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Spatial-temporal Variations of NDVI and Their
Relationship with Different Land Use Types in Hexi
Region from 1999 to 2009
Hanchen Duan Tao Wang Xing Wen
Xian Xue Jian Guo
Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences
Lanzhou, China
e-mail: duanhanchen09@163.com
Abstract—Based on the SPOT VEGETATION NDVI data, the
spatial-temporal variations of vegetation cover in Hexi region of
Gansu province were analyzed by using the MVC (Maximum
Value Composites) method and the linear regression analysis
during 1999 to 2009, the NDVI change trends and characteristics
of different land use types were extracted. According to the
results, during the last 11 years, the vegetation cover showed an
increasing trend in the overall Hexi region with the rate of
3.70%/10a. The improved area and degraded area account for
24.37% and 3.80% of the total area respectively, vegetation
improved region is greater than the degraded region significantly.
The vegetation cover has obviously increased in the oasis
agriculture region, however, the degraded area of vegetation
cover are mainly distributed in the southeastern high altitude
mountainous area. Viewed from the land use types, in addition to
the NDVI of forest and high coverage grassland have declined,
other types have increased.
Keywords: Hexi region; SPOT-VGT NDVI; vegetation cover;
spatial-temporal variations
I. ᓩ㿔
ỡ㹿ഄ⧗㋏㒳Ёᡂⓨⴔ䞡㽕ⱘ㾦㡆ˈỡ㹿ᕅડഄ⇨㋏
㒳ⱘ㛑䞣ᑇ㸵ˈ⇨ǃ∈᭛⫳࣪ᕾ⦃Ё䍋ⴔ䞡㽕ⱘ
⫼ˈᰃ⇨Ҏ᭛㋴ᇍ⦃๗ᕅડⱘᬣᛳᣛ[1] DŽỡ㹿
Ў⫳ᗕ㋏㒳ⱘЏ㽕㒘៤䚼ߚˈᰃ⫳ᗕ㋏㒳ᄬⱘ⸔ˈг
ᰃ䖲ೳຸǃ⇨∈ߚⱘ㞾✊Ā㒑ᏺāˈܼ⧗ব࣪ⷨお
Ё䍋ⴔĀᣛ⼎఼āⱘ⫼[2]DŽỡ㹿ᰃ㞾✊⫳ᗕ㋏㒳Ё᳔⌏
䎗ⱘᄤˈ᳝ᯢᰒⱘᑈ䰙ᄷ㡖ব࣪⡍ᕕˈ݊ࡼᗕব࣪
ᇍܼ⧗㛑䞣ᕾ⦃⠽䋼ᕾ⦃᳝䞡㽕ⱘᕅડˈᶤ⾡ᑺ
Ϟҷ㸼ⴔೳഄ㽚Ⲫⱘࡼᗕব࣪[3,4]DŽℸˈỡ㹿㽚Ⲫব࣪ⱘ
ⷨおܼ⧗ব࣪ⷨおЁ᳝䞡㽕ⱘᛣНDŽ
ᴀ᭛䞛⫼ 1999-2009 ᑈSPOT VEGETATION ⱘNDVI
᭄䲚˄S10˅Ў᭄⑤ˈ߽⫼ GIS ぎ䯈ߚᵤᡔᴃˈҢ
ᯊ䯈ぎ䯈Ϟߚᵤњ 11 ᑈᴹ⊇㽓ഄỡ㹿㽚Ⲫⱘぎ䯈ߚ
Ꮧব࣪䍟ˈᑊ㽓࣫ഄ⇨㞾 1986 ᑈ䍋⬅ᱪᑆᱪ
䕀ൟ[5]ǃݰϮ⌏ࡼǃ⫳ᗕᓎ䆒ㄝҎ㉏⌏ࡼϡᮁᔎⱘ㚠
᱃ϟˈ䖯ϔℹ䅼њϡৠೳഄ߽⫼㉏ൟϞ NDVI ⱘব࣪䍟
DŽ
II. ᭄Ϣᮍ⊩
A.
