†
: This work was researched by the supporting project to educate GIS experts.
Corresponding author: Chul-Uong Choi, Dept. of Geoinformatic Engineering, Pukyung National University, Busan 608-737, Korea, Tel.: +82-51-629-6655, E-mail: [email protected]
A Comparison of Urban Growth Probability Maps using Frequency Ratio and Logistic Regression Methods †
Park, So-Young* ․ Jin, Cheung-Kil* ․ Kim, Shin-Yup** ․ Jo, Gyung-Cheol** ․ Choi, Chul-Uong*
* De pt .ofGe oi nf or mat i cEngi ne e r i ng,PukyungNat i onalUni ve r s i t y
* * Envi r onme nt alDat aandI nf or mat i onOf f i c e ,Mi ni s t r yofEnvi r onme ntRe publ i cofKor e a
ABSTRACT
Top r e d i c tu r b a ng r o wt ha c c o r d i n gt oc h a n g e si nl a n dc o v e r ,p r o b a b i l i t yf a c t o r swe r ec a l c u l a t e da n dma p p e d .To p o g r a p h i c , g e o g r a p h i ca n ds o c i a la n dp o l i t i c a lf a c t o r swe r eu s e da sp r e d i c t i o nv a r i a b l e sf o rc o n s t r u c t i n gp r o b a b i l i t yma p so fu r b a n g r o wt h .Ur b a ng r o wt h - r e l a t e df a c t o r si n c l u d e de l e v a t i o n ,s l o p e ,a s p e c t ,d i s t a n c ef r o m r o a d ,r o a dr a t i o ,d i s t a n c ef r o m t h e ma i nc i t y ,l a n dc o v e r ,e n v i r o n me n t a lr a t i n ga n dl e g i s l a t i v er a t i n g .Ac c o u n t i n gf o rt h e s ef a c t o r s ,p r o b a b i l i t yma p so fu r b a n g r o wt hwe r ec o n s t r u c t e du s i n gf r e q u e n c yr a t i o( FR)a n dl o g i s t i cr e g r e s s i o n( LR)me t h o d sa n dt h ee f f e c t i v e n e s so ft h er e s u l t s wa sv e r i f i e db yt h er e l a t i v eo p e r a t i n gc h a r a c t e r i s t i c( ROC) .ROCv a l u e so ft h eu r b a ng r o wt hp r o b a b i l i t yi n d e x( UGPI )ma p s b yt h eFRa n dLRmo d e l swe r e0 . 9 3 7a n d0 . 9 4 0 ,r e s p e c t i v e l y .Th eLRma ph a das l i g h t l yh i g h e rROCv a l u et h a nt h e FRma p ,b u tt h en u me r i c a ld i f f e r e n c ewa ss l i g h t ,wi t hb o t hmo d e l ss h o wi n gs i mi l a rr e s u l t s .
Th eFRmo d e li st h es i mp l e s tt o o lf o rp r o b a b i l i t ya n a l y s i so fu r b a ng r o wt h ,p r o v i d i n gaf a s t e ra n de a s i e rc a l c u l a t i o n p r o c e s st h a no t h e ra v a i l a b l et o o l s .Ad d i t i o n a l l y ,t h er e s u l t sc a nb ee a s i l yi n t e r p r e t e d .I nc o n t r a s t ,f o rt h eLRmo d e l ,o n l y al i mi t e da mo u n to fi n p u td a t ac a nb ep r o c e s s e db yt h es t a t i s t i c a lp r o g r a m a n das e p a r a t ec o n v e r s i o np r o c e s sf o ri n p u t a n do u t p u td a t ai sn e c e s s a r y .I nc o n c l u s i o n ,a l t h o u g ht h eFRmo d e li st h es i mp l e s twa yt oa n a l y z et h ep r o b a b i l i t yo fu r b a n g r o wt h ,t h eLRmo d e li smo r ea p p r o p r i a t eb e c a u s ei ta l l o wsf o rq u a n t i t a t i v ea n a l y s i s .
Ke yWo r d s :Fr e q u e n c yRa t i o ,Lo g i s t i cRe g r e s s i o n ,Re l a t i v eOp e r a t i n gCh a r a c t e r i s t i c ,Ur b a nGr o wt h ,Ur b a nGr o wt h Pr o b a b i l i t yI n d e xMa p
Ⅰ.I nt r oduc t i on
A c i t yi sapl ac eo fpo l i t i c al ,e c o no mi cands o c i alac t i vi t i e s . Gl o bal l y,ur bani z at i o nhasi nc r e as e ddr as t i c al l yo ve rt hepas t c e nt ur y.Ur bani z at i o ni nf l ue nc e spo pul at i o ns i z eandde ns i t y, haswi de -r angi ngs o c i alande c o no mi ci mpl i c at i o nsanddr i ve s c hange si nl andus e(J e o nge tal . ,2 002).Sc ho l ar sge ne r al l y c l as s i f yur bangr o wt hi nt hr e eways :s pi l l o ve re xpa ns i o n,l e a p- f r o ggi nge xpa ns i o n,o rr a di a le xpa ns i o n( Ca dwa l l a de r ,1 9 8 5 ) .Spi l - l o ve re xpans i o no c c ur swhe nt heur bani z e dar e anat ur al l ye x- pandsi nt os ur r o undi ngar e ast oac c o mmo dat et hef unc t i o ns
andac t i vi t i e so ft hec e nt r alc i t y.Spi l l o ve re xpans i o nc r e at e s
c o mpl i c at e di s s ue s ,s uc hast r af f i cc o nge s t i o n,e nvi r o nme nt al
po l l ut i o n,r e duc t i o no fo pe ns pac eando bs o l e t e ne s so fado wn-
t o wnc o r e ,aswe l lhass o c i ali mpl i c at i o nsi fde ve l o pme nti s
di s o r de r e d(Le e ,2008) .Le apf r o ggi nge xpans i o no c c ur swhe n
t hef unc t i o nsandac t i vi t i e so ft hec e nt r alc i t ye xpandi nt o
ur bani z e dpat c he sbe yo ndt hec e nt r alr e gi o nbe c aus eo fde ve l -
o pme ntr e s t r i c t i o nsandnat ur albo undar i e so ft heur bani z e d
ar e a.Fi nal l y,r adi ale xpans i o nt ake spl ac ewhe nur bani z at i o n
s pr e adsal o ngan e xi s t i ngpr i nc i pl er o ads ys t e m.Suc h e x-
pans i o nf o r msas t ar -s hape dpat t e r nwi t ht hear mso fur bani -
z at i o npr o t r udi ngf r o m ac e nt r alc o r e .The s et hr e eme c hani s ms o f t e nc o mbi net oe xpandac i t y’ st e r r i t o r y(J e o ng,2001) .
