NDVI Ì % » rs ; M h z » Ý ë ï v ¬ t S Z ô ü r ó ^ ú ü ¨ q f w U ÂNDVI Ì % » r s ; M h z » Ý ë ï v ¬ t S Z ô ü r ó ^ ú ü ¨ q f w U Â è Ì∗ ~ > ¤ a Ï

NDVI

∗

∗

NDVI

1 1

MODIS/Terra NDVI 250m NDVI

NDVI, MODIS Mae Wang basin

1.

Koster et al.,2004

GSWP2 (the 2nd Global Soil Wetness

Project: Dirmeyer et al.,2002)

Yorozu et al.(2005)

SiBUC (Simple Biosphere including Urban

Canopy: Tanaka, 2004) GSWP2

GSWP2

NDVI (Normalized

Defference Vegetation Index)

2005

NDVI

GSWP2

1 (Hall et al., 2004)

NDVI

京都大学防災研究所年報 第 50 号 B 平成 19 年 4 月

Annuals of Disas. Prev. Res. Inst., Kyoto Univ., No. 50 B, 2007

－ 595 －

Fig. 1 This map shows survey area. NDVI in 16th, Oct, 2006

around Thailand is also indicated.

NDVI

Fig. 1

(Global Earth Observation System

of Systems: GEOSS) 10

GEOSS

NDVI

2. NDVI

NDVI

NDV I =IR − R

IR + R(1)

IR R

The north America

The east Asia

Fig. 2 Spacial distribution of crop type. Shaded for the grid

which has more than 10% of cropland fraction.

NDVI

bise (Viovy et al, 1992) bise

NDVI

2005 Fig. 2

1

1

2.1 NDVI

NDVI

• NDVI

• NDVI

－ 596 －

Fig. 3 Survey area and survey point. NDVI in 16th, Oct,

2006 around Thailand is also indicated.

NDVI NDVI

NDVI

NDVI

1 NDVI

N-NDVI

N-NDVI

•NDVI

•

•

•1

2.2

N-NDVI

N-NDVI

2005 1

Table 1 Crop location and crop calendar

No POINT CROP PERIOD

1 18.51 N, 98.41 E Corn May-Oct

2 18.45 N, 98.39 E Corn Jun-Oct

3 18.36 N, 98.37 E Corn double

4 18.60 N, 98.80 ERice Apr-Jun

Onion Jun-Oct

5 18.99 N, 98.98 ERice Apr-Oct

Potato Nov-Mar

6 18.69 N, 98.90 E Fruit

7 18.92 N, 99.04 E Fruit every time

8 18.71 N, 98.91 E Rice

9 18.90 N, 99.01 ERice Apr-Oct

Soy bean Nov-Mar

10 18.52 N, 98.40 ERice Apr-Oct

Soy bean Nov-Mar

F 18.66 N, 98.57 E Forest

• 4 0.36

• 4 0.19

• 3 3

• 0.22 6

2.3

2005

• 0.30

• 0.65

• 2 0.65 0.65

• N-NDVI 0.65 1

3.

NDVI

2.2

－ 597 －

(1) Corn (18.51N, 98.41E) (2) Corn (18.45N, 98.39E) (3) Corn (18.36N, 98.37E)

(4) Rice&Onion (18.60N, 98.80E) (5) Rice&Potato (18.99N, 98.98E) (6) Fruit (18.69N, 98.90E)

(7) Fruit (18.92N, 99.04E) (8) Rice (18.71N, 98.91E) (9) Rice&Soy (18.90N, 99.01E)

(10) Rice&Soy (18.52N, 98.40E) Under investigation Cooperators in survey

Fig. 4 Landscape of survey point

2006 10 22 23

Fig. 1

Fig. 3

NDVI

2 10

Table 1

F Fig. 4

1 2

4 5

4. NDVI

4.1 MODIS/Terra NDVI

NDVI

250m 16 MODIS (MODerate resolution

Imaging Spectroradiometer) NDVI MODIS

－ 598 －

0.0

0.2

0.4

0.6

0.8

1.0

1 2 3 4 5 6 7 8 9 10 11 12

ND

VI

days

Representative Point 09 2006

(2) Corn

0.0

0.2

0.4

0.6

0.8

1.0

1 2 3 4 5 6 7 8 9 10 11 12

ND

VI

days

Representative Point 03 2006

(4) Rice&Onion

0.0

0.2

0.4

0.6

0.8

1.0

1 2 3 4 5 6 7 8 9 10 11 12

ND

VI

days

Representative Point 05 2006

(7) Fruit

0.0

0.2

0.4

0.6

0.8

1.0

1 2 3 4 5 6 7 8 9 10 11 12

ND

VI

days

Representative Point 08 2006

(10) Rice&others

0.0

0.2

0.4

0.6

0.8

1.0

1 2 3 4 5 6 7 8 9 10 11 12

ND

VI

days

Representative Point 12 2006

(F) Forest

Fig. 5 The time series of NDVI.