ⷨおὖމ
⊇㽓䍄ᒞԡѢ⫬㙗ⳕ㽓䚼ˈҟѢ䴦㮣催ݙ㩭স催
П䯈ˈϰ䍋Р䵬ኁˈ㽓㟇⫬ᮄѸ⬠໘᯳᯳ኵˈ᳝⼕䖲ቅ
Ϣ䴦⍋ⳕⳌ䚏ˈ࣫Ϣݙ㩭সⳌ䚏ˈԡѢ࣫㒀 36°46ƍ~ 42°47ƍˈ
ϰ㒣 92°44ƍ~ 104°15ƍ˄ 1˅DŽϰ㽓ᓊԌ㑺 1000kmˈ࣫
ᆑ᭄݀䞠㟇᭄ⱒ݀䞠ˈᘏ䴶⿃䖒 29.8 ϛkm2DŽ⊇㽓䍄ᒞ
Ўൟⱘᑆᯅˈ݊Ё䚼Ўᑇ⫳ᗕˈሲѢ⏽ᏺᑆᯅ㤦
⓴ǃ㤦⓴⇨ˈᴀܝ⛁䌘⑤Єᆠǃ⇨⏽催ǃᑈ䕗Ꮒ
[6]DŽҢ䍄ᒞⱘϰ㽓࣫⇨Ꮒᓖᕜˈ䰡∈⬅ϰ䚼ⱘ
150~250mm 䰡ࠄ㽓࣫䚼ⱘ 50mm ҹϟˈ㪌থҢ 2000mm
㟇3500mm ҹϞˈᑈഛ⇨⏽Ў 5~10ćˈ䰚ᗻ⇨ᰒ㨫˗
ܝ✻ܙ䎇ˈ᮹✻ᯊ䯈 2800~3300h[7,8]DŽ⬅Ѣ䰡䲼⿔ᇥˈ∈
⛁ᴵӊߚᏗϡഛˈࡴПϹ䝋ⱘ⫳ᗕᴵӊˈՓᕫ䆹ඳ⫳ᗕ
⦃๗ᵕ݊㛚ᔅDŽℸˈ߽⫼ỡ㹿ᣛ᭄ NDVI ⷨお⊇㽓ഄ
ⱘỡ㹿ব࣪⡍ᕕϢ䍟ˈ᳝䞡㽕ⱘᛣНDŽ
1 ⷨおὖމ
B.
᭄ᴹ⑤ঞ乘໘⧚
ᴀⷨお߽⫼↨߽ᯊԯ㦅㡦ᡔᴃⷨお᠔ᦤկⱘ㽚ⲪϰѮ
ⱘVGT-S10 ᭄䲚ˈᯊ䯈䎼ᑺЎ 1999 ᑈ1᳜㟇 2009 ᑈ
12 ᳜ˈぎ䯈ߚ䕼⥛Ў 1km×1kmˈᘏ݅ 396 ᱃ڣDŽ䆹᭄
䲚⬅↨߽ᯊԯ㦅㡦ᡔᴃⷨお᠔ VEGETATION ᕅڣ໘⧚
Ёᖗ㒣䕤ᇘᅮǃ⇨ℷǃѥẔ⌟ԩℷㄝ໘⧚ˈ
⫳៤䗤᮹ 1km ߚ䕼⥛ⱘܼ⧗㽚Ⲫ᭄ˈ᳔ৢ⫳៤ 10d ᳔
䞥乍Ⳃ
˖ᆊ䞡⚍⸔ⷨおথሩ䅵ߦ乍Ⳃ˄973˅(2009CB421308))
1590
978-1-4244-9171-1/11/$26.00 ©2011 IEEE
࣪ড়៤ⱘ NDVI ᭄DŽϢ NOAA/AVHRR Ⳍ↨ˈSPOT-4
VEGETATION Ӵᛳ఼᳝㑶ܝ⊶↉ᇍ㓓㋴ᬊᬣᛳǃ䖥
㑶⊶↉ࠨ䰸њᔎ∈≑ᬊᏺぎ䯈ߚ䕼⥛催ㄝӬˈ
