Page 95 - 《水资源与水工程学报》2024年第5期
P. 95
! 5# ÜÝÞ, :: ßàáâhh&ãäåæçFJwKLMN 9 1
3
m afterthediversion;themeanannualrunoffofLangxinshantoEastJuyanLakesectionamountedto617
6
3
×10 m(representingtheavailablewaterresourcesintheoasis),whichconcentratedmainlyinperiods
ofApril-MayandSeptember-October.Spatially,theareaofpermanentwaterbodiesprogressivelyin
creasedafterthediversion ,andpredominantlyclusteredaroundtheEastJuyanLake.In2004,aperma
nentwaterbodyappearedinEastJuyanLake,whileWestJuyanLakedidnotseetheemergenceofper
manentwaterbodies.ThehighestwaterbodyfrequencywasobservedinthevicinityoftheShaomaying-
Langxinshansection ,followedbyEastJuyanLakeanditsperiphery,whiletheEastRiver,WestRiver,
andWestJuyanLakeexhibitedlowerlevels.BeforeEWD,riveroverflowwasprimarilyanaturalprocess
heavilyinfluencedbyhumanactivitiesinthemiddlereaches;however,itshowedasignificantpositive
correlationwithecologicalwatervolumes(P<0.01)afterEWD.Inaddition,downstreamannualevapo
rationandhumanactivitieswerebothsignificantlyandnegativelycorrelatedwithriveroverflowprocesses
(P<0.01).Itisrecommendedtoconstructandrehabilitateecologicalhydraulicengineeringprojectsin
thelowerreachesoftheHeiheRivertoimprovespatialandtemporalimbalanceofriveroverflow,and
thenensurethehealthandsafetyofdownstreamecosystems.
Keywords:riveroverflow;GoogleEarthEngine;waterbodyfrequency;ecologicalwaterdiversion
(EWD);thelowerreachesoftheHeiheRiver
[68]
¸¡.lðå 。!~ĨÁ5Aϱ{%<, #
1 ./01
$¨Ó{X5Aϱð°[N1{ [910] 。
Æ5XY!û
eOã5, &EÁ·÷;。A !Oð5Aϱ{%<Þß$Qé0"É5U
DEÞßç+Æ5ÄÏ{ËACÝpkA, l$Á V [1112] , 5Aϱð+¢d#Ð、 sG:¢C,
Æ5zUC,rUA¿á, %ïMRuiÏ, ôá ðÌÍ{å@Þ。`T1å [11] 、 cíå [12]
ÓÁuT [1] 。Æ5iÏ{Î&øXY! ¢x°0"É5iÏ5AϱðsG:¢{
[2]
a>hg#ß{=jÖY , «XÎ&øNqE9 , C5AºÏ±g¡ð¸~{。,]
'
=Z、 !Ö-%äXÖÛ÷{#ß~Ó, ÖÙ éúÅϱA¿E|{À|w
[3]
h9_¢#ß 。Æ5iÏh²çU{÷Ñ[ c, Ã+ð!£hg¢A¿{¤V, «º1º¢îï
Î&ø{Ú~ZZ¨ [4] 。20 ìa 60 vy A¿é«|]O{gû。8, Îów¨y"
ç, %ÁÆ5QÏeYÈ&RADE, c§a¹ {、 1eefwxA¿cÕ~{>ð, ¢£h²
·k{ADE
Ã, eÆ5iÏÉ5i= Aϱ·»{|}~C,[{¥èÂÔ。
U、 hiA9iË、 Ô¦{õb、 À、 ,, ÒB/Á GEE(GoogleEarthEngine) ´t, ¶·
ÕJ娿ò=jXh=> [5] 。íº?Oli pÅ()h²A¿$ GSW(globalsurfacewa
Ïhg=jXht, re,4@Y!#ß{Qÿ ter ), °èÆ5iÏ 4æABvçU1ä{çU
ZØEh§¨, Ç#56ÖY!a>hg{=jd 1, ¢£Æ5iÏ¢AÍ、 á{h²çU~
(。@Ö_=jXht、 ÐiÏ=j¿{ C5Aϱ{|}~, Î<Æ5iÏ5Aϱ
G[Û«, + 2000 v!"^ýÆ5¢A>ÊÈ+ {
。
A1¨\ç, Æ5AÁ 2002 v 7 { 17 /Ö
2 234()./56
;uT, àÆ5#¡^É(Y¶。=j
tAXzfgOã5UVÀ=j¿Ïñ{Þß 2.1 XY8Z[
üý, ]UViÏ{5AϱÂg¨¿Ö,, %< g 9 Á Æ 5 i Ï (41°30′~ 42°07′N,
{÷ñ4k。8, =jtA§»^ýá, UV 101°03′~101°17′E), áõ±ÞÃzà, ¼v´µá
iÏ5Aϱ{|}~C,
X¥¦=j @ 9.0℃, ¼v´µðW@ 33.60%, ¼v´µ
tA§»^ý4k{¨®。 ËA1@ 37.0mm, ¼v´µT&1^à 2782.3
A·}wefe、 |wñòcåø mm, zf( ËA1/ T&1) DÁ 0.01 [1314] 。%
$, 4@*Í%<5Aϱ{ÞßÑ]。R ÁËA1, iÏ{ADEÞßç+ÁQÄÏ{h²
%<5Aϱ{Þß>ð·×½ð、 A¿ð、 çU。Æ5iÏïMRAB@$, ?i~¡·