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Cac cong trinh iighiin ciru Dia chdl \a Dja \ at ly bien Tap XI ^ ^ J S S N J 8 2 ^ ^ 0 7 0 UNG DUNG CONG NGHE VIEN THAM & GIS NGHIEN CUU ANH HUONG CUA M Q T S 6 H0 4T D Q N G KINH TE XA HOI DEN MOI T[.]
Cac cong trinh iighiin ciru Dia chdl \a Dja \-at ly bien Tap XI ^^JSSNJ82^^070_ UNG DUNG CONG NGHE VIEN THAM & GIS NGHIEN CUU ANH HUONG CUA MQT S6 H0.4T D Q N G KINH TE - XA HOI DEN MOI TRUONG DAT CAC HUYEN \ EN BIEN KHU M J C HAI PHONG Trinh Hodi Thu, Nguyin Tu Ddn Trdn Anh Tudn, Le Qudc Hung, Pham Viet Hdng TOM TAT Khu vice ddi ven bien Hai Phdng Id mot ba cur tam gidc tdng truang kinh te phia Bdc (Hd Noi - Hai Phdng - Qudng Ninh) I 'di mot tiem ndng to lim cho phdt trien nhiiu logi hinh kinh ti nine: du lich, niidi Irong thiiy san Nen kinh te Hai Phdng duxyc phiit trien, kit qua Id dd tdc ddng den mdi truang cldl ciia khu vice J^di muc tieu nghien cicu dnh hicang cua mot sd hogt ddng kinh le - xd hoi den mdi tncdng ddt cdc huyen ven bien khu vuc Hai Phdng, nlneng cdng viec sau day cfd chcac trien khai: - Xdy dung ca so die lieu tie nhieng die lieu dd cd: - Ddnh gid dieu kien hien trgng mdi trudng: - Su dung cdng nghe he thdng tin dia ly de ddnh gid tdc ddng cua mot sd hogt ddng kinh te - xd hdi cu the nhu: hogt dong ndng - Idm - ngie nghiep: ddn cu vd lao ddng gdy dnh huang den mdi tncdng ddt Cdc lap thdng tin dd duac Igo bdng cdch sic dung cdc phdn mem xic ly dnh vien thdm vd he thong thdng tin dia ly nine: ENVl, ARC/INFO, ARCVIEW, Mapinfor I MO DAU Ddt Id mot he sinh thdi hodn chinh nen thudng bj nhiem bdi cdc boat ddng ciia ngudi O nhiem ddt cd thg phdn loai Iheo ngudn gdc phdt sinh Ihdnh d nhigm chat thdi cdng nghiep, chdt thdi sinh boat, chdt thai cua cdc boat ddng ndng nghiep, d nhigm nude vd khdng lu cdc khu ddn cu tap tmng Chdt d nhigm dgn vdi ddt qua nhigu ddu vdo, nhung ddu thi rdt it vi nhieu chdt d nhigm sau thdm vdo ddt se dugc luu lai ddt Hien tugng ndy khdc xa vdi hien tugng d nhigm nude song, chi cdn chdt nhigm ngirng xdm nhap thi khd nang ty van ddng cua khdng \'d nude se nhanh chdng tdng khu chat d nhigm khdi chiing Dat khdng cd kha nang ndy, neu thdnh phan chat d nh'" ]ua nhieu, ngudi mudn khu d nhigm cho dat se gap rat nhigu kho khan \d tdn nhieu cong sire Ddn sd trgn trdi ddt tang len, doi hoi lugng luang thuc thuc phdm ngdy cdng nhigu vd ngudi phdi dp dicing nhCrng phuong phdp de tang mire sdn xudt vd cudng khai thdc phi ciia ddi Nhung bien phdp bien nhu Id: lang cudng su dung cdc chdl hod hoc ndng, Idm nghiep nhu phdn bdn, thude tru sdu, thuoc diet cd; sir dyng cdc chdt tdng cudng sinh trudng dg cd Igi cho viec Ihu hoach Tdt cd cdc bien 110 I ojy - j u / u Cae cong trinh nghign ciru Dia chat va Dja vat ly bign Tap XI phdp dgu tdc ddng manh dgn be sinh thdi vd mdi trudng ddt: Ldm ddo ldn cdn bang sinh thdi su diing thuoc trir sdu; ldm xdi mdn vd thodi hod ddt; Idm man hod hay chua phen chg tirdi tigu khdng hgp ly Bdi bdo tap trung ddnh gid tdc dong cua mdi sd boat ddng kinh tg - xa hoi cu thg nhu: hoai ddng ndng - Idm - ngu nghiep; dan cu vd lao ddng gdy anh huang den mdi trudng ddi tu dd cd bien phdp quan ly, bdo vc vd su dung bgn vung mdi trudng ddt II CO SO TAI LIEU VA PHUONG PHAP NGHIEN ClTU ILL Co-sd tai lieu Khu vyc nghign cuu Id viing ven bign khu xyc Hdi Phdng nam d viing Ddng bdc dong bang Bae Bd (gdm huyen ven bign: Tign Lang, Kign Thuy, Hdi An, Dd Son) vdi gidi ban tga dia ly la: cp: 20°35'00" - 20°55'00" vT Bdc X: 106°35'00"- 106°50'00" kinh Ddng Can cir vdo pham vi khong gian, noi dung vd muc dich nghien cim chung tdi dd Ihu thdp cac sd lieu cd lign quan bao gdm: - Cdc thdng tin vg cdc du dn phdt trign, cdc bdi bdo nghien cuu, cdc bdo cdo lign quan - Cdc dir lieu vg digu kien lu nhign vd kinh tg - xa hdi nhu sd lieu vg dja hinh, song sudi, dudng giao thdng, ranh gidi hdnh chinh Ddc biet cdc so lieu vg tinh hinh phdi trign ndng - lam - ngir nghiep vd ddn so ciia khu vyc theo nien gidm thdng kg cua Cue thdng kg Hdi Phdng - Anh ve tinh Landsat vd sd lieu chung ve phdn bd sir dung ddt - Cdc dir lieu vg dja hinh, sdng sudi, dudng giao thdng vd ranh gidi hdnh chinh, cdc boat ddng ndng - ldm - ngu nghiep, ddn sd dugc thu thdp dudi dang vector Dii lieu vg phdn bd su dung ddt dugc thu thdp tir cac nghign ciru d giai doan Ini'dc vd cimg vai cdc thong tin thu dugc tir gidi dodn dnh ve tinh II.2 Phuong phap nghien ciiu II 2.1 Phuong phdp vien thdm Cdng nghe vign thdm dang ngdy cdng dugc dp dyng rong rdi cong tdc bdo ve mdi tmdng Vdi bao qudt rdng, cd nhigu thdng tin vd khd nang cung cap thong tin nhanh, cd chdt lugng vd tin cay cao, vign thdm da trd thdnh mot cong cu quan trgng trg giup cdc qud trinh hoach djnh chign luge vd kg hoach, chinh sdeh bdo ve mdi tmdng cho cdc qudc gia ciing nhu cdc viing lanh thd Cho dgn thdi digm hien nay, dnh ve tinh cd nhigu loai vd da co nhigu thg he Song dugc sir di,ing phd bign hon cd vdn Id cac anh ve tinh tdi nguygn chup d ddi phd nhin thdy vd can hdng ngoai nhu: he thdng dnh Landsat cua My, dnh SPOT cua Phdp, dnh KFA - 1000, MK - vd KATE - 200 ciia Nga Cdc loai dnh co thg dugc diing III Cac cong trinh nghign ciru Dja chdt va Dja \-d[ ly biin Tap XI 1SSN_|859^3070 cac ITnh vuc ve digu tra tdi nguyen, gidm sdt mdi trudng, dac biet dugc sir dung dg thdnh lap cdc bdn vg hien trang (hien trang sii' di,ing ddt, hien trang rung, hien trang ldp phu, hien trang mdi trudng, bdn dd dja hinh ) vd cdc bdn dd bign dgng (bien dong dien tich rung, bign ddng bd sdng - bd bign, bign ddng ldp phu ) Cd thg noi rang, dnh ve tinh la tu lieu tdt dg nghign cim cac ddi tugng trgn bg mat ddt Hien da cd nhung loai dull cd phdn gidi mat dat khdc nhau, cho phep xdc djnh nhigu ddi tugng vd hien tugng d nhirng muc chi tigt ciing khdc Anh dugc chup vdi dien rdng va d tdm cao ngn cd thg ghi nhdn dugc nhigu ddi tugng, hien tugng mot pham vi ldn d cirng mot thdi digm vd cd khd nang ty tdng hgp hod ty nhign Dg xdc djnh pham vi phdn bd cdc loai hinh sir dung ddt, cd thg coi dnh ve tinh la tu lieu vd cdng cu hiiu hieu Ngodi nhiing ung dung ngu trgn, dnh ve tinh cdn dugc su dyng dg khdo sdt, nghien ciru nhirng khia