F"()L MNOPQR(»o¼½1<῎JIRCAS I῎´OµP*+ῌ¶· Q*,ῌ¶·¸¹*,ῌºRST*, ῌ  !"+ ῐῑ

#$ %& '()*+ῌ ,-.
 ῐJapan Inter-/+ῑῌ !ῌ

0123456

national Research Center for Agricultural Sci-

7809῍ ":%῍ ;<=0ences : > ? JIRCASῑ A/BCD ῍ +32/ A:E0

 @ %῍ ,**0   ,*+* 3F / G῍ HIH@()

E.*῍ 0JK῍ +33+ A

/L MNOPQRS1!T" UVW0  X ,*,*  3F 1+2 # ha   ῌ Y$F῍ Z[\HF%῍ Z[0] ῌ\H0^%6_ `&abc

RFD %d0=X!X῍ +33+ 'e()*+f QRS῍ "F%῍ "D0g,-. ῍ /%'Fij0g

ῐRoyal Forest Department : >?

kl10m῍ +33. n2opMN

RFDῑ 0^%6_ L MNqr

0hkl!X'd ῍ estub3 OPQRS0=Xῌ vw%῍ xyz4{|} 3 ~5d ῍ /"IS῍ Y  3F+33/ %'Gῌ'06l1PS !ῌ

m῍ 78E09 !ῌ

,  

/$῍ :;:<- 
=d > ῐ=6 : Japan International Cooperation Agency, >? JICAῑ 0?

"F%῍ @opA%Bz 4 |0h῍ +30+  RFD ῍ ;QR<0]  ῒ"CD  /-῍ ῐ,,1-0 #EVW : The Research and Training inhaῑ !% +33- % ,0῍ 3F*+ !ῌ

Re-a#orestation Project ῐRTR project, +32+῏Y$ FF"F*+%G4῍  %+33- ῑΐ 0f ῍ HI0Z  ¡H\.,῍  +-῍ zJ¢£¤ῌ !X()¥HB28PMK,lQR0¦§¨L©CMª« ῍#F!"% +311!ῌ 3!῍ ¬;'GN­0]  ῒ #/2῍ +323 ()+®0¯F"N­VW : The Reforestation and Ex-° !±²2῍ ,#0& '³Htension Project in the Northeast of Thailand

Yasuhiro Yokota, Atsushi Sakai, Masaharu Sakai and Tadao Gotoh : Research Project on “Development ofTechniques for Nurturing Beneﬁcial Indigenous Tree Species and Management System in Northeast Thailand”*+ ῐῑ ῐ ῐῑῑ*, ῐῑ24

No. 1- ῎,**2῏῏REX project, +33,῎,**. ῐῑ ῍    ῍   

#$%&'()ῌ

-ῐ !"
*+ , ,-./012ῌ- + 3!24-ῌ ῒΐῐ῎῏ῑ῍῔῕56789 :!

+ῐ"#%

῍ RTR = REX   > & 

-῍ !;1῍ <$3+'?!2()@%#'A῍ B'2-῍ C*+,D-E>

./12ῌ F!῍ RTR῍ 0HI=123456'

0JKL7M+ ῏NOPLQRST(U23'V8!W23Xῐ !;1῍ +!3G+'?07"9 :!῍ ;Y,,Z212[\7M3῍ _`;<#!ab1"=c>?1<$7M

῏B!CdDῐ E"e12ῌ῍ fF/2%g./+hij

GH+῍ kIJGlmn"῍ aoKLM$%&;Y3N$%&pqrGmsmt1OPgu@Aῌ OPgu

2ῌ ?1<$7M

 RTR = REX GH+mZsῌ 9!

wxwQRST!#yqz{U/.!

,1῍ t1xwGZ2VW$P|P}~+

3X ῌ NYq2ῌ f῍ TP S Z4῍ ῍ t1xm3XJ=NG

356![q29 :!"\'2<$]/^῍ 3!

