1、第 33卷第 1期2010年 2月测绘与空间地理信息GEOMATICS植被覆盖;归一化植被指数;动态变化;线形回归 m s | : TP79; X87null null null D S M : Anull null null c I | : 1672- 5867(2010) 01- 0164- 03Research on the Vegetation Coverage Changes of ChinaBased on SPOT- 4/VEGETATION DataZHAOHan- qing( Jinlin Institute ofG eom atics Engineering, Changc
2、hun 130051, China)Abstract: Vegetation coverage change are seriously affected energy cycle andmaterial cycleof theworld, so study on vegetation covernullage change is important toglobalchange research. This paperdescribed overall situation ofvegetation coverage change inChina in renullcently 8 years
3、, and analized the status and interannualvariations of vegetation coverage during 1998 to2005 by taking correlation coefnullficient of line regression and salient features as indexes based on SPOT4- VEGETATION/NDVI time series data.K ey words: remote sensing; vegetation coverage; normalized vegetati
4、on index; dynam ic changes; line regression0null null r /r M o M = B 1b $ r K 1 s , r av s 1 1 null g 2, M o? 1 Y ,y 7 , $ M V “ r M , $ M o M 1 i l b SPOT- 4/VEGETATION3 NDVI “(S10)T $ M , k V 8 U S $ M b - $ ,5 8 M H W M NDVI( K v NDVI )( # M d 9 S $ # M 8 , B M NDVI L B , B M 1 “ # A V $ M b1null
5、 Z E1. 1null ) * SPOT- 4z VEGETAnullTION. | ,V 1 H VITO _ / , 1998 M 4 2006 M 3 S u Kv NDVI “ (S10) ,m bW s O q 1 km!1 km,g Z T Plate Carreeb1400 S 8 u m S E $ “ d _ 4 b 1 , ) T / + T :1) * X V + , N 1 | g F V b P m ) q * F g , H S O g P * g B ,i | E bnull null 2) / T :NDVI=DN !0. 004- 0. 1| * DN (
6、digitalnumber, S ) NDVI , V u NDVI m b3) m ) q ? ,g S u NDnullVI b4) NDVI Y V S = Y K v E(MVC) , Z E V B h “ v a s b 9 T :NDVIi = M ax(NDVIij )NDVIi i NDVI , NDVIij i j NDnullVI , P NDVI L L = Q V $ b5) M K v NDVI V z Q M $ K z 1 V $ ,y N | M 12 * K v M K v NDVI, 3 V M $ 3 K 9 H NDVI K v , NDnullVI
7、h “ u 1 M $ M Y b T / :NDVIi = M ax(NDVIij )null null NDVIi i M NDVI , NDVIij i M j NDVI 1. 2null Z E 1 1998 M S $ 3 $ bW s s ( E d 9 u NDVI( M ( NDVI), H W = S u M K v NDVI NDVI ( , : u NDVI( u M ( NDVI), Q M S u $ , N Q S $ 9 8 f b B S $ M H W M , # t M bW V C s , B H W s Z E - PearsonL B ) Z E b
8、9 T :R = n# NDVI Y- # NDVI # Yn# NDVI2 - ( # NDVI)2 n# Y2 - ( # Y)2R=L M 1 “ , nV U , n= 8, NDVI M NDVIm NDVI , Y M M z b B M K v NDVI M z B s , L M 1 “ R, N Q $ M M t # M b N , ! : Rl 0 u , $ h t ; Rv 0u ,5 $ 9 F t ; T R v 0. 05 A (P 0. 05),5 $ h 9 FA b2null T ) 2. 1null $ b W s s 1)V 9 8 A , S $ C
9、 V 2_ h t ,V C , # _ a M V b S u ,v l A u s L K , S $ z , C v al 4 u a a a 2 $ ; 7 s L , $ , , $ , S L = $ f b s “ V C v d 1 $ s Y ,9 C aZd s v y S $ s T b2) S $ bW s C - 2 _ % a 2 - _ 9 ? p , B bW s vd 1 s b 1 u , j B $ Y , # K v h “ 1 Y , $ $ , 9 8 C 2 s = , = = , = = M ;7 = d u , v 8 # Y , $ 9 %
