Page 201 - 《水资源与水工程学报》2022年第6期
P. 201
! 6# W, 9: v; &Kãqruª./ 1 7
9
middlereachesofthebasinbutlowintheupperandlowerreaches.TheaverageWUEofforestlandwas
relativelyhighamongthevegetationtypes ,andtheaverageWUEofconiferousforestwasthehighest,
2
2
whichwas1.52g/(mm·m );followedbybroadleavedforest,whichwas1.29g/(mm·m ).The
maindrivingfactorsof WUEinthestudyareawereCO,soilmoisture,temperaturevegetationdroughtin
2
dexandvaporpressuredeficit.Comparedwithsinglefactor,theinteractionofmultiplefactorshada
greaterimpactonWUEinthestudyarea,allthetwofactorinteractiondetectionshowedasignificanten
hancementrelationship ,andeachexplanatorypowerwasmorethan60%,amongwhichtheexplanatory
poweroftheinteractionbetweenCO andsoilmoisturewasthehighest(90.3%).Theresearchresults
2
canprovideatechnicalsupportforefficientagriculturalproduction,optimalmanagementofwaterre
sourcesandecologicalrestorationinthestudyarea.
Keywords:vegetationwateruseefficiency(WUE);spatiotemporalpattern;geographicaldetector;
Hurstindex;theManasRiverBasin
u<Ç¿
¾õ)ª^rj±(Theil-Sen
1 ./01
median) ¢£、Mann-kendall(M-K) QX
¤·NduYÿ WUE(wateruseefficiency) ÀP Hurst ±fK WUEMy¾
ÜGk[\æøjNêY CO 2 [1] 。 Ü。`¥&Jn¼%äÞâÄ.X¿FÝJ
WUEÜ\YGk[\ÄN{sP¸§¨0[ ( nN、 ZO)、 e¼O(soilmoisture,SM)、 ZO
[2-3]
$$± , àÜÅ¿À¡é¥Gk[\ÆÇ ¤·!M±(temperaturevegetationdrynessindex,
$$ÕK [4] 。ÁÝ6§¥ WUE&J°Ü TVDI)、 Y N å º ¿ (vaporpressure deficit,
WषON², vK$ñ VPD)、CO K餷± (normalizeddiffer
2
¿.、 CövÎLjJf [4-8] 。 encevegetationindex,NDVI), ¤¢½Y]ÓvÙ
Ò|_°6§duyz.
¥ WUEaq«c ÀËÝ¥ WUE ÆÇ, ãO&J¬;À
&J [9] 。ZHANGf [10] 、 Í?¸üEª·EE¸ M>¯´!"owNQR]du(a'ÀP¥
f [11] u GLASS(globallandsurfacesatellite) Ã"oGk[\lmÄN{s&J¸ëd。
±í MODIS(moderate-resolutionimagingspectro
2 234()./56
radiometer ) ±íC¹:Lno WUEyö£
X¾c; "¥f [12] 、 ÐÌÌf [13] uyz±í& 2.1 |}~
J':L&Jn WUEÏMöOËñò¹: >¯´!"ojàohyBrÆ, VCª×Y
L¡é¢£; =@óf [14] «yz±í( CASA "y(43°04′N~45°58′N,84°40′E~86°40′E), &J
2
4
(Carnegie-Ames-stanfordapproach) ç&J nï*M 3.40×10 km, YÄíÁ, Y£".yÑ,
'¶ÉAè、 nN、 k8¿Z¥ WUEÆÇ 4"LyìÔMhY、 t¶。&JnàÝ
hOìÔâÛ。ÀË&J¬®, :Lno WUE çZ'!Mc\X¿À, ³¿ZM 7.7℃, ³
My¾Ü¡é¢£¿£¾c, ÆÇ WUE Ý nNM 114~200mm, ¹'M 1500~2100
ÆÇhOà:L。ç°&JäÞÆÇ WUE mm, ¿À!K, ¿Z¾¿¾c, nÞ®, ¹'
Ý.X:j, ð®ÆÇÝ¥ WUE é c。&JnÜå%Ȫ4nnÐctw¨
, ¤¤©«°ÝSEu¥íÁGk[\¤ n, NQRduÿ¾. [1,16] , ($NRM.hß
· WUEMy¡éÆÇ。 NËghnnN。&JnN[P$¤·¬ç
å%>¯´!"oâÄ!MnÐÝç“ hY ¯C 1。
- t - ¶” íGk[\, Ür2S 4c*+ 2.2 Z[\]
[15]
wn , NQRÜÃno¶pGëGk;µ §12dydoܱí[\(https://ladsweb.
0åIüÝ。ÝW, ãOÀ>¯´!"oM&J modaps.eosdis.nasa.gov/) ² Ë Z å « & J n
n, 7à 2001-2019 MODIS ±í¤·óá 2001-2019 19 ÝyöÀÿM 500m¤·
Gë
(netprimaryproductivity,NPP) ¹ç'(e ó á G ë
(NPP,MOD17A3)、 ¹ ç ' (ET,
vapotranspiration ,ET) ë²ÅG"o¤· WUE, MOD16A2) ¤·¬ç±í(MCD12Q1)。¥à¤