Analysis of water quality status in culturing waters in Kaozhou Bay based upon GIS

Transcription

1 JOURNAL OF FISHERIES OF CHINA Vol. 28, No. 5 Oct., 2004 : ) GIS,,,,,,,, ) : GIS, ) 8 ),,,,,,,,,, 2 3,,,, : GIS) ; ; ; :S959 :A Aalysis of water quality status i culturig waters i Kaozhou Bay based upo GIS CAI We2gui, J IA Xiao2pig, LIN Qi, LI Chu2hou, GAN J u2li, WANG Zeg2hua Key Laboratory of Fishery Ecology Eviromet, Miistry of Agriculture & Guagdog Provice, South Chia Sea Fisheries Research Istitute, Chiese Academy of Fishery Scieces, Guagzhou , Chia) Abstract :Supported by the techique of GIS ad database ad based o the survey data of two cruises i February dry seaso) ad August wet seaso) of 1999, this paper aalyzed ad evaluated comprehesively the status of water utriet i Kaozhou Bay by usig the method of data iterpolatio ad grid weightig scheme. I the dry seaso, the water quality accorded with the first class of sea water stadard without ay orgaic pollutio, while i the wet seaso it was i the secod class with obvious orgaic pollutio ad eutrophicatio occurrig i the orthwester waters ad the estuary of Jilog River. The distributio treds of the primary productivity were similar i the two surveys, which were high i the mouth of the bay ad low i the middle ad orthwester waters. The distributios of the food orgaisms were irregular i both of the surveys. I the dry seaso they were evely distributed with most of the waters belogig to the secod or the third level, ad the dese area was foud i the orthwester waters, the mouth of the bay ad the waters aroud Jilog River, while i the wet seaso, the : : 1999) ; ) ; ) ; ) : ),,,, GIS E2mail : et : ),,,,, E2mail : com

2 5 : GIS 523 food orgaism level varied distictly with the dese area occurrig i the middle waters of the bay ad the coastal waters alog Wagjigzhou village. Compared betwee the two surveys, the levels of primary productivity ad food orgaisms i the wet seaso were higher tha those i the dry seaso. Key words :geographic iformatio system GIS) ; Kaozhou Bay ; orgaic pollutio ; eutrophicatio N, E),,,,,,,, ),,,,,, geographic iformatio system, GIS) 1. 3 GIS, [1-4 ] ESRI Arc GIS8. 3 GIS database maagig Spatial Aalysis ) system, DBMS), 1. 4 GIS,,,,,, Krigig [6 ], Krigig 1 :, w, i , ) u = w i v, w ),,, 1. 2 p H DO COD DIN, NH + 3 2N NO - 2 2N NO - 3 2N) IP) a Chl2a) Chl2a ) [ 5 ] 1 Fig. 1 Samplig statios i Kaozhou Bay r i = u - u i m r = 1 r u - u i ) 2 R = 1 r i - m r ) 2 =

3 u - u i ) - u - u i ) [7 ],, W W j j = 1 ij + = i0, 1 i ) W j = 1 j = 1, Arc GIS8. 3 spatial aalysis),,,,, [8 ] : 2 G p = W i C ip, G p p, W i i, C ip i P A [9, 10 ] : A = COD COD s + DIN DIN s + IP IP s - NQI [11 ] : DO DO s 1) NQI = COD + DIN + IP + Chl2a 2) COD s DIN s IP s Chl2a s 1) 2) COD DIN IP DO Chl2a, CODs DINs IPs DOs [11 ], Chl2a, [ 10, 12 ], 5. 0mg m [13 ] 1 Tab. 1 The classes for the evaluatio o the status of orgaic pollutio ad utriet level A A value classes for the pollutio degree water quality evaluatio NQI NQI value classes for the utriet status evaluatio o the utriet status < 0 0 well < 2 1 poor utriet better middle utriet start to be polluted > 3 3 eutrophicatio light pollutio middle pollutio > 4 5 serious pollutio 2 Tab. 2 The evaluatio stadard for the level classes of food orgaisms ad primary productivity evaluatio classes id m - 3 ) desity of phytoplato < > 100 mg m - 3 ) biomass of zooplato < > 100 ) g m - 2 ) biomass of bethos dredge) < > 50 mg m - 2 d - 1 ) primary productivity < > 500 classes descriptio low lower rich richer richest GIS GB ) [12 ], [8, 14 ] 22a) [15, 16 ], DIN IP, ),,, 22a)

4 5 : GIS 525,,,,, 22b),, 2. 2 A, 0 32a), NQI 42a),,, 8 ),,,,,, IP,, IP mol L - 1, mol L - 1, mol L ), A NQI 32b 42b),,,,,, A NQI,,, A NQI, 2 Fig. 2 The sythetic level for the sea water quality a. dry seaso ; b. wet seaso 3 A Fig. 3 The distributio for A value a. dry seaso ; b. wet seaso

5 526 28,, ),,,,,,,,,, N/ P [17 ],, IP, 1 7 ) IP mol L - 1 ), IP,, IP, N/ P ,,,,,, Chl2a, Chl2a, [18 ] 4 NQI Fig. 4 The distributio for NQI value a. dry seaso ; b. wet seaso 5 Fig. 5 The distributio for the primary productivity a. dry seaso ; b. wet seaso