Ur bani z at i o nhaspo t e nt i all ar ge - s c al ei mpac t sandunde r - s t andi ngho w ac i t yhasgr o wni si mpo r t antf o rur banman- age r sai mi ngf o rs us t ai nabl ec i t ye xpans i o n,f o r e c as t i ngur ban gr o wt ha nds e e ki ngvi abl eal t e r nat i ve s(Ka nga ndPa r k,20 00 ).
De ve l o pe dc o unt r i e ss uc hast heU. S.havewo r ke dt ode ve l o p pr e di c t i o nmo de l so fur bangr o wt hf o rt hes c i e nt i f i cmanage- me nto fur ban ar e asand have be ne f i t e d f r o m s t at e - o f - t he -ar tt e c hno l o gy s uc h asr e mo t es e ns i ngdat aandge o- gr aphi ci nf o r mat i o ns ys t e ms(GI S)( Ki m e tal . ,20 07).Rul e - bas e ds i mul at i o nmo de l sande mpi r i c ale s t i mat i o nmo de l sar e po pul arme t ho dsf o rpr e di c t i ngur bane xpans i o n.Rul e -bas e d s i mul at i o nmo de l sar emo s t l ybas e do nt hec e l l ul araut o mat a (CA)mo de l ,whi c hi sus e di nvar i o usUr banGr o wt hMo de l s (UGMs )andt heSl o pe ,Landus e ,Exc l us i o n,Ur bane xt e nt , Tr ans po r t at i o nandHi l l s hade(SLEUTH)mo de lde ve l o pe dby Pr o f .Ke i t hC.Cl ar ke(Bat t ye tal . ,198 9;Bat t yandXi e , 1994 ;Bat t yandXi e ,1997;Cl ar ke e tal . ,1997;Whi t e e tal . , 1997 ;Si l vaandCl ar ke ,2002).Rul e -bas e ds i mul at i o nmo de l s ar ebe s ts ui t e df o ri nc o r po r at i ngs pat i ali nt e r ac t i o ne f f e c t sand handl i ngt e mpo r aldynami c s .Ho we ve r ,CA mo de l sf o c uso n t hes i mul at i o no fs pat i alpat t e r nsr at he rt hano ni nt e r pr e t at i o n o runde r s t andi ng o ft hes pat i o t e mpo r alpr o c e s s e so fur ban gr o wt h.Empi r i c ale s t i mat i o nmo de l sus es t at i s t i c alt e c hni que s t omo de lt her e l at i o ns hi psbe t we e nl andus ec hange sandt he i r dr i ve r sbas e do nhi s t o r i c aldat a(HuandLo ,2 007).Huand Lo( 2007),Che ungandMas s e r(2003)andAl l e nandLu (200 3)appl i e dl o gi s t i cr e gr e s s i o n(LR)asane mpi r i c ale s t i - mat i o nme t ho dt omo de lur bangr o wt hi naGI Se nvi r o nme nt andt odi s c o ve rt her e l at i o ns hi pbe t we e nur bangr o wt hand t hedr i vi ngf o r c e s .Vo l dkampandFr e s c o(1996 )andVe r bug e tal .(200 2)us e dLR t oc al c ul at et hepr o babi l i t yo fi nput val ue sf o rt heCo nve r s i o no fLandUs ea ndi t sEf f e c t s(CLUE) mo de l .I nt hatmo de l ,l and-us epr o babi l i t yc anc hangedur i ng as i mul at i o nbyf e e dbac kme c hani s mso fl and-us epr ac t i c e s andpr o babi l i t ye f f e c t s .
