Tiiu ban: Khoa hgc cong nghe Bien ISBN: 978-604-913-015-1<br />
<br />
<br />
iTNG DUNG CONG NGHE GIS VA VIEN THAM TRONG XAY DlTNG<br />
BAN DO VUNG PHAN BO RONG BIEN 6 DAO LY SON, TINH QUANG<br />
NGAI<br />
APPLICATION OF GIS AND REMOTE SENSING TECHNIQUES FOR<br />
MAPPING THE DISTRIBUTION AREA OF SEAWEED IN LY SON<br />
ISLAND, QUANG NGAI PROVINCE<br />
Vo Xuan Mai, Hoang Cong Tin, Le Nhu- Hau, Biii Minh Ly,<br />
Tran Quang Thai, Vo Thanh Trung, Ngo Thanh Triic, Vu Thj Mff<br />
Vien Nghien cim va Lfng dung Cdng nghe Nha Trang. 02 Hiing Vuong, Nha Trang, Khanh<br />
Hda<br />
Trudng Dai Hoc Khoa Hoc Hue. 77 Nguyen Hue, Thanh phd Hue<br />
Email: voxiianmai&.nitra.ac.vn<br />
Tom tat:<br />
Cdng nghi GIS (Geograhic Information System) vd vien thdm (remote sensing)<br />
da tra thdnh ky thuat dugc irng dung rdng rdi trong nhieu linh vuc kinh ti xa hdi<br />
ciing nhu la nhirng cdng cu uu viit trong qudn ly tdi nguyen mdi truang biin tren<br />
the giai. Vi the, cdng nghe GIS vd vien thdm da dugc ung dung trong dieu tra<br />
ddnh gid ngudn lgi rong biin a ddo Ly San (Cu Lao Re) - xd An Hai vd An VTnh -<br />
nhdm xdy dung qui trinh thu thdp dir lieu, md hinh hda vd hiin thi da lieu khdng<br />
gian. Bdo cdo cung cdp nhiing ddn lieu buac ddu vi hiin trgng dia hinh ddy ven<br />
ba, viing phdn bd thdm thue vdt, viing phdn bd rong biin vd thdnh phdn lodi rong<br />
bien. Trong dd, ngdnh rong Dd 32 lodi, ngdnh rong Ndu 13 lodi, ngdnh rong Luc<br />
12 lodi (trong khudn khd chuyen dieu tra khdo sdt thdng IV ndm 2010 thudc di tdi<br />
"Nghien cuu hiin trgng phdn bd vd gidi phdp bdo vi ngudn lgi rong Dd").<br />
Kit qud irng dung cdng nghe GIS vd vien thdm trong xdy dung bdn do viing<br />
phdn bd cua bdo cdo ndy se gdp phdn phuc vu cdng tdc quan ly xdy dung hogch<br />
dinh bdo vi vd phdt trien bin virng ngudn lgi rong bien ven bien ddo Ly San, ciing<br />
nhu dinh hudng chung cdc vdn de trong quy hogch bdo tdn khai thdc ngudn lgi<br />
kinh te biin.<br />
Abstract:<br />
Geographic Information System (GIS) and remote sensing techniques have<br />
been extensively applied for social economic fields as well as one of the useful<br />
methods to manage resources of marine environment in the world. Hence, GIS<br />
and remote sensing have applied to survey and evaluation of the seaweed<br />
resources in Ly Son Island (Cu Lao Re) An Vinh and An Hai commune to set the<br />
process of data collecting, modeling and displaying spatial data. The report<br />
presents the initial scientific results on the status of coastal bottom topography,<br />
the distribution of marine plant, the distribution of seaweeds and seaweed species<br />
as 32 species of Rhodophyta phylum, 13 species of Phaeophyta phylum, 12<br />
species of Chlorophyta phylum (In the project "Research on status of distribution<br />
and the solution of the red algae resource protection" the subject of the survey<br />
and evaluation in April 2010).<br />
The results in application of remote sensing and GIS techniques in this report<br />