6 5 : GIS GIS 2, [8, 14 ] 6),,,,,,,,,,,, [19 ],,,,,, ),, [20, 21 ] 6 Fig. 6 The distributio for the food orgaisms a. dry seaso ; b. wet seaso 3 1), ;,,,, 2),, ;, 3) ;,,, : [1 ] Shao Q Q. The study ad applicatio of the marie fishery geographic iformatio system [ M ]. Beijig : Sciece Press, [. [ M ]. :, ] [2 ] Su F Z, Zhou C H, Shao Q Q, et al. The developmet, applicatio ad prospect for the marie fishery geographic iformatio system[ J ]. J Fish Chia, 2002, 26 2) : [,,,. [J ]., 2002, 26 2) : ] [ 3 ] Log B. Torres Strait marie geographic iformatio system [A ]. Bellwood O, Choat H, Saxea N : Recet advaces i

7 marie sciece ad techology [ C ]. Hawaii, USA : Paco Itetioal, [4 ] Collis N, Hurlbut S. Evirometal ris aalysis of salvagig the Irvig whale [ A ]. GIS93 [ C ]. Ottawa : The Caadia Istitute of Geomatics,1993, 1 : [5 ] State Oceaographic Admiistratio. Specificatio of oceao2 graphic survey[ S ]. Beijig : Oceaographic Press, [. [ S ]. :, ] [6 ] Wu X C, Guo J Y, Zheg G Z, et al. The theory ad techique for the geographic iformatio system[ M ]. Beijig : Electroic Idustry Press, [,,,. [ M ]. :, ] [7 ] Isaas S. A itroductio to applied geostatistics [ M ]. Oxford Uiversity Press, 1989, 5 1) : [8 ] Xu Z J. The rudimet ad improvemet for GIS [ M ]. Chogqig : Chogqig Uiversity Press, [. GIS [ M ]. :, ] [ 9 ] Tia J Y, Dog J Y. The prelimiary study o the orgaic pollutio ad red tide orgaisms aroud the waters of Yellow River estuary [ J ]. Marie Evirometal Sciece, 1983, 2 1) : [,. [J ]., 1983, 2 1) : ] [10 ] Zhou J Z, Dog L P, Qi B P. The prelimiary study o the eutrophicatio ad red tide i Bohai Bay [ J ]. Marie Evirometal Sciece, 1983, 2 2) : [,,. [J ].,1983, 2 2) : ] [11 ] State Eviromet Protectio Bureau, State Techical Supervi2 sio Bureau. Sea water quality stadard GB ) [ S ]. Beijig : Chia Stadard Press, [,. GB ) [ S ]. :, ] [12 ] Li H Y, Ha W Y. Water quality assessmet ad aalysis before ad after the decade of theory seaso i Ligdigyag estuary of the Pearl River Mouth [J ]. Marie Evirometal Sciece, 2001, 20 2) : [,. [J ]., 2001, 20 2) : ] [13 ] Jia X P, Du F Y, Li Q, et al. A study o comprehesive assessmet method of ecological eviromet quality of marie fishig groud [ J ]. Joural of Fishery Scieces of Chia, 2003, 10 2) : [,,,. [J ]., 2003, 10 2) : ] [ 14 ] ESRI Ic. Arc view spatial aalyst [ M ]. Redlad, CA, USA, [15 ] Compilig Commissio for the Aals of Chiese Bay. The aals of Chiese Bay the fourteeth fascicule : the importat estuaries) [ M ]. Beijig : Oceaographic Press, [. 14 : ) [ M ]. :, ] [16 ] Zhag S Y, Shao J B, Dai X J. Study o eutrophicatio ad phytoplato diversity i Hagzhou Bay [J ]. J Fish Chia, 2001, 25 6) : [,,. [J ]., 2001, 25 6) : ] [ 17 ] Cui Y, Che B J, Ma S S. Study o the relatioship betwee phytoplato ad eviromet factors i Rusha Bay [ J ]. Chiese Joural of Applied Ecology, 2002, 11 6) : [,,. [J ]., 2002, 11 6) : ] [ 18 ] Peg Y H, Che H R, Pa M X, et al. The primary productio ad potetial fishery productio i the sea area aroud the Daya Bay Nuclear Power Statio before ad after the operatio of DBNPS [J ]. J Fish Chia, 2001, 25 2) : [,,,. [J ]., 2001, 25 2) : ] [19 ] Zhou K, Huag C J, Jiag S, et al. Aual dyamics of phytoplato i Zheli Bay : [J ]. Acta Ecologica Siica, 2002, 22 5) : [,,, [J ]., 2002, 22 5) : ] [ 20 ] Agawi N S, Duarte C M, Agusti S. Nutriet ad temperature cotrol of the cotributio of picoplato to phytoplato biomass ad productio [J ]. Limol Oceaogr, 2000, 45 3) : [21 ] Li J M. The distributio for phytoplato i Dogsha Bay, Fujia[J ]. J Oceaography i Taiwa Strait, 1995, 14 1) : [. [J ]., 1995, 14 1) : ]