Wes e l e c t e d avar i e t y o ff ac t o r st hatc an af f e c tur ban gr o wt hwi t ht heai m o fe s t abl i s hi ngamo de lf o rur bangr o wt h i nKo r e abas e dt her e l at i o ns hi pbe t we e nt he s ef ac t o r sandur - bangr o wt h,aswe l last hepr o babi l i t yo fur bangr o wt h.Fac- t o r sr e l at e dt our bangr o wt hc anbet o po gr aphi c al ,ge o gr a- phi c al ,e nvi r o nme nt alands o c i ali nnat ur e .Toc al c ul at et he pr o babi l i t y o fur ban gr o wt h,LR and t hef r e que nc y r at i o
(FR)we r eus e d.TheFRi so f t e nappl i e dt ol ands l i der e s e ar - c h.Fo re xampl e ,Le ea ndSamba t h( 2 0 0 6 )a ndLe e e tal .( 200 0) c o ns t r uc t e d a l ands l i des ui t abi l i t y map us i ng t heFR and de mo ns t r at e dt hes ui t abi l i t yo ft heFRasapr e di c t o ro fl and- s l i depr o babi l i t y.Us i ngLRandFRme t ho ds ,wede ve l o pe dan ur bangr o wt hpr o babi l i t yi nde x(UGPI )mapsaf t e rc al c ul at - i ngt hepr o babi l i t yo fur bangr o wt h.Weal s oc al c ul at e dt he r e l at i veo pe r at i ngc har ac t e r i s t i c(ROC)t oe xami net hee f f e c- t i ve ne s so ft hemo de l sf o rur bangr o wt h-r e l at e df i e l ds .
Ⅱ.Mat e r i al sandMe t hods
1 .St udyAr ea
Thi sr e s e ar c hf o c us e do nt heRe publ i co fKo r e a( he r e af t e r Ko r e a),l o c at e do nt heKo r e anPe ni ns ul aatt hee as t e r nmo s t e ndo ft heAs i anc o nt i ne nt .Wee xami ne dt hee nt i r el andar e a o fKo r e a,i nc l udi ngJ e j udo ,wi t ht hee xc e pt i o no fs o mes mal l i s l andso nt hee as tandwe s tc o as t s ,i nc l udi ngUl l e ungI s l and andDokdo.Thes t udyar eal i esbet weent hel at i t udes34°
18′42 ″ a nd3 7 ° 2 2′4 3″ a ndt hel o ngi t ude s12 4 ° 1 9′3 0″ a nd 1 3 0 °5 2 ′3 1 ″ a ndc o ve r sa na r e ao f1 0 0 , 5 6 0 . 8 7km
2( Re f e rt oFi - gur e1 ) .Te mpo r al l y,wef o c us e do nt hemi d-1 980 sandt he mi d-20 00s .
Wi t hi nKo r e a,c i t i e st hatado pt e de xpans i o n- o r i e nt e dand t o p-do wn de ve l o pme nts t ar t i ng i n t he 1960 shavegr o wn dr ama t i c al l y(J e o ng,200 1).Dur i ngt hee a r l y19 60s ,c i t i e st hat be c amehubso fi ndus t r i al i z at i o ns ho we dr api de xpans i o nand dur i ngt hel at e1960 s ,hi ghe c o no mi cgr o wt hf ue l e dur bani z a- t i o ne ve nmo r e .Thet r e ndo fur bani z at i o nc o nt i nue di nt ot he 1970 s ~19 80s ,r e s ul t i ngi nme ga-c i t i e ss uc hasSe o ul ,Bus an, Dae gu,I nc he o n,Gwangj u and Dae j e o n,aswe l las t he i r s at e l l i t ec i t i e sandi ndus t r i alc i t i e ss uc hasGumi ,Changwo n, Po hang,Ul s an,Ye o s uandGwangyang.Theur bani z at i o nr at e was o nl y appr o xi mat e l y 50% i n 1 970,buti tdr as t i c al l y i nc r e as e dt o99% by200 0.
Ame t r o po l i sa c c o mpani e dbyr api dur ba ngr o wt ho f t e nf a c e s
c o mpl i c at e dpr o bl e mss uc hast r af f i cc o nge s t i o n,po l l ut i o n,l o s s
o fo pe ns pac e ,ur bande c l i ne ,t hehaphaz ar de xpans i o n(Le e
andShi m,200 6).I nKo r e a,t hec o nc e nt r at i o no fpo pul at i o ni n
me t r o po l i t anar e ashasl e dt oi nc r e as e dl andpr i c e s ,ho us i ng
s ho r t age sandt r af f i cc o nge s t i o n,whi c hhavef ur t he rs pur r e d
s ubur bane xpans i o n( SaGo ngandKi m,2004) .Fur t he r mo r e ,
l ar ge -s c al er e s i de nt i alde ve l o pme nt si nme t r o po l i t anar e asand
Fi gu r e1 .St udyar ea
Le ge nd: J e j u Gwangj u Bus an J e o l l ana m-do Ul s a n Gye o ngs a ngna m-do Dae gu J e o l l abuk- do Dae j e o n Chungc he o ngna m-do Gye o ngs a ngbuk-do Chungc he o ngbuk- do Se o ul I nc he o n
Gye o nggi -do Ga ngwo n- do
t hei nt r o duc t i o n o fapar t me ntho us i ng i n quas i -agr i c ul t ur al z o ne shaveno tbe e nhar mo ni o uswi t hs ur r o undi ngl ands c ape s . Aso f t e nt hec as ewi t hi mpr o pe rur bande ve l o pme nt ,s o c i al pr o bl e mshavear i s e ni nt he s ear e as( Le e ,20 08).