㗠ࡴ䗖ᅰѢỡ㹿ব࣪ⲥ⌟ⷨお[9]DŽ⬅Ѣ䆹᭄䲚㽚Ⲫᭈ
ϾϰѮഄˈϨࣙ⊶↉ NDVIˈЎњᕫࠄⷨおඳ
ⱘNDVI ᭄ˈ߽⫼䘹ᛳڣ໘⧚䕃ӊ ERDAS 9.1 ഄ⧚
ֵᙃ㋏㒳䕃ӊ ARCGIS 9.2ˈᇍ SPOT-VGT NDVI ᕅڣ䖯㸠
໘⧚ˈᑊҹ⬠ᅮདⱘ⊇㽓䍄ᒞ䖍⬠ᦤপⷨおݙⱘ NDVIDŽ
㒣䖛ྟℷৢড়៤ⱘ NDVI ᭄ҟѢ-1~1 П䯈ˈЎ
њᄬټᮍ֓ˈᇚ-1~-0.1 ⱘؐ䆒㕂Ў-0. 1 ˈݡ䗮䖛݀ᓣ
DN=(NDVI+0.1)/0.004 䕀࣪Ў 0~250 ⱘDN ؐDŽℸˈ
᭄乘໘⧚䖛Ёˈᖙ乏ᇚ DN ؐ䗮䖛݀ᓣ
NDVI=0.004*DN-0.1 䕀ᤶЎⳳᅲⱘ NDVI ؐDŽ
C.
ⷨおᮍ⊩
1˅NDVI ᳔࣪ড়៤⊩
MVC (Maximum Value Composites) ᰃⳂࠡ䰙Ϟ᳔䗮
⫼ⱘ᳔࣪ড়៤⊩[10]ˈᇚ↣᳜Ёϝᯀⱘ᭄প᳔ؐˈ
⫼䖭Ͼ᳔ؐЎ䆹᳜ⱘ NDVI ؐˈ䖭ḋৃҹ⍜䰸⇨ǃ
ѥ䰇催ᑺ㾦ⱘ䚼ߚᑆᡄDŽ݊䅵ㅫ݀ᓣЎ˖
NDVIi = Max (NDVIj)
݊ЁˈNDVIiᰃ i᳜ⱘ NDVI ؐˈNDVIjᰃ i᳜ j
ᯀⱘ NDVI ؐDŽ⬅Ѣᑈ᳔࣪ NDVI ৃҹ䕗དⱘডᑈᑺ
ỡ㹿䭓᳔དᄷ㡖ഄ㸼ⱘỡ㹿㽚Ⲫᑺˈℸᴀⷨおᇚ䆹ᮍ
⊩ᓊԌњϔϟˈᇚܼᑈ 12 Ͼ᳜ⱘ䘹ᛳ᭄ᣝ᳔ؐড়៤ᕫ
ࠄᑈⱘ᳔ NDVIˈᑊҹℸᴹҷ㸼ỡ㹿⫳䭓᳔ᯎⲯᯊᳳ
ⱘNDVI ᳔ؐ[4]DŽ
2˅䍟ߚᵤ
䍟ߚᵤ⊩ৃҹ᳝ᬜⱘᢳ↣ϾḐⱘব࣪䍟[11]ˈЎ
њ䖯ϔℹⷨお⊇㽓ഄỡ㹿㽚Ⲫⱘࡼᗕব࣪䱣ᯊ䯈ব࣪ⱘ
ᑺᐙᑺˈᴀⷨおՓ⫼ϔܗ㒓ᗻಲᔦߚᵤᢳ↣Ͼ䈵ܗ
䖛এ 11 ᑈⱘব࣪䍟DŽ݊䅵ㅫ݀ᓣЎ˖
111
22
11
Ĭ
()
nnn
ii
iii
slope nn
ii
niNDVI iNDVI