canh khdc lign quan dgn sir dyng hgp ly tdi nguygn vd bdo ve mdi tm'dng Trong bdi bdo nay, dya trgn cdc tu lieu dja hinh, dnh ve tinh vd cdc tu ligu khdc, chung tdi da lap bdn dd hoat ddng ndng - Idm - ngu nghiep cua khu vuc II.2.2 Phuong phdp ddnh gid tdc dgng bdng cong nghe GIS Ciing vdi edc thdnh tyu tin hgc hien dai Id sy phdt trign manh me cua cdng nghe GIS GIS dugc coi Id mot cdng cy ky thuat rdt manh vi nd cho phep nha dja ly td hgp dir lieu vd nhirng phuang phdp hd trg dang phdn tich dja ly tmygn thdng nhu phdn tich chong ghep ban dd cdng nhu dang mdi ciia phdn tich vd md hinh hod khdng gian vugt qud khd ndng cua phuang phdp tmygn thdng Phdn tich khdng gian Id dua Idi gidi cho cdc cau hdi vg khdng gian va cdc vdn dg khdng gian Dg ldm dugc digu nay, mot he thdng cdc chuc nang dugc thdnh lap vd sy td hgp cua chung that su can thigt dg gidi quygt cdc vdn dg thg gidi thyc Trong nghign cim nay, chung tdi sir dyng chuc nang chong ghep thdng tin Ddy Id mot thao tdc khdng gian dd nhirng ldp thdng tin chuygn dg dugc chdng len dg tao mot Idp thdng tin chuygn dg mdi chira dung nhirng thdng tin nidi De cd dugc nhii'ng ldp thdng tin ndy cdc thao tdc sd hgc hoac thao tdc logic dugc van dung trgn nhiing ldp dir lieu khdc da dugc nhap III DANH GIA TAG DONG DEN MOI TRUTONG DAT CUA MOT SO HOAT DONG KINH TE - XA H Q I n i l Thanh lap cac ban phan III 1.1 Bdn mat ddn so Bdn dd mat dan sd dugc xdy dirng dya trgn sd lieu thdng kg cdp xa theo nign gidm thdng kg ciia Cue thdng ke thdnh phd Hdi Phdng nam 2003 Can cu vdo mat da tinh todn chung tdi thdnh lap bdn theo phuang phdp bigu thj ngn dd gidi vdi cdc mire mat ddn sd nhu sau: 20 - 400 ngudi/km^; 400 - 700 ngudi/km^; 700 - 800 ngudi/km^; 800 - 1000 ngudi/km^; 1000 - 1150 ngudi/km^; 1150 - 1250 ngudi/km^; 1250 - 1400 ngudi/km-; 1400 - 1500 ngudi/km^; 1500 - 2500 ngudi/km^; 2500 - 3200 ngu'di/km^ Tl2~ ISSN 1859-3070 £g£^6ng trinh nghien ciru Dja chdt va Dja vat ly bign Tap XI /// / Bdn hoat dong nong - ldm - ngir nghiep Dya trgn cdc tu lieu dja hinh, dnh ve tinh vd cdc tu lieu klidc, ddc biet sd lieu cua bdo cdo tdng kgt: ''Xdy dung bdn nhay cam cua cdc he sinh thdi vai tdc ddng mdi truirng khu vice thdnh phd Hai Phdng'" [5] Chiing tdi da thdnh lap ban dd boat dgng ndng - ldm - ngu nghiep cua khu vuc nghign ciru dya trgn phuong phdp bieu thi ngn chat lugng vdi cdc khu vuc boat ddng nhu sau: - Ndng nghiep gdm: ddt v!.i lua, ddt vi^i lua + vii mdu, - Ldm nghiep: cdc khu vyc rirng ngap man ngodi ddm nudi, ddm nudi, - Ngu nghiep: Khu nudi trdng thuy hai sdn (mat nude ddm nudi) - Cdc khu vyc khdc gdm: kliu dan cu ndng thdn, khu ddn cu thj, khu san ldp xay dung; bai trigu cd cd nude, bdi trigu khdng cd rung ngap man, cdy bui, •rsm ^^•»Kg vr ika^ p^^ Ha MKIKJ nam XJOS Hmh Ban dd boat ddng ndng - ldm - ngu nghiep (thu nho tir ty le 1: 100 000) Hinh Bdn dd mdt dd dan sd III Qua trinh danh gia va ket qua /// Tdc dong ciia mat dp ddn so den nidi trudng ddt Dg ddnh gid tdc ddng cua mat ddn sd dgn mdi trudng ddt, bdi bdo ndy chung tdi tinh todn mat ddn sd theo don vj ngudi/km' Dg