Dat aname Dat at ype Sc al e Spat i alr e s o l ut i o n Da t e Dat as o ur c e To po gr aphi c al
f ac t o r
El e vat i o n Gr i d 25 , 0 00 3 0
2 00 0 KNGI I
aSl o pe Gr i d 25 , 0 00 3 0
As pe c t Gr i d 25 , 0 00 3 0
Ge o gr aphi c a l f ac t o r
Landc o ve r 1 98 0s I mage 25 , 0 00 3 0 19 85 ~1 98 8 KMOE
b2 00 0s I mage 25 , 0 00 10→ 30 20 05 ~2 00 6 KMOE Di s t anc ef r o m r o ad Li ne→ gr i d 5 , 0 00 10→ 30 2 00 7 KMLTM
cRo adr at i o Li ne→ gr i d 5 , 0 00 10→ 30 2 00 7 Aut ho r s Di s t anc eo fur bana r e a Gr i d 25 , 0 00 10→ 30 2 00 7 Aut ho r s Envi r o nme nt als o c i a l
f ac t o r
Gr adeo fe nvi r o nme nt alva l ue Gr i d 25 , 0 00 10→ 30 2 00 5 KMOE Gr a deo fl e ga lr e s t r i c t i o n Gr i d 25 , 0 00 10→ 30 2 00 5 KMOE
a
:Ko r e aNat i o nalGe o gr aphi cI nf o r mat i o nI ns t i t ut e
b
:Ko r e aMi ni s t r yo fEnvi r o nme nt
c
:Ko r e aMi ni s t e ro fLand,Tr ans po r tandMa r i t i meAf f a i r s Tabl e1 .I nputdat a
2 .Spat i alDat abaseConst r uc t i onus i ngGI S
Di ve r s emat e r i al shavebe enus edt os t udyur bangr o wt h.
Al l e nandLu(2003)de f i ne df i vec at e go r i e sf o rr e s e ar c ho n ur bangr o wt h,i nc l udi ngnat ur e /e nvi r o nme nt alas pe c t s ,l and us e ,po pul at i o n/ho us i ng,i nf r as t r uc t ur e / f ac i l i t i e sandpo l i c i e s / s o c i alf ac t o r s .Addi t i o nal l y,KangandPar k(200 0)e xami ne d t o po gr aphi c ,ge o gr aphi c ,phys i c alands o c i alandpo l i t i c alf ac- t o r s .Fo l l o wi ngt he s es t udi e s ,wei nc o r po r at e dt o po gr a phi cf a c- t o r so fe l e vat i o nands l o pe ,aswe l lasge o gr aphi cf ac t o r so f l andc o ve r ,di s t anc ef r o m r o ad,r o adr at i oanddi s t anc ef r o m ur banar e aandf i nal l y,e nvi r o nme nt alands o c i alf ac t o r so f gr ade so fe nvi r o nme nt alval ueandl e galr e s t r i c t i o n(Re f o rt o Tabl e1).
Da t ao nt hea bo vef ac t o r swe r ec o l l e c t e df r o m r e l at e do r gani - z at i o nsandc o nve r t e di nt oas pac edat abas eus i ngAr c GI S9. 3 ( ESRI ,2 0 08 )andERDAS9 . 2( Le i c aGe o s ys t e msGe o s pat i al I magi ng,20 08 ).Dat aba s e swe r ec o nve r t e di nt o30 m ×30 mgr i d s i z eAr c I nf oGRI Df i l e s ,wi t h11 , 22 7ho r i z o nt a lgr i dpo i nt sand 19, 789ve r t i c algr i dpo i nt s ,f o rat o t alo f222, 171, 10 3po i nt s .
I naddi t i o n,49, 859po l ygo nswe r ee xt r ac t e df r o m ur banand bui l t -upar e asus i ngl andc o ve rmapsf r o m 1980sand20 00s madebyt heMi ni s t r yo fEnvi r o nme nt .Ur banandbui l t -up ar e asi nc l ude dr e s i de nt i al ,i ndus t r i alandc o mme r c i alz o ne s ,as we l lasr e c r e at i o nalf ac i l i t i e s ,t r ans po r t at i o nar e as ,publ i cf a- c i l i t i e sanddr ya r e as( i . e . ,ur banar e aso rar e aswi t hc o mpl e t e d de ve l o pme nt ).Smal l -s c al ede ve l o pme nta r e as( l e s st han1ha) we r eno ti nc l ude d.Tabl e1pr o vi de sde t ai l so nt hedat ac o m- pi l e di nt hedat abas e .
To po gr aphi cdat awe r eo bt ai nedf r o m adi gi t ale l evat i on
a :El e va t i o n b:Sl o pe c :As pe c t
d:19 80 sl a ndc o ve rmap e :Di s t a nc ef r o m r o ad f :Ro adr at i o Fi gur e2 .Par amet ermapsoft hes t u dyar ea
Le ge nd:a: 0~2 00 20 0~4 00 40 0~6 00 60 0~8 00 80 0 ~1, 0 00 1, 00 0 ~1, 2 00 1, 20 0 ~1, 4 00 1, 40 0 ~1, 6 00 1, 60 0 ~
b: 0~1 0 10 ~20 20 ~30 30 ~40 40 ~50 50 ~
c : No r t h Ea s t So ut h We s t Fl a t
d: Ur ban Fa r l and Fo r e s t Gr a s s l and We t l a nd Bar el a nd Wat e r s
e : Hi gh:4 , 7 75 9 Lo w:0
f : Hi gh:9 0. 6 Lo w:0
mo de l(DEM)c r e at e df r o m 1: 25, 000-s c al et o po gr aphi cmaps o ft heKNGI Iande l e vat i o n,gr adi e ntandas pe c twe r eanal y- z e d.Thegr adi e nti ndi c at e st hes l o pe ,whi l et heas pe c ti n- di c at e st hedi r e c t i o no fge o gr aphi ci nc l i ne .