ni i
qq
q
ᓣЁˈn㸼⼎ᢳⱘᯊ䯈ᑣ߫䭓ᑺ˄n= 11˅ˈব䞣 iᰃ
ᯊ䯈ᑣ߫ⱘᑣোˈNDVIiᰃ iᑈⱘ NDVI ᳔ؐDŽ݊ব
࣪䍟ডњⷨおᯊ↉ݙᑈ NDVI ⱘব࣪䍟ˈᶤ⚍ⱘ䍟
㒓ᰃ䆹⚍ 11 ᑈݙ᳔࣪ NDVI ؐ㒣䖛ϔܗ㒓ᗻಲᔦᢳ
ߎᴹⱘϔϾᘏⱘব࣪䍟DŽ⫼ Ĭslope 㸼⼎ব࣪᳆㒓ⱘ᭰⥛ˈ
ᔧĬslope > 0 ᯊˈ߭䇈ᯢ NDVI ⱘব࣪䍟ᰃࡴⱘˈᔧ
Ĭslope < 0 ᯊˈ߭䇈ᯢ NDVI ⱘব࣪䍟ᰃޣᇥⱘDŽ
III. 㒧ᵰϢ䅼䆎
A. NDVI
ⱘᑈ䰙ব࣪
䗮䖛䅵ㅫᕫࠄ⊇㽓䍄ᒞഄ 1999~2009 ᑈᑈ᳔ NDVI
ⱘব࣪ᚙމ˄བ 2˅DŽҢЁৃҹⳟߎˈ⊇㽓ഄỡ㹿
NDVI ব࣪ᭈԧϞࡴ䍟ˈࡴⱘ䗳⥛Ў 3.70%/10aˈ
ᑈ᳔ NDVI ϢᑈӑП䯈ⱘⳌ݇㋏᭄催䖒 0.77˄P<0.01˅ˈ
䖭ϢЁ㽓࣫ഄỡ㹿ব࣪䍟ϔ㟈[12]DŽ䰸 1999 ᑈᑈ᳔
࣪ NDVI ᇣѢ 0.14 ˈ݊Ҫᑈⱘ NDVI ؐഛ 0.14
ҹϞˈ݊Ё NDVI ᳔ؐߎ⦄ 2008 ᑈˈ催䖒 0.188DŽҢ
NDVI ᑈ䰙ব࣪ᘏԧ䍟ᴹⳟ˖1999~2007 ᑈᑈ᳔࣪
NDVI 㓧᜶ࡴⱘ䍟ˈ݊ࡴ䗳⥛Ў 1.10%/10aˈ2007
ᑈҹৢࡴᐙᑺᗹ࠻ϞDŽ䖥 40~50 ᑈᴹˈ៥㽓࣫ഄ
䰡∈䞣ᯢᰒࡴⱘ䍟[13,14]DŽ⊇㽓㓓⌆ⱘỡ㹿㽚Ⲫব࣪
䰸ফᔧഄⱘ⇨⏽ǃ䰡∈ᕅડˈ݊∈䌘⑤Џ㽕ᴹ⑤Ѣ⼕䖲
ቅ㵡࣪ⱘބ䲾[15]DŽ䱣ⴔܼ⧗⇨বᱪˈ㞾 20 Ϫ㑾 50 ᑈҷ
ҹᴹ⼕䖲ቅ࣫വ⇨⏽ᘏԧϞ⊶⢊Ϟ䍟ˊ䖯ܹ 90 ᑈҷ
ҹৢࡴ䗳Ϟˈބ䲾⍜㵡䞣ࡴˈৠᯊ䰡∈䞣гࡴ䍟
[16]DŽℸˈ䖥ᑈᴹ⊇㽓ഄỡ㹿㽚Ⲫᯢᰒࡴ䍟DŽ
2 ⷨおᑈ᳔࣪ NDVI ব࣪䍟
3⊇㽓ഄᑈ᳔ NDVI ぎ䯈ߚᏗ
B.