would contribute to management, orientaion action plan to protect and<br />
sustainable ultilize of coastal seaweed resources in Ly Son island as well as<br />
248<br />
Hgi nghi Khoa hgc ky niem 35 ndm Vien Khoa hgc vd Cong nghe Viet Nam - Hd Ngi 10/2010<br />
<br />
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general orientation for issues in the conservation plan of the economic<br />
exploitation from marine resources.<br />
1. Mddau<br />
Huyen dao Ly Son each bd tir cang Sa Ky - Binh Chau den cang huyen dao khoang<br />
29km thudc tinh Quang Ngai, dugc thanh lap cap huyen tir nam 1992. Dien tich ciia huyen<br />
khoang 9,97 km^, gdm dao Ldn (Ly Son, cii lao Re) va dao Be (cii lao Bd Bai) d phia Bac dao<br />
Ldn. Dieu kien tu nhien thuan lgi, cau tnic dja hinh ven bien dao dugc bao boc dan xen nliiing<br />
quan xa san hd, rong bien va ed bien quanh dao. Nhu cac bai trieu ddc thoai cd nod keo dai tir<br />
1 - 2 km tao ra mot he sinh thai viing trieu ven dao rat da dang va phong phii [2]. Do dd, khu<br />
vuc nay da dugc cac nha khoa hoc quan tam nghien cim d nhieu ITnh vuc khac nhau nhu:<br />
khao cd, dja hinh do sau [7], ngudn lgi thirc vat bien, khai thac ngudn lgi che bien va djnh<br />
hudng xay dung mot trong 16 khu bao tdn bien Viet nam [1].<br />
Ben canh dd,<br />
viec nghien ciiu dac diem ikn OO DIA HiNH HUrEN oAo Lf SON T I N H OUANG NGil<br />
<br />
<br />
<br />
phan bd thanh phan loai<br />
rong bien, cd bien d<br />
huyen dao Ly Son ciing<br />
da dugc tien hanh bdi<br />
nhieu tac gia trudc day VONO NGHIEN ciiu<br />
<br />
<br />
<br />
nhu Chu The Cudng & SS>-'^'-*'**a^.*« "•«•:'«<<br />
• IWWI' 10»-»TF i»*'»*r.<br />
<br />
<br />
<br />
<br />
Hinh 2. Bdn dd phdn lap vimg hgp phdn day Hinh 3. Bdn do kit qud phdn bd cdc thdnh<br />
tir cdc band phd cua dnh vien thdm phdn nin day<br />
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251<br />
Tiiu ban: Khoa hgc cong nghe Bien ISBN: 978-604-913-015-1<br />
<br />
<br />
3.3.2. Hien trgng vimg phdn bd thdm rong bien phdn tich tir dnh viin thdm<br />
Tir cac nguIn tu lieu vdi cac the loai anh Landsat, anh Google Earth toan sac, ban dd<br />
giiy va sl lieu khao sat tir cac diem, tuyen tram, viing dieu tra hien trang va diem kiem chimg.<br />
Cdng nghe vien tham va GIS da dugc ung dung theo cac qui trinh phan tich va giai doan anh.<br />
Tren co sd dilm chia khda tach cac td hgp band phd bing phep phan lap Maximum<br />
Likelihook (Edmun et ai 2000 [3], Nyoman et ai 2003 [4], Tdng Phude Hoang Son 2004 [8]).<br />
Kit qua budc diu cho thiy viing phan bd cac tham rong biin (theo thdi diem anh) tren nen<br />
hgp phin day quanh dao Ly Son (Hinh 4 (1, 2, 3, 4) va hinh 5) cd dien tich khoang 289,3ha.<br />
Trong dd, vimg phia Bic cd dien tich khoang 81,67ha, viing phia Ddng cd dien tich 78,83ha;<br />
viing phia Nam cd dien tich 52,52ha; va viing phia Tay cd dien tich 76,33ha. Tren co sd cac<br />
dur lieu dien tich tham rong dugc giai doan ket hgp vdi dir lieu khao sat thirc dja ta cd the danh<br />
gia hien trang san lugng ngudn lgi rong d dao Ly Son.<br />
