral reef have been it is expected to possibility of ... phu thap 5, 51 11,37 Ran san ho c6 dO phu trung binh B1iirong bien 17, 05 5,43 35, 20 11,21 Bai cat bien Bo da g6c 1,40 19, 05 39,33 Cong 48,44 100 2,89 San ho song co d(>phu trung blnh (50 - 60%),... d(>sau - 5m va each be 45 - 60m la doi hOn hop san h6 cung va rong bien a la doi san h6 cung va khoang d(>sau - 5m den 12m d(>sau 12 - 15m la san h6 sung Co the cho rang, viec tach duoc ran san ho... nam dao 0- 12m 120m Phia tay dao 0- 13m 56 m Phia bac dao 0- 15m 80m - 9m - 8m - 12m (% ) 100,00 100,00 Tong dO phu fedcbaZYXWVUTSRQPONMLKJIHGFEDCBA San ho s6ng 35, 0 60,0 San ho chet 2,0 4,0 Rong