ᑈ᳔
NDVI
ⱘぎ䯈ߚᏗ⡍ᕕ
3Ў⊇㽓ഄ 1999~2009 ᑈᑈ᳔ NDVI ぎ䯈ߚᏗ
ˈডњ⊇㽓ഄ 11 ᑈᴹỡ㹿㽚Ⲫⱘᴀ⡍ᕕDŽҢЁ
ৃҹⳟߎˈϰ䚼ഄⱘỡ㹿⢊މᯢᰒ㽕↨㽓䚼དˈᑊϨҢ
ϰ㽓䗤⏤䗦ޣⱘ䍟DŽ⬅Ѣফ⼕䖲ቅބ䲾㵡∈ⱘ㸹㒭ˈ
⼕䖲ቅ࣫呧䚼ߚ㓓⌆ඳᑈ᳔ NDVI ؐഛ 0.60 ҹ
Ϟˈ↨䕗᳝ҷ㸼ᗻⱘϾ NDVI 催ؐൟඳЎ㙗Ꮂǃ
Ј⋑ওǃ⫬Ꮂǃ⇥Фǃ∌ᯠޝᎲഫ㓓⌆DŽ݊ᰃ
ᬺ✠ǃ⪰Ꮂǃ⥝䮼ǃ䞥ศǃ⇥ࢸㄝϾ㓓⌆ඳˈ݊ NDVI
ؐഛ 0.30 ҹϞDŽ⬅Ѣ䖭ѯ㓓⌆Ў⊇㽓ഄЏ㽕ⱘݰϮ⫳
ѻഄˈℸ݊ NDVI ؐᯢᰒأ催ˈ㗠ϰ䚼㓓⌆ೈҹঞ
⊇㽓ഄ㽓࣫䚼㽓䚼䚼ߚඳ⬅Ѣ䰡∈⿔ᇥˈ㔎ᇥ
∈⑤㸹㒭Ϩ㪌থ䞣ˈỡ㹿㽚Ⲫᑺᵕ䕗Ԣˈ݊ NDVI ؐ
0.05~0.30 П䯈DŽNDVI ؐᇣѢ 0.05 ⱘඳߚᏗᵕッ
1591
ᑆᯅⱘ≭⓴ǃៜຕㄝ䲒ҹ㹿߽⫼ᓔথⱘഄDŽ
C.
ᑈ᳔
NDVI
ⱘぎ䯈ব࣪ߚᵤ
߽⫼ϔܗ㒓ᗻಲᔦߚᵤ⊩ᢳњ⊇㽓ഄ 1999~2009
ᑈⱘ NDVI ব࣪䍟˄ 4˅ˈᑊ ḍ 㸼 1Ё㒳䅵᭄ⱘব
࣪ᇚ NDVI ⱘব࣪䍟ߚЎ 7Ͼㄝ㑻˖ᯢᰒ䗔࣪ǃЁᑺ䗔
࣪ǃ䕏ᑺ䗔࣪ǃᴀϡবǃ䕏ᑺᬍǃЁᑺᬍᯢᰒᬍ
DŽ㓐ড় 4㸼 1ৃҹⳟߎˈ⊇㽓ഄ 11 ᑈᴹỡ㹿㽚Ⲫ
ᭈԧϞࡴⱘ䍟ˈỡ㹿ᬍඳⱘ䴶⿃Ў 72764km2ˈ
ᘏ䴶⿃ⱘ 24.37%ˈᯢᰒᬍⱘඳЏ㽕䲚Ё⊇㽓ഄ
Ͼ㓓⌆ೈˈ䕏ᑺЁᑺᬍⱘඳЏ㽕ߚᏗ㙗࣫㩭
সᮣ㞾⊏ওⱘ䚼ߚഄ㙗㺩ᮣ㞾⊏ওⱘ࣫䚼㽓
䚼DŽỡ㹿䗔࣪ⱘ䴶⿃Ў 11360km2ˈᘏ䴶⿃ⱘ 3.80%ˈЏ
㽕ߚᏗ⼱㮣ᮣ㞾⊏ওⱘϰ䚼স⌾ওⱘ䚼ˈ݊
㙗㺩ᮣ㞾⊏ওϰ䚼ҹঞቅЍǃ⇥Ф㙗㺩ᮣ㞾
⊏ওϰ䚼ߚⱘ㽓䚼ഄѸ⬠໘᳝䕏ᑺ䗔࣪DŽ݊Ҫඳ