thdng nhdt qud trinh ddnh gid cdc gia trj mat ddn sd dugc dinh lugng hda theo mot thang digm vdi cac mire nhu bdng sau: 113 ISSN 1859-3C-0 Cac cong trinh nghien ciru Dja chdt \a Dja vat ly b i £ i r _ J j £ ^ Bdng 1: Bdng ddnh gid thdnh phdn mat ddn sd Mat dan so (ngu6i/km^) Diem danh gia Diem danh gia chuan hda theo Vo 2500 Muc tac dong den moi truong dat Tdc done rdt nhe Tdc ddng nhe Tdc ddng trung binh Tdc ddng manh Tdc ddng rdt manh Hinli Bdn dd muc tdc ddng cua mat ddn sd den mdi tmdng ddt (thu nhd tir t y l e l : 100.000) Jhiifh l^fiihfc io lieu nier giam ihiinyke cua Cue thonp ie Hdi /'fiori^ nam 200 /// 2 Tdc dong ciia hogt ddng ndng - lam - ngir nghiep den moi tnrdng ddt Khu vyc ven bign Hdi Phdng thude ddng bdng chdu thd sdng Hdng, mdt hai ddng bang chdu thd ldn nhdt cd nude, vi vay boat ddng kinh tg chu ygu ciia khu vuc ndy Id ndng - lam - ngu nghiep Trong dd boat ddng ndng vd ngu nghiep Id chu dao, cdn lam nghiep chi cd d cdc khu vyc ngap nude ven bign nhung lai cd y nghTa hgt sue quan trgng ddi vdi cd vimg Dg ddnh gid tdc ddng ciia cdc boat dgng ndy chiing tdi cung su dung mdt thang digm ddnh gid nhu ddnh gid tdc ddng cua mat ddn sd Cdc ddi tugng cd mire tdc ddng dgn mdi trudng ddt nhu bode gdn nhu dugc xgp vdo iiidt nhdm vdi mire digm ddnh gid gidng Do cdc ddi tugng dugc thg hien bdn boat ddng ndng - ldm - ngu nghiep, chi mang tinh chdt djnh tinh ngn viec danh gid chung tdi dya vdo mdt sd tigu chi nhu: Muc tham gia cua ngudi trgn cac hoat ddng dd theo cdc mire (nhieu trung binh, it); Tinh chdt dnh huang cua tirng boat ddng den mdi 114 ISSN 1859-3070 £gg_c6ng trinh nghien ciru Dja chat va Dja vat ly bign Tap XI trudng ddt theo cdc mire (manh, trung binh, yen); Mire d rdiigm mdi trudng ddt cac boat ddng ndy mang lai Tdng hgp cdc tigu chi cho tirng boat ddng chung tdi dua thang digm ddnh gid ddi vdi cdc boat ddng nhu bdng sau: Bang 2: Bdng ddnh gid thdnh phdn boat ddng ndng - ldm - ngu nghiep Diem Diem danh gia danh chuan hda theo % gia Sdng, hd, bign; Bai trigu, cay bui Rudng lua; Rudng liia + mdu; 12 Kliu ddn cu ndng thdn; rung ngap man 20 28 Khu ddn cu dd thj; Khu san Idp xdy dyng; mat nude 36 ddm nudi Cac hoat dong nong - lam - ngu nghiep Muc tac ddng den moi trudng dat Tdc Tdc Tdc Tdc dong dong dong ddng rat nhe nhe TB manh Tac ddng rat manh Hiiili Bdn dd mire tdc ddng ciia boat ddng ndng - ldm - ngu nghiepm dgn mdi hirdng ddt (thu nhd hr t y l e l : 100.000) /// Tdc dong tdng hop ciia mat dp ddn so vd hogt dong ndng - ldm - ngir nghiep den moi trudng ddt Sau da cd bdn dd ddnh gia tac ddng rieng re eua hai chi tigu trgn ddi vdi mdi tm'dng dat, chimg tdi tign hdnh chong ghep hai ldp thdng tin ndy theo phuang phdp chdng ghep so hgc Digm ddnh gid tdng hgp dugc tinh bang tdng ciia hai digm so cua hai chi tigu trgn Theo phuong phdp thi digm sd ddnh gid tdng hop cua hai chi tieu ndy se bign thign tu dgn 72 Vd chudi chi sd ndy se dugc phdn tich theo phuang phdp ngdt hr nhien (natural break) de chia thdnh cdp dnh hudng dgn mdi truong ddt tir tdc 115 ISSN 1859 -3('":! Ciic cong trinh