: rr. TT-<br />
• ' -<br />
<br />
<br />
^<br />
,ii A/IHAi .:BlnliW(ihi ',, -'<br />
<br />
<br />
i^*r^^^^'"^^^ ' ^<br />
* n<br />
-'v,.<br />
^ ' ' ^ ^ Vilng ph4n bS thim long bitfrt<br />
<br />
<br />
<br />
<br />
Hinh 4. Kit qud dnh gidi dodn phdn lap theo Hinh 5. Kit qud bdn do phdn bd thdm rong<br />
cdc band phd (A.I dark substract, A. 2,3,4 dnh biin phdn lap tir ngudn dnh viin thdm<br />
td hgp mdu RGB)<br />
4. Ket luan<br />
Dudi sir hd trg ciia cdng nghe vien tham va GIS, cae ban dd chuyen de viing phan bd<br />
hgp phan day da dugc xay dimg vdi dien tich khu vuc khoang 880,7ha.Trong dd, tham rong<br />
chilm 32,84% (289,3ha), rong xen lan trong cd chilm 18,87% (161,2ha), cd 21,45%<br />
(188,9ha). Vdi ket qua ban dau danh gia tai thdi diem dieu tra cho thay san lugng ciia nhdm<br />
rong Dd kinh te dat dugc khoang 4,48 tan.<br />
<br />
<br />
TAI LIEU THAM KHAO<br />
1. Chu The Cudng, Nguyen Van Tiln, Nguyen Huy Vlt. Hien trang cd biin dao Ly Son<br />
- Quang Ngai, 2005. Hdi thao qude gia Da dang Sinh hgc Viet Nam: 20-24. Nghien<br />
cim, Giang day, Dao tao: 6, download website https://tailieu.vn/xem-tai-lieii/<br />
2. Nguyen Hiiu Dai va Pham Hiiu Tri, 2001. Ngudn lgi rong biin dao Ly San. Tuyin tap<br />
Nghien cim Biin. Tap 11: 121-134. Nxb. Khoa hoc Ky thuat. Tp. Ho Chi Minh.<br />
3. Edmund P. G., Peter J. M., Alandair J. E. and Christopher D. C , 2000, Remote<br />
Sensing Handbook for Tropical Coastal Management. UNESCO.<br />
4. Nyoman Radiarta, Nitin Kumar Tripathi And Frederic Borne (STAR), K.R. Jensen<br />
(ITCZMP) - AIT, 2003. Coral Reef Habitat Mapping: A Case Study in Mensanak<br />
Island- Senayang Lingga, Riau Province, Indonesia. Map Asia 2002, August 7.<br />
5. Le Nhu Hau, 2006, Dae dilm sinh hoc va ngudn lgi chi rong Cau {Gracilar Greville)<br />
d Viet Nam: 150 (Luan van Tiln ST, Vien Hai Duong Hgc Nha Trang)<br />
6. Le Nhu Hau, Ting Phude Hoang Son, Vd Xuan Mai, 2009, LTng dung tu lieu vien<br />
tham khao sat phan bl cua tham rong Mo ven bien tinh Khanh Hda. Tuyin tap Hdi<br />
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Hgi nghi Khoa hgc ky' niem 35 ndm Vien Khoa hgc vd Cong nghe Viet Nam - Hd Ngi 10/2010<br />
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<br />
<br />
Nghj Khoa Hoc Toan Qude ve Sinh hoc Bien va Phat trien Ben vung. Nxb. Khoa hoc<br />
Tu nhien va Cdng nghe: 574-580.<br />
7. Le Nhu Nga, Nguyen Thi Kim Nga, 2007, Bathymetry Mapping from Satellite Images<br />
for Ly Son Island, Quang Ngai Province, VNU JOURNAL OF SCIENCE. Earth<br />
sciences, T.xxIII, NOI: 51-58.<br />
8. Tong P. H. S., Auda Y., Populus J.,Aizpuru M., Al Habshi A., Blasco F.. 2004,<br />
Assessment from space of mangroves evolution in the Mekong delta, in relation with<br />
extensive shrimp-farming. International Journal of Remote Sensing 2004, (25). 21, p.<br />
4795-4812.<br />
9. Uy ban Khoa hgc va Ky thuat Nha nude, 1981, Quy pham dieu tra tdng hgp bien<br />
QPVN, Phin Rong biin, tr. 1-79.<br />
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