ᴀ≵᳝ব࣪ˈᘏ䴶⿃ⱘ 71.82%DŽᘏԧ㗠㿔ˈỡ㹿ᬍⱘ
ඳᯢᰒѢỡ㹿䗔࣪ⱘඳˈ⊇㽓ഄ 11 ᑈᴹỡ㹿ᭈԧ
ࡴⱘ䍟DŽ
4 1999~2009 ᑈ⊇㽓ഄᑈ᳔ NDVI ࡼᗕব࣪䍟ߚᏗ
㸼1 1999~2009 ᑈ᳔࣪ NDVI ব࣪䍟㒳䅵
NDVI ব࣪
䍟 ব࣪ㄝ㑻 䴶⿃/km2 䴶⿃
ⱒߚ↨/%
-0.015 ᯢᰒ䗔࣪ 1109 0.37
-0.015 ~ -0.01 Ёᑺ䗔࣪ 2557 0.86
-0.01 ~ -0.005 䕏ᑺ䗔࣪ 7694 2.58
-0.005 ~ 0.005 ᴀϡব 214444 71.82
0.005 ~ 0.01 䕏ᑺᬍ 50870 17.04
0.01 ~ 0.015 Ёᑺᬍ 14466 4.85
0.015 ᯢᰒᬍ 7428 2.49
D.
ϡৠೳഄ߽⫼㉏ൟⱘỡ㹿ব࣪䍟
ϡৠೳഄ߽⫼㉏ൟⱘỡ㹿ফࠄϡৠᑺⱘ㞾✊㋴
ҎЎ㋴ᕅડ,݊ỡ㹿㽚Ⲫгህᄬϡৠⱘᯊぎবᓖ⡍ᕕ
[17]DŽ㞾✊ỡ㹿ব࣪ᑺϞডњ⇨ব࣪ᇍỡ㹿ⱘᕅ
ડˈ㗠ҎᎹỡ㹿ব࣪ԧ⦄ⱘᰃҎ㉏⌏ࡼⱘ⫼[18]DŽ
ℸˈᴀ᭛߽⫼ 2000 ᑈ1:10 ϛೳഄ߽⫼᭄ᑧˈҹ㒓ᗻಲ
ᔦ㋏᭄ΊșslopeΊ>0.005 Ў NDVI ব࣪ⱘ߸߿ޚˈ䖯㸠
ϡৠೳഄ߽⫼㉏ൟỡ㹿㽚㹿ব࣪㾘ᕟⷨおDŽЎњ֓Ѣ㒳䅵
ߚᵤˈ䗝পⷨおᘏ䴶⿃ 96%ⱘ15 ⾡ೳഄ߽⫼㉏ൟDŽ
Ң㸼 2Ёⱘ㒳䅵㒧ᵰৃҹⳟߎˈ⊇㽓ഄỡ㹿㽚Ⲫҹᬍ
ЎЏˈ䰸ᵫഄǃϬ䱉ᯅഄ催㽚Ⲫᑺ㤝ഄ䗔࣪䴶⿃Ѣ
ᬍ䴶⿃ˈ݊Ҫೳഄ߽⫼㉏ൟϞⱘỡ㹿㽚Ⲫഛ᳝᠔ᬍDŽ
ᬍ↨䞡 24.37%䖰Ѣ䗔࣪↨䞡 3.80%ˈ݊Ёቅᯅഄǃ
ᑇᯅഄᓎ䆒⫼ഄỡ㹿 NDVI ᐙ↨䕗ᰒ㨫ˈ䖭Џ㽕ᰃ
⬅Ѣ䖥ᑈᴹݰϮ⫳ѻ∈ᑇⱘᦤ催Ҏ㉏⌏ࡼ㣗ೈⱘᠽ᠔
