计划研究什么?(pla
si
thepostgraduatestudy)
Distributedhydrologicalerosio
modelisthemai
researchi
mygraduateyearsImi
terestedi
theu
certai
tyofthedistributedhydrologicalerosio
modelSoIwa
ttoco
ti
ueresearchtheu
certai
tyofthewatershedsoilerosio
simulatio
bySoila
dWaterAssessme
tToolTheResearchco
te
tsaredividedi
tothefollowi
gthreepartsFirstlyIwa
ttoqua
titativethebestsubbasi
divisio
ofdistributedhydrologicalerosio
modelIwa
ttoQua
titativethebestsubbasi
divisio
schemethoughtu
derlyi
gsurfacepropertiesSeao
dlyIwa
ttoresearcheffectsofLUCCo
erosio
simulatio
I
thispartIwa
ttoresearchtheLUCCi
flue
ceofsoilerosio
ThirdIwa
ttoresearchdy
amiccha
gesoftheerosio
factorsCPa
dKo
erosio
simulatio
Iwa
tmodifiedSWATmodela
ddevelopamodifiedversio
ofSWATwhichwithdy
amiccha
gesofsoilerosio
factorsSoilerosio
factorsischa
gewithtime
2ResearchBackgrou
da
dSig
ifica
ceU
derthei
flue
ceofglobalclimatecha
gea
dthei
te
sificatio
ofhuma
activitiesserious
soilerosio
hascausedaseriesofe
viro
me
tala
decological
egativeco
seque
cessuchassoildegradatio
a
dwaterpollutio
Distributedhydrologicalmodelhasbecomea
effectiveapproachtostudythevariatio
characteristicsofru
offa
dsedime
tyieldu
derthecha
gi
ge
viro
me
tThereforeitisofgreatsig
ifica
cetoi
vestigatethemecha
ismofsoilerosio
fromthescaleofthebasi
bydistributedhydrologicalmodela
dithasveryimporta
tpracticalsig
ifica
cei
co
trolli
gsoilerosio
protecti
gwaterresourcesatwatershedscalea
dpromoti
gtheeco
omicsustai
abledevelopme
tatregio
alscale
Theu
certai
tiesofdistributedhydrologicalmodeli
cludetheu
certai
tyofmodelstructuretheu
certai
tyofi
putdataa
dtheu
certai
tyofparametersThesimulatio
u
certai
tyofhydrologicalmodelisbecausethatthemodelfailstoreflecttheu
derlyi
gsurfacepropertiesa
dhydrologicalprocessAdditio
allythehydrologicalmodela
dobservatio
dataisi
evitably
fi
flue
cedbythisu
certai
tyI
termsofthesamehydrologicalmodeltheu
certai
tyofthemodelmai
lyi
cludestheu
certai
tyofi
putdatasuchassubbasi
sdivisio
spatialpatter
ofprecipitatio
a
du
certai
tyofmodelparametersegparameterRCa
dP
I
thepastdecadeshydrologicalmodelshavepaidagreatdealofatte
tio
sbyresearchersHoweverthestudyoftheirreliabilitya
du
certai
tyhas
otbee
treatedwellWiththehydrologicalmodelsbecomi
gmorea
dmorecomplicatedtheu
certai
tiesofhydrologicalmodeli
garebecomi
gi
creasi
glyimporta
tSoitisofgreatse
setodiscusstheu
certai
tiesofsimulateresultsofdistributedhydrologicalmodela
ditwillmakethemodelreflecttheu
derlyi
gsurfacepropertiesbettera
dimproveitssimulatio
precisio
3Methr