Ont hebas i so fge o gr aphi cf ac t o r s ,1:2 5, 000-s c al el andc o v- e rmapswe r ede ve l o pe dbyt heKMOE.Thec o nve r s i o nc o de s andde f i ni t i o nso fl andc o ve ro nt hemapswe r easf o l l o w:1.
Wat e r ,2.Ur ban,3.Bar el and,4.We t l and,5.Gr as s l and,6.
Fo r e s tand7.Far ml and.I naddi t i o n,us i ng1:5 , 0 00-s c al er o ad
mapspr o duc e dbyt heKMLTM,t hedi s t anc e sf r o m r o ads
andt her o adr at i o swe r eanal yz e d.Di s t anc ef r o m r o adi n-
di c at e st hedi s t anc ef r o m t hepr i nc i pl er o ads ys t e m t ot he
c e nt e ro ft hede ve l o pme ntar e aandwasus e df o rt hedi s t anc e
f unc t i o ni nAr c Vi e w GI S3. 3t opr o duc eandanal yz et her o ad
g:Di s t a nc eo fur ba nar e a h:Gr adeo fe nvi r o nme nt a lval ue i :Gr adeo fl e galr e s t r i c t i o n
j :19 80 sur banar e a k:20 00 sur banar e a Fi gur e2 .Cont i nued
Le ge nd:g: Hi gh:9 0, 00 4. 5 Lo w :0 . 0
h: Fi r s t -c l as s Se c o nd- c l a s s Thi r d-c l as s Fo r t h- c l a s s Fi f t h-c l as s
i : Fi r s t -c l as s Se c o nd- c l a s s Thi r d-c l as s Fo r t h- c l a s s Fi f t h-c l as s
j : Ur ban No n-ur ban
j : Ur ba n No n- ur ba n
ne t wo r kbuf f e r .He r e ,t hepr i nc i pl er o ads ys t e m wasde f i ne d ast her o adst hatc o nne c t e di mpo r t antr e gi o ns ,i nc l udi ngal l nat i o nalhi ghways ,l o c alhi ghways ,nat i o nale xpr e s swaysand o t he rmaj o rt hr o ughwayso fme t r o po l i t anc i t i e sasde f i ne dby l o c algo ve r nme nt sunde rt heRo adAc t .Wedi dno ti nc l ude s mal lr o adss uc hasal l e yso f5m o rl e s sandagr i c ul t ur eand f i s hi ngvi l l ager o ads .Ther o adr at i oadde dval uet ot hegr i d- bas eac c o r di ngt ot henumbe ro fve hi c l el ane so ft her o ad ne t wo r kandt heac c umul at e dval uef o rz o nals t at i c swasc al - c ul at e df o rt her at i oo ft hee nt i r ear e af o re ac hde ve l o pme nt
ar e a.The r e f o r e ,t heac t ualr o adr at i odi s pl ayst her e l at i ver o ad o c c upa nc yr at i o ,no tt heo c c upanc yr at i o .Ur ba nar e aswe r e c o ns i de r e d t o c o ve r at l e as t 100 ha ac c o r di ng t o t he 1:25 , 0 00-s c al el andc o ve rmapso ft heKMOE andt hedi s - t anc ef unc t i o no fAr c GI S9. 3wasus e dt oge ne r at et hedo wn- t o wnbuf f e rf o rt heanal ys i s .
Forenvi r onment al /s o ci alf ac t or s ,weac qui r e ddat af r o m
t he1:2 5, 000-s c al eEnvi r o nme nt alCo ns e r vat i o nVal ueAs s e s s -
me ntMap(ECVAM)o ft heKMOE.TheECVAM i sat o po-
gr aphi cmapwi t hcol orcat egor i ess howi ngnat i onall and
c l as s i f i e di nt of i vegr ade s ,wi t hc l as s1r e pr e s e nt i ngt hemo s t envi r onment al l yval uabl el and.Themapwaspr oduce dby c o mpr e he ns i vee val uat i o no fvar i o usas pe c t so fe nvi r o nme nt al val ue ,wi t ht heai m o ff ur t he r i ngc o ns e r vat i o nandenvi r o n- me nt al l yf r i e ndl yl and-us epl anni ngandde ve l o pme nt .