nghign ciru Dia chdt \a Dja vat ly bien^^IjP^iL ddng rat nhe dgn tdc ddng rdt manh vdi cdc muc digm ddnh gid tuong irng nhu sau: < 24: Rdt nhe: 24 - 36: nhe; 36 - 44: tmng binh; 44 - 56: manh; >56: rat manh Sau chdng ghep vd phdn chia theo cdc mire trgn, bdn dd muc tdc ddng tdng hgp mat ddn sd xa cdc boat ddng ndng - ldm - ngu nghiep dgn mdi trudng dat dugc thdnh lap vd bigu dign trgn hinh Trgn hinh cd thg thay rang mire tdc ddng dgn mdi tmdng ddt cua mat ddn sd vd cdc boat ddng ndng - ldm - ngu nghiep la khdng ddng dgu Tdc ddng manh, ygu chi tap trung d mdt sd kliu vyc vdi cdc digu kien boat dgng ndng - ldm - ngu nghiep cd tinh ddc thu Hinh Bdn mire tdc ddng tong hgp mat ddn sd vd cdc boat ddng ndng - ldm - ngu" nghiep dgn mdi trudng dat (thu nhd tir ty le 1: 100 000) Dien tich (km2| Dien tich (I(m2) 15C Muc d o tac d o n g 116 Hinh Bigu dd bieu thj mire tdc ddng cua mat ddn sd vd cdc boat ddngndng ldm - ngu nghiep len nidi trudng ddt kliu vyc ngliign cim ISSN 859 - 3070 Cac cong trinh nghign eitu Dja chat va Dja vat ly bien Tap XI Mire tdc ddng cua mat ddn sd vd cdc boat ddng ndng - lam - ngu nghiep Ign mdi trudng ddt khu vyc nghign cim cung dugc bigu dign tren bigu dd (hinh 6) Hinh cho ta mdt cdi nhin true quan ban ve dien tich bi tdc ddng d cdc mire khdc so vdi dien tich tdng thg cua khu vyc nghign ciru Tir dd cd thg dua dugc mdi so nhdn djnh, nhirng ddnh gid tdng quan nhdt vg mdi trudng ddt khu vyc Dien tich khu vyc nghign cim Id 289 83535 km\ Vimg bj tdc dong rat nhe chigm mdt dien tich la 43 0646 km^, dien tich viing bj tdc ddng nhe Id 146 399 km", tmng binh Id 51 7856 km vd dien tich vimg bj tdc ddng manh Id 42 3321km', cudi ciing Id viing bj tdc ddng rat manh cd dien tich Id 25405 km^ Ban dd trgn hinh cho ta thay mire tdc dgng manh nhdt dgn mdi tmdng ddt tap tmng d huyen Dd San vd Hdi An Nhirng khu vyc mac dir mcdt ddn so khdng ldn nhung cdc boat dgng ndng - ldm - ngu nghiep vd cdc boat dong klidc ciia ngudi d day gay dnh hudng rdt ldn dgn mdi tmdng dat khu vyc Vi vay can khuygn cdo, ddi vdi cdc khu vyc ndy ngodi viec phdt trign kinh tg xa hoi cdn phdi cd bien phdp dg bdo ve mdi tmdng ddt Nhirng khu vyc cd mire tdc dgng nhe thudng Id nhiing khu vyc cd rirng ngap man, tap tmng chii ygu d mdt sd xd thuoc huyen Kign Thyy vd Tien Lang IV KET LUAN Tir cac kgt qud nghign ciru chiing tdi dua mdt sd nhdn xet vd kgt ludn nhu sau: - Phuang phap ddnh gid tdc ddng bang cdng nghe GIS vdi chirc nang chong ghep thdng tin da gidi quygt tdt viec nghign ciru dnh hudng cua mdt sd boat ddng kinh te - xa hdi dgn mdi tmdng ddt cdc huyen ven bien khu vuc Hdi Phong, bao gdm cdc huyen: Tign Lang, Kign Thyy, Hdi An, Dd Son - Kgt qud nghign cun da xay dung dugc cdc bdn ddnh gid tdc ddng cua mat ddn sd dgn mdi tm'dng ddt, danh gia tdc ddng ciia boat dong ndng - ldm - ngu nghiep dgn mdi tmdng ddt; vd danh gid tdc dgng tdng hgp cua cdc ygu to trgn ddi vdi mdi tmdng ddt Mat dan sd va cdc boat dgng lign quan la mdt nhirng boat dong kinh tg - xa hdi gay anh hudng rat ldn dgn mdi tmdng ddt Mire dnh hudng cang Idn mat dan