䗴៤ⱘDŽ催㽚Ⲫᑺ㤝ഄᵫഄỡ㹿 NDVI ⱘޣᇣЏ㽕ᰃ⬅
ѢⒹⷡⒹӤ䖛ᑺᬒ⠻᠔ᇐ㟈ⱘˈ㗠⬅Ѣ䖥ᑈᴹ䗔㗩䖬ᵫ
䖬㤝ᬓㄪⱘᅲᮑҹঞᇍ㤝ഄⱘᇕ㚆ֱᡸˈՓᕫ≭ഄៜຕ
ඳⱘỡ㹿 NDVI ᕫࠄᯢᰒᬍDŽℸˈ䱣ⴔܼ⧗⇨ব
ᱪˈ⏽ᑺϞᇐ㟈ބᎱ㵡࣪ˈҹބᎱ㵡∈㸹㒭ЎЏⱘݙ䰚
⊇ᕘ⌕䞣ࡴˈՓϟ␌ഄᴹ∈䞣ˈҢ㗠Փϟ␌㤦⓴
ഄⱘỡ㹿ᕫࠄᘶDŽ
㸼2 ϡৠೳഄ߽⫼㉏ൟϞỡ㹿ব࣪䍟㒳䅵㸼
ೳഄ߽⫼
㉏ൟ
ᘏ䴶⿃
/km2
ᬍ䴶
⿃/km2
䗔࣪䴶
⿃/km2
ᬍ↨
䞡/%
䗔࣪↨
䞡/%
ᵫഄ 7202 985 2104 13.68 29.21
ቅᯅഄ 79 40 4 50.63 5.06
Ϭ䱉ᯅഄ 1933 180 785 9.31 40.61
ᑇᯅഄ 16079 8127 1271 50.54 7.90
催㽚Ⲫᑺ
㤝ഄ 7133 1485 1858 20.82 26.05
Ё㽚Ⲫᑺ
㤝ഄ 15677 7385 1945 47.11 12.41
Ԣ㽚Ⲫᑺ
㤝ഄ 42826 15622 1105 36.48 2.58
∈ඳ 2590 1031 462 39.79 17.83
ᓎ䆒⫼ഄ 1278 680 112 53.25 8.77
≭ഄ 35832 4310 93 12.03 0.26
ៜຕ 83287 11329 342 13.60 0.41
Ⲥ⺅ഄ 10269 3852 49 37.51 0.48
⊐⋑ഄ 658 235 27 35.71 4.10
㻌ೳഄ 4379 1057 30 24.14 0.69
㻌ች⸒
ഄ 58383 11273 562 19.31 0.96
݊Ҫ 10962 5173 612 47.19 5.58
ᘏ䅵 298567 72764 11361 24.37 3.80