Ⅲ.Re s ul t s
1 .Fr equenc yRat i oModel
I nge ne r al ,t opr e di c tur bani z at i o n,i ti sne c e s s ar yt oas s ume t hatur bangr o wt hi sde t e r mi ne dbyc e r t ai nur bangr o wt h- r e l at e df ac t o r sandt hatf ut ur eur bangr o wt hwi l lo c c urunde r t hes amec o ndi t i o nsaspas tur bangr o wt h.Us i nguni var i ant pr o babi l i t yanal ys e sandt heFRme t ho d,t hes pat i alr e l at i o n- s hi pbe t we e nt her e gi o nso fur bangr o wt hande ac hur ban gr o wt h-r e l at e d f ac t o rwasanal yz e d.Thi sr e l at i o ns hi p was us e dt ode t e r mi neho w e ac hf ac t o rwasr at e di nt heo ve r l ay anal ys i s(Le eandTal i b,2 005);i . e . ,t hec o r r e l at i o nanal ys i s wasdi vi de di nt ot her at i of o rt heur bani z at i o nar e abe t we e n t hes c o peo fe ac hf ac t o randt ypebyt her at i of o re ac hgr ade o ff ac t o ri nt hee nt i r ear e a(Le e e tal . ,2000).I nt hec as eo f ur bangr o wt h,i fwes e tt heur bangr o wt ho c c ur r e nc ee ve ntt o ber e pr e s e nt e d by af ac t o r ,‘ B’ ,andt heat t r i but e so ft he f ac t o rwe r ede no t e d by ‘ D’ ,t he n t heFR o f‘ D’wast he c o ndi t i o nalpr o babi l i t yr at i o(Le eandSamba t h,2 00 6) .Val ue s o f1we r ec o ns i de r e dave r age ,whe r e asval ue sgr e at e rt han1 i ndi c at e dahi ghe rc o r r e l at i o nwi t hur bangr o wt handval ue s l e s st han1s ho we dl o we rc o r r e l at i o ns .TheUGPIus e dt he f o l l o wi ng f o r mul a (1) t o de t e r mi negr adeval ue so fe ac h f ac t o r ,s t ar t i ngwi t haf ac t o rval ueo f1andt he ns ummi ng t het o t alval ue(Le e e tal . ,20 00).
(Fo r mul a 1)
Whe r e , FR=Rat i ngo fe ac hf ac t o rt ypeo rr ange
Tabl e2s ho wst her e l at i o ns hi pbe t we e nt heo c c ur r e nc eo f ur bangr o wt hande ac hf ac t o r .Ase l e vat i o ni nc r e as e d,t he f r e que nc yo fur bangr o wt hge ne r al l yde c r e as e d.I npar t i c ul ar , e l e vat i o nsr angi ngf r o m 0~100m s ho we dahi ghpr o babi l i t y o fur bangr o wt h.Ther e l at i o ns hi pbe t we e ns l o peandur ban gr o wt hs ho we dt hatur bangr o wt hge ne r al l yo c c ur r e dwhe n s l o pe sr ange df r o m 1 ~12 ° .Sl o pe sl e s st han1 2°s ho we dr at i o s
>1,whi c h i ndi c at e sa hi gh pr o babi l i t y o fur ban gr o wt h o c c ur r e nc e .Fo rs l o pe ss t e e pe rt han12° ,t her at i owas<1,i n- di c at i ngal o w pr o babi l i t yo fur bangr o wt h.Thes l o peanal y- s e ss ho we dt hatur bangr o wt hwasmo s te xt e ns i veandmo s t c o mmo no ne as t -f ac i ngands o ut h-f ac i ngs l o pe s .
Weal s oas s e s s e dt hei nf l ue nc eo fr o ads ,aswe l lase xi s t i ng ur banandbui l t -upar e aso nt heo c c ur r e nc eo fur bangr o wt h.
Fo rt hi spur po s e ,t hedi s t anc e st or o adsaswe l lasur banand bui l t - upa r e aswe r ei de nt i f i e dbybuf f e r i ng;di s t anc e s<5 , 00 0m s ho we d r at i o s>1,i ndi c at i ng a hi gh pr o babi l i t y o fur ban gr o wt h,whe r e asdi s t anc e s>5, 00 0m s ho we dr at i o s<1 ,i ndi c a- t i ng a l o w pr o babi l i t y o fur ban gr o wt h.I n addi t i o n,t he pr o babi l i t yo fur bande ve l o pme nti nc r e as e dc l o s e rt opr i nc i pl e r o ad s ys t e ms .Fur t he r mo r e ,asr o ad de ns i t y i nc r e as e d,t he ur bangr o wt h f r e que nc yge ne r al l yi nc r e as e d.Spe c i f i c al l y,a r o adr at i oi nt her angeo f40~70% i ndi c at e dahi ghpr o ba- bi l i t yo fur bangr o wt h.Mo r e o ve r ,di s t anc e s<10, 000m f r o m e xi s t i ngur banc e nt e r ss ho we dr at i o s>1,i ndi c at i ngahi gh pr o babi l i t yo fur bangr o wt h,whe r e ast her at i owas<1at di s t anc e s>1 0, 000m,i ndi c at i ngal o w pr o babi l i t yo fur ban gr o wt h.Thi sr e s ul ts ugge s t e dt hat ,i nge ne r al ,c i t i e se xpande d f r o m e xi s t i ngdo wnt o wnar e as .
Whe nt her e l at i o ns hi pbe t we e nur bangr o wt ho c c ur r e nc e and l and c o ve rwas e xami ne d,t he pr o babi l i t y o fur ban gr o wt hwashi ghe s ti ne xi s t i ngur banar e as ,f o l l o we dbybar e l ands ,we t l ands ,gr as s l andsandf ar ml andsandwasl o we s ti n wat e rand f o r e s tar e as .I n Ko r e a,mo unt ai no usar e asar e pr o t e c t e dandur bani z at i o nmo s t l yo c c ur svi at hede ve l o pme nt o ff ar mi ngandgr as s l andar e as .