sd tap tmng cang cao vd ngugc lai - Vdi thyc trang sir dung tdi nguygn ddt va cdc tdc ddng dgn mdi tmdng dat cua cac huyen ven bien Hai Phdng nhu trgn, viec phan tich, ddnh gid, dy bao xu hudng phdt trign kinh tg vdi mdi trudng, vdi muc tigu phdt trign bgn virng dang la van dg dugc moi cap, ngdnh quan tam ~ — 117 Cac cong trinh nghien ciru Dia chat \a Dja \at Iv biin Tap XI ISSN 859 - 3070 TAI LIEU THAM KHAO Chign luge bdo \e moi trudng Hdi Phong 2010 - 2010, 2000 Sd Khoa h()c Cdng nghe vd Moi tneirng Hdi Phdng Cue thdng kg, 2001 Nign gidm thdng kg nam 2003 ciia cdc huyen Tien Lang, Kign Thuy, Hdi An, Do Son Lg Thong (chu bign), 2002 Dja ly cdc tinh vd thdnh phd Vict Nam, Tap Cdc tinh vimg ddng bdng sdng Hdng NXB Gido due, Hd Ndi Mia Lammens, William De Genst, 1999 Phcdn tich td hgp dd lieu khdng gian vd thuoc tinh Cng dung vien thdm vd CIS Irong quy hocich mdi tneirng, tr 211 - 238 Nguygn Nggc Thach, 2006 Xay dyng bdn dd nhay cdiii cua cdc he sinh thai vdi tdc ddng moi tmdng nhdm su dung hgp ly ednh quan sinh thai cho muc tigu phdt trien ben viing kliu MJ'C \'en bien thdnh phd Hdi Phdng Dgi hoc Qudc gia Hd Not Sd bvhoa hoc cdng nghe va moi tmdng Hdi Phdng tinh, 2003 Bao cdo hien trang moi tmdng Hdi Phdng ndm 2003 SUMMARY Application of remote sensing and GIS to study influence of some socioeconomic activities effects on lands environment of coastal zone in Hai Phong area By Trinh Hoai Thu Nguyen Tu Dan Tran Anh Tuan Le Quoc Hung Pham Viet Hong The coastal zone of Hai Phong area is one of three poles of economic development triangular on the Northern (Hanoi - Hai Phong - Quang Ninh) Having a great potential in development of different human activities (tourism, aqiiacullure, ), economics of Hai Phong is developed Consequently, the environment is expected to be affected For the purpose of study Ihe infiuence of some socioeconomic activities affects mainly on lands environment of coastal zone in Hai Phong area The following activities were executed: - Establishment of a data basej'rom existing data: - Assessement of the existing environment conditions: - Impact assessement of some socioeconomic activities (Agricultural, silvicultural and piscicultural activities: population and labor) ajjecting mainly on lands environment bv using GIS techniques The layers information was created by using ENVI, ARC/INFO, ARCVIEW, Mapinfow softivare Ngudi sua bdi: TS Do Huy Cudng Vien Dja chdt vd Dia vat ly bign, Vien KH&CN Viet Nam 118 ... nghiep: cdc khu vyc rirng ngap man ngodi ddm nudi, ddm nudi, - Ngu nghiep: Khu nudi trdng thuy hai sdn (mat nude ddm nudi) - Cdc khu vyc khdc gdm: kliu dan cu ndng thdn, khu ddn cu thj, khu san... Idm - ngu nghiep cua khu vuc II.2.2 Phuong phdp ddnh gid tdc dgng bdng cong nghe GIS Ciing vdi edc thdnh tyu tin hgc hien dai Id sy phdt trign manh me cua cdng nghe GIS GIS dugc coi Id mot cdng... PHUONG PHAP NGHIEN ClTU ILL Co-sd tai lieu Khu vyc nghign cuu Id viing ven bign khu xyc Hdi Phdng nam d viing Ddng bdc dong bang Bae Bd (gdm huyen ven bign: Tign Lang, Kign Thuy, Hdi An, Dd Son)