IV. 㒧䆎
ᴀ᭛߽⫼ SPOT VEGETATION NDVI ᭄ߚᵤњ⊇㽓
ഄ 1999~2009 ᑈⱘỡ㹿㽚Ⲫᯊぎব࣪⡍ᕕˈᑊᇍϡৠೳ
ഄ߽⫼㉏ൟϞⱘỡ㹿ব࣪䍟䖯㸠ߚᵤˈᕫࠄҹϟЏ㽕㒧
䆎˖
˄1˅䗮䖛ᇍ⫬㙗⊇㽓ഄ 11 ᑈᴹⱘỡ㹿㽚Ⲫ䖯㸠ⲥ⌟
ৃҹⳟߎˈ⊇㽓ഄỡ㹿 NDVI ᭈԧࡴⱘ䍟ˈࡴ
ⱘ䗳⥛Ў 3.70%/10aDŽ2007 ᑈҹࠡ㓧᜶ࡴⱘ䍟ˈ2007
ᑈҹৢᰒ㨫ࡴ䍟DŽ
˄2˅Ңỡ㹿 NDVI ⱘᄷ㡖ব࣪ᴹⳟˈNDVI ᳝ᯢᰒ
ⱘᄷ㡖ব࣪㾘ᕟˈᄷ NDVI ᳔催ˈހᄷ NDVI ᳔ԢDŽ
ᄷ⾟ᄷ NDVI ⊶ࡼᐙᑺ䕗ˈ㗠ᄷހᄷⳌᇍ↨䕗〇
ᅮDŽ
˄3˅ᭈϾ⊇㽓ഄϰ䚼ỡ㹿㽚Ⲫ⢊މᯢᰒདѢ㽓䚼ˈ
1592
ỡ㹿ᣛ᭄䕗催ⱘඳЏ㽕䲚ЁϾ㓓⌆ඳˈ㗠㓓⌆
ೈⱘ≭⓴ៜຕㄝ᮴ỡ㹿ᇥỡ㹿㽚Ⲫˈỡ㹿ᣛ᭄ᵕԢDŽ
˄4˅ỡ㹿ᬍⱘ䴶⿃䖰䖰Ѣỡ㹿䗔࣪ⱘ䴶⿃ˈỡ㹿
ᬍⱘඳЏ㽕ߚᏗ㓓⌆ೈˈ㗠ỡ㹿ᯢᰒ䗔࣪ⱘ
ඳЏ㽕ߚᏗ⼱㮣ᮣ㞾⊏ওⱘϰ䚼স⌾ওⱘ䚼DŽ
˄5˅Ңỡ㹿㉏ൟᴹⳟˈ⬅ѢҎ㉏ⱘϡড়⧚߽⫼ᇐ㟈ᵫ
ഄ催㽚Ⲫᑺ㤝ഄ NDVI ᳝᠔ϟ䰡ˈ㗠ফ⾡ֱᡸᬓㄪঞ
Ꮉⱘᅲᮑˈ≭⓴ៜຕഄⱘỡ㹿 NDVI ഛ᳝᠔ᦤ催DŽ
ỡ㹿ব࣪ⲥ⌟ᰃϔϾ䭓ᳳⱘࡼᗕব࣪䖛ˈ߽⫼䘹ᛳ
↉䖯㸠ሎᑺǃ䭓ᯊ䯈ᑣ߫ⱘỡ㹿ব࣪ⲥ⌟ˈᇍҹৢⱘ
≭⓴࣪䰆⊏⫳ᗕ⦃๗ᬍᎹ䛑᳝䴲ᐌ䞡㽕ⱘ⧚䆎ᣛ
ᇐᛣНDŽ
㟈䇶
ᛳ䇶ᆊ䞡⚍⸔ⷨおথሩ䅵ߦ乍Ⳃ˄&%˅
Āᑆᯅ㓓⌆࣪ǃ㤦⓴࣪䖛ঞ݊ᇍҎ㉏⌏ࡼǃ⇨ব࣪
ⱘડᑨϢ䇗āᇍᴀⷨおⱘ䌘ࡽˈᑊᛳ䇶 ,((( 䘹ᛳˈ⦃๗
ϢѸ䗮䖤䕧Ꮉ䰙Ӯ䆂㒘ྨӮᦤկℸѸ⌕ᑇৄDŽ
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