Whe nur bangr o wt hwase val uat edagai ns tt hegr adeof e nvi r o nme nt alval ue ,gr o wt hwasgr e at e ri nar e asas s i gne da gr adeo f5.Thi sme anst hatde ve l o pme ntmo s to f t e no c c ur s i nr e gi o nswhe r et hec o ns e r vat i o nval uei sr e l at i ve l yl o w and i sl e s sl i ke l yi nar e aso fhi ghe re nvi r o nme nt alval uewhi c har e gener al l ywel lpr ot ect ed.Ther el at i ons hi pbet weenur ban gr o wt ho c c ur r e nc eandt hegr adeo fl e galr e s t r i c t i o nz o ne s s ho we dhi ghe rur bangr o wt ho c c ur r e nc eval ue si nr e gi o nsas - s i gne dgr ade so f3and5.Thi ss ugge s t st hatl ar ge -s c al ede- ve l o pme nti st aki ngpl ac ei nl e galr e s t r i c t i o nz o ne s ,gi ve nt hat t her at i owas>1i nar e asas s i gne dagr adeo f3 ,whi c hi n- di c at e sahi ghl e gi s l at i vec o ns e r vat i o nval ue .The s er e s ul t sar e c o nt r a r yt ot ho s eo ft hee nvi r o nme nt a lgr ade( Re f r et oTa bl e2 ) .
TheUGPImap,s ho wni nFi gur e3,i nc l ude sf i vec at e go r i e s
o fc l as s i f i c at i o ns .
Cl a s s e s Do mai n( %) (A)
Ur bangr o wt h (%)( B)
Rat i o (A/ B)
El e va t i o n
0 ~2 5 3 1. 80 12 . 0 7 2. 63 2 5~5 0 2 2. 92 8 . 0 9 2. 83 51 ~1 00 2 3. 17 13 . 6 4 1. 70 10 0~2 00 1 3. 95 19 . 6 3 0. 71 20 0~3 00 4. 59 14 . 2 0 0. 32 30 0~4 00 1. 73 9 . 8 8 0. 18 40 0~5 00 0. 84 6 . 9 0 0. 12 50 0~6 00 0. 44 4 . 8 8 0. 09 60 0~7 00 0. 30 3 . 5 7 0. 08 70 0~8 00 0. 16 2 . 6 9 0. 06 80 0~9 00 0. 04 1 . 9 0 0. 02 9 00 ~1 00 0 0. 03 1 . 2 1 0. 02 1 00 0~1 10 0 0. 01 0 . 7 0 0. 02 1 10 0~1 20 0 0. 00 0 . 3 7 0. 01 1 20 0~1 30 0 0. 00 0 . 1 8 0. 02 1 30 0~1 40 0 0. 01 0 . 0 8 0. 14
Sl o pe
0~3 5 0. 56 24 . 7 4 2. 04 3~6 2 3. 09 9 . 8 8 2. 34 6 ~1 2 1 9. 06 18 . 3 4 1. 04 1 2~1 8 5. 43 18 . 3 3 0. 30 1 8~2 4 1. 47 15 . 4 3 0. 10 2 4~3 0 0. 31 9 . 3 2 0. 03 3 0~3 6 0. 09 3 . 4 2 0. 03 3 6~4 2 0. 00 0 . 5 4 0. 01
As pe c t
N 1 8. 56 23 . 0 3 0. 81 E 2 6. 86 25 . 2 9 1. 06 S 2 6. 39 23 . 3 4 1. 13 W 2 2. 58 25 . 5 5 0. 88
Di s t anc e f r o m r o a d
1 ~2, 50 0 8 8. 46 97 . 4 1 1. 10 2, 50 0~5 , 0 00 8. 45 1 . 2 1 0. 14 5 , 0 00 ~1 0, 00 0 0. 65 1 . 6 5 0. 39 1 0, 00 0~2 0, 00 0 0. 52 1 . 0 7 0. 49 2 0, 00 0~3 0, 00 0 0. 16 0 . 2 7 0. 57 3 0, 00 0~4 0, 00 0 0. 05 0 . 0 7 0. 72 4 0, 00 0~5 0, 00 0 0. 01 0 . 0 2 0. 24
Ro ad r at i o
0 ~1 0 7 0. 18 95 . 6 0 0. 73 1 0~2 0 1 2. 29 2 . 7 4 4. 49 2 0~3 0 6. 56 0 . 7 3 9. 01 3 0~4 0 5. 44 0 . 5 0 1 0. 79 4 0~5 0 3. 42 0 . 2 6 1 2. 96 5 0~6 0 1. 48 0 . 1 1 1 3. 00 6 0~7 0 0. 54 0 . 0 4 1 3. 59
Ur ban di s t anc e
0 ~5, 00 0 2 9. 81 10 . 9 1 2. 73 5 , 0 00 ~1 0, 00 0 2 1. 68 15 . 4 5 1. 40 1 0, 00 0~1 5, 00 0 1 5. 30 16 . 3 6 0. 94 1 5, 00 0~2 0, 00 0 1 0. 72 14 . 6 2 0. 73 2 0, 00 0~2 5, 00 0 8. 39 13 . 4 8 0. 62 2 5, 00 0~3 0, 00 0 4. 78 9 . 0 2 0. 53 3 0, 00 0~4 0, 00 0 4. 79 10 . 4 0 0. 46 4 0, 00 0~5 0, 00 0 2. 54 6 . 2 1 0. 41 5 0, 00 0~6 0, 00 0 1. 21 2 . 0 4 0. 59 6 0, 00 0~7 0, 00 0 0. 49 0 . 9 9 0. 50 7 0, 00 0~8 0, 00 0 0. 20 0 . 3 9 0. 51 8 0, 00 0~9 0, 00 0 0. 08 0 . 1 4 0. 55 Tabl e2 .FRFac t oro nur bangr owt h
Land c o ve r