10、B b3) $ z u , C B t $ u , t u s B t 6 ? r u , a , t u g V B “ bN , Z L , $ 9 b2. 2null NDVI H W M s $ M = M o M a u M # r / 8 Y , $ H W M bW s s bm 1 u = 8 M W $ M = M m , u NDVI M = M 7 , u $ 9 8 V C 5 , 9 F , O 9 F q ( )v h q ( ), H = , S $ 9 8 6 ,9 S $ 9 bV % ,V C $ NDVI 1998 2001 M M S 0null493
11、0. 471, O M h t ,7 2002 2003M B y 9 , M S 0. 484 0. 492, O2002 M 9 q 1 v 2003 M 9 q , 2004 MNDVI , 0. 491, 2005 M B A 9 F ,r 0. 5b S $ M S M V s bV 1998 2001 M W S 9 8 V C M ,7 2001 M , S A Z _ M , M S $ M = M t B z d b V S $ 9 8 f ? , s S $ M = M , 1998 2005 M W B M Kv NDVI L B 7 $ M t b V ? C , W
12、, S v s u M K v NDVI 9F t , 9 F u S r 56%, A 9 F u S S r 13%; 7 A h u165第 1期 u q : SPOT- 4/VEGETATION S $ M S r 9%, O h u “ u bm 1null M ( NDVI M = M mFig. 1null V egetation coverage change ofnull null null null annual m ean NDVI2. 3null NDVI M = M b W s s s Y V s V ? C , 1998 2005 M W , S $ bW s i
13、/ + + :V 8 A , S $ M t , A s 3 M u ,V 2 Z _ = d , $ M V A 9 F _ A h M b $ bW s % % 2 % a 2 % % 9 B bV u s A ,A 9 F u 2 Z u A a A u , s 1 a j # g V Y , $ M = M v , $ B u 9 8 A 9 F t , a u # u , B t 6 ? Z y u , a , B t 8 g # s ) g H , $ C A h t b7 = d u , a , = l u u , = d , l a C a 3 O B , $ 3 i H q
14、0 ,F r Y , V C B u $ NDVI A h t b B u “ , $ 3 9 j b A 9 F A h u W W u , = a u a * , aa Z a + a 2 A _ l u , $ V C - M , B u $ M t O , $ h $ 9 F u B , V ? B u a B “ bV $ u A , $ M t “ b 1 u , A a A , $ B V C 9 F t , u , VC v d l a , $ V C h t b $ M t 1 u = V C i 2 _ s , s $ * “ B ? p ,7 _ % H s b A 9
15、F $ u “ j ? r u , a a Z Z u b u , $ M C _ % a 2 _ 9 ? p M , M V 5 9 F h , 9 F b3null M * S $ bW s ,i $ M = M t , / + Z : H W 1 kms O q SPOT - 4/VEGETATION ,Y V M K v NDVI d 9 M ( Q S $ bW s ,# M= M + ; PearsonL B M 1“ # A $ bW M s S ,s S $ 8 M M f ,= s T S $ L = f # M + , SPOT- 4/VEGETATION S $ V b
16、H W = , S $ 9 8 C 9 F t b NDVI 9 F t u S r 56%, 7 A 9 F u S S r 13%bNDVIM bW s v , Z # j Tu $ 9 F A ,7 u $ C A h t b W , l A u= s L , $ 9 F h , B u $ 9 b S $ 6 ? Z y u , a , # 8 g H ,V C A h t , t g V B “ b $ M t “ b 1 u , $ B V C 9 F t ; u , $ M C _ % a 2 _ 9 M ? p b I D : 1null U , b S ,f ) , . $
17、# Z E Z J. j S / v , 2006, 34( 9): 163- 170. 2null , i ,R .* M. :S . 1998. 3null S * , , i h , . SPOT/4- VEGETATION S u r m J.* , 2003, 7( 3): 214- 321.I : 166 null null null null null null null null null null null null null null 测绘与空间地理信息null null null null null null null null null null null null null null null null 2010年