Terra Aqua

Terra NDVI

MODIS/Terra NDVI The Land

Processes Distributed Active Archive Center (LP DAAC)

Earth Observing System Data Gateway

2000

••

N-NDVI NDVI

－ 599 －

2000 2006 7

4.2

Fig. 5 8 9

NDVI

5 NDVI

NDVI

NDVI

(1)

1 7 20 23 NDVI

• 0.75

• 0.65

0.15

(2)

• N7 ≤ N8 ≤ N9

• N14 ≤ N15 ≤ N16

• N19 ≥ N20 ≥ N21

Ni i ((i−1)×16+1 i×16

) NDVI

(3)

• N4 ≤ N5 ≤ N6

• N16 − N18 ≥ 0.10

(4)

• N6 ≤ N7 ≤ N8

• N14 ≤ N15 ≤ N16

• N18 ≥ N19 ≥ N20

• 0.70 ≤ N1916 ≤ 0.85

• N1311 ≤ 0.75 N18 − N200.10

N ji i j NDVI

(5)

• N8 ≤ N9 ≤ N10

• 0.70 ≤ N1710 ≤ 0.85

• N1311 ≥ 0.75

• N2018 ≥ 0.85

Fig. 6

Fig. 6 Created crop map through time series analsys of

NDVI.

4.3

MODIS/Terra

1km NASA

NDVI LP DAAC

Earth Observing System Data Gateway

Fig. 7 2004

2000 2006

(Fig. 8 ) MODIS/Terra

－ 600 －

Fig. 7 Landuse created from MODIS/Terra by NASA

Fig. 8 Landuse plan in Mae Wang basin

Fig. 6 Fig. 8

NDVI

5.

NDVI

NDVI

1

MODIS/Terra 1km

250m

250m

Thada Sukhapunnaphan Jaorin

Kongrak Chai Lrmsak

DC

820063600003

Dirmeyer, P., Gao, X., Oki, T. (2002): The second global soil

wetness project (GSWP-2) science and implementation

plan, IGPO Publication Series No.37.

Hall, F.G., B.Meeson, S.Los, L.Steyaert, E.Brown de

Colstoun, D.Landis, eds.ISLSCP Initiative II. NASA.

DVD/CD-ROM.NASA, 2004.

Koster, R.D., P.A.Dirmeyer, et al. : Regions od strong cou-

pling between soil moisture and precipitation, science,

vol.305, pp.1138-1140, 2004.

Tanaka, K. (2004): Development of the new land surface

scheme SiBUC commonly applicable to basin water

management and numerical weather prediction model,

doctoral dissertation, Kyoto University.

Viovy, N., O.Arino: The best index slope extraction (BISE):

A method for reducing noise in NDVI time series,

Int.J.Remote Sensing, Vol.13, No.8, pp.1585-1590,

1992.

Yorozu, K., Tanaka, K., Ikebuchi, S. (2005): Creating a

global 1-degree dataset of crop type and cropping cal-

endar through the time series analysis of NDVI for

GSWP2 simulation considering irrigation effect, Proc.

of 85th AMS Annual Meeting, 19th conference of Hy-

drology, 6.8. (CD-ROM)

2-2

－ 601 －

17

2006.

Creation and Validation of High Resolution Crop Type Map of Mae Wang basin in Northern Thailand Using

the Time Series Analysis of NDVI

Kazuaki YOROZU∗, Kenji TANAKA, Eiichi NAKAKITA and Shuichi IKEBUCHI

∗Graduate school of engineering, Kyoto University

SynopsisThrough the time series analysis of NDVI, the global distributions of crop type and cropping calendar have

been created. Regarding differences of NDVI shape as phenology which shows characteristics of crop, croplands

are classified into various crop types. In this sense, this isn’t applicable to mixture area of many crop types or

landuse. Thus, the filed survey of the information about cropland (crop type, location and cropping calendar) of

Mae Wang basin in northern Thailand is conducted. Using the result of this survey for creation and validation,

high resolution crop type map is created through the time series analysis of NDVI.

Keywords: NDVI, MODIS, time series analysis, crop map, crop calendar, Mae Wang Basin

NDVI

49

pp379-384 2005.

－ 602 －