Wat e r 1 . 4 7 1 . 9 4 0. 76 Ur ban 24 . 0 4 2 . 1 1 1 1. 41 Bar el and 5 . 4 8 1 . 2 8 4. 28 We t l and 0 . 8 8 0 . 7 6 1. 16 Gr as s l and 6 . 1 8 3 . 7 4 1. 65 Fo r e s t 17 . 5 4 66 . 4 2 0. 26 Far ml a nd 44 . 4 0 23 . 7 5 1. 87
Gr adeo f e nvi r o n- me nt al va l ue
0 2 . 2 5 6 . 1 2 0. 37 1 6 . 1 7 36 . 1 6 0. 17 2 7 . 1 7 21 . 8 9 0. 33 3 0 . 7 4 6 . 6 5 0. 11 4 6 . 7 2 14 . 4 8 0. 46 5 76 . 9 4 14 . 7 0 5. 23
Gr adeo f l e gal r e s t r i c t i o n
z o ne s
1 11 . 2 9 21 . 2 6 0. 53 2 7 . 8 7 38 . 2 7 0. 21 3 33 . 8 8 21 . 5 2 1. 57 4 5 . 2 4 8 . 3 6 0. 63 5 41 . 7 1 10 . 5 9 3. 94 ( Tabl e2 .Cont i nued)
Fi gu r e3 .Ur bangr o wt hpr obabi l i t yi ndexmappr o du c edf r o m t he f r equ enc yr at i omodel
Le ge nd: Ve r yhi gh, Hi gh
Mi ddl e , Lo w
Ve r yl o w
2 .Logi st i cRegr ess i onModel
LR,at ypeo fmul t i var i at eanal ys i s ,i sus e f ulf o rpr e di c t i ng t hepr e s e nc eo rabs e nc eo fac har ac t e r i s t i co ro ut c o mebas e d o nval ue so fas e to fpr e di c t o rvar i abl e s(Le eandSambat h, 2006 ).TheLR mo de lwasde ve l o pe dbyMc Fadde n(1 973) andLandi sandZhang(1 997)ando t he r shaveappl i e di tf o r mo de l i ng ur ban gr o wt h.The LR mo de li sbas e d o n t he r ando m ut i l i t yt he o r yandt hedi s c r e t ec ho i c et he o r yi nur ban e c o no mi c ss t udy.Spe c i f i c al l y,t hee f f i c ac y o fc e r t ai n l and me as ur abl e st obe ne f i tc o ns ume r s ,i nc l udi ngbi d-r e ntandl and pr i c e ,ar ee val uat e dby ade ve l o pe rbas e do n f unc t i o nso f at t r i but e ss uc hast hec har ac t e r i s t i c so fl andc o ve r(Ki m e t al . ,2007) .Theke yt oLR i st hatt hede pe nde ntvar i abl ei s di c ho t o mo us .Thei nde pe nde ntvar i abl e si n t hi smo de lar e pr e di c t o r so ft hede pe nde ntvar i abl eandc anbeme as ur e do n ano mi nal ,o r di nal ,i nt e r val ,o rr at i os c al e .Ther e l at i o ns hi p be t we e nt hede pe nde ntvar i abl eandi nde pe nde ntvar i abl e si s no nl i ne ar(Ye s i l nac arand To pal ,2 005 ).Qua nt i t at i ve l y,t he r e l at i o ns hi pbe t we e nt heo c c ur r e nc eandi t sde pe nde nc yo n s e ve r alvar i abl e sc anbee xpr e s s e das
(Fo r mul a2) whe r e pi st hepr o babi l i t yo fane ve nto c c ur r i ng.I nt hi sc as e , t heval ueo f pi st hee s t i mat e dpr o babi l i t yo fur bangr o wt h o c c ur r e nc e .Thepr o babi l i t yvar i e sf r o m 0t o1o nanS-s hape d c ur ve .I no t he rwo r ds ,ast heval ueo ft hei nde pe nde ntvar i a- bl ewi t ht hes t at i cr e l at i o ns hi pwi t h pge t shi ghe r ,t hepr o ba- bi l i t yt ogr o w i nt oac i t ybe c o me sl ar ge r ,whe r e asast heval - ueo ft hei nde pe nde ntvar i abl ede c r e as e s ,s odo e st hepr o ba- bi l i t y o fur ban gr o wt h.Addi t i o nal l y, zi st hel i ne arc o m- bi nat i o n.I tf o l l o wst hatLRi nvo l ve sf i t t i ngane quat i o no ft he f o l l o wi ngf o r m t ot hedat a:
⋯
(Fo r mul a3) whe r e ,
i st hei nt e r c e pto ft hemo de l ,
⋯
ar et hec o e f f i c i e nt so ft heLRmo de land
⋯
ar et hei nde pe nde ntvar i abl e s .Us i ng LR e quat i o n,al o gi t f unc t i o nc anbee xpr e s s e das( Le eandSambat h,20 06):
ln