#12ῌ ;<#ab./!,1῍ 3

>#'9'CdD_`!GabcE

῏de +ῐῌ

_(ab$%&)q2m!῍ fgh ῌ i+jk'()"#12ῌ]9^῍ ῍ :]@A]῍ B!῍ <$Gv

:!q2"e12- , 3'_F_(ab9 :!
-῍ 3lmB!a4n,ῐ 

G

1Q!#U῍ ῍ Qmnl!Zs῍ JIRCASmo./pq4Gn1CdD_r's RFD o< ,**0  ++ !

GH12ῌ t῍ Qmn=QuvGw0῍ xyzGl{'sfKTY῍ OPgu!; 2Qa¡|p}F12ῌ JIRCAS s./ RFD ῍ p"¢~#'£gPabTYo7 , N¤¥¦῍ %§Q῍ ¨¥aS©ª«S¬P$%&pq>¥m ­¦q2ῌ 1῍ +B4=_WB!

qF12ῌ

1",._(ab$%&pq2ῌ B';῍ %῍ RTR ;Y REX !N!῍ fTYῌabTY!@®"fgh=Q

Z21¯s%ῌ

!iij°ῌ±ao°TY!

gunl{!^²³/ῌ@®"i+jk'(./'2_(ab}gh,**2 !l<´S¬]῍ ,*+* !

)q2ῌ µ #!῍ OPgu( 'l´S¬] gu:¶῍ f/+Z·QG "q2.῍ QUFk¸vpῌq2῍ ¹$ºq·aGG2.῍ (>#!Uy»bAZ2ῌ

Q_p1y¼¯½·>#'abG No. 1- ῍,**2῎25!

Hopea odorata ῏ ῐ῍ + 
 Dipterocarpus sp. ῏ῐῌ ῏ !ῐῌ ῏"# : $%ῐ

, (-῍ .(/0123ῌ4 567*89:(;<=> H. odorata (7?@ABCD(EF>G> (-῍ H1I*JKLῌ * H. odorata (M(N7O

HP(QR7S *῍ +33/ T/U ,**1 .VLῌ. \]^_B>`W,a-L + LW(Q>SL῍ WXW(E.

camaldrensis, A.auriculiformis *(YZ[῍ H.
odorata ([ b!KLῌ cd῍ "#(efGg῍ hiW$L j[%k+7&*JK3H῍ H. odorata (1'lG >῍ m(0V( bn-7oWpq(rW[ ῌ t:W7Eur h*>+,*JKL

()s* (WZK -῍+ῐ vw((-x*yzE4ῌWT ῍ vwW./{,ῐ | }0\]~(.*1(YZ\]~(yz(xῌ237d7  A-L1 ῌ ,**1 4[῍ >)s

WT 5}037 ῍ 17Z

tWz( 6  1  Hopear \]~7|W. ῏789 *.13odorata >Z{\]~7P:haῐῌ }03[῍  00῍ }0῍ --῍ }0῍ ;ῌ h(\]~[῍ +321  W   . }0 ῏<ῐ ( - =gG ῌ Z1῏Acacia

[῍ H. odorata, H. ferrea, Xylia xylocarpa var.

auriculiformis,Sesbania

grandiﬂora,Senna siamea, Eucalyptus camaldrensisῐ > . =gKerrii G ῌ ῍ Z>(῍?@῍ 1(Z} ῏. mῑ2 m, , mῑ2 m, . mῑ. m, , mῑ.

A(B5Wn yz7E4

*hmῐ Z{ ῏S. grandiflora [rW ῐῌG ῌm(¡῍ +33* W H.odorata > . mῑ. m Z-ῐ 1Z(¢CAD

{ῌ +33. W῍ £E(¤ ῏, mῑ2 m, , mῑ

RFD F¥-L῍ -,*** ¦GH§¨+W. mῐ Ig /*῍ (}0>© ῏ª +ῐῌ«¬­῎(Z(JKLM7N®῍ AD6h(¯j῍ H. odorata [ S. siamea (WZK3yz°~7± ῌ z²WTA 1(H(FG[῍ h(¨+W/ (>P.Gg῍>Ob῍ W S. siamea (Z}> , mῑ2 m (¤῍ @³´ h*>QL-Wh(yz761d ῏ ,ῐ ῏µ¶SL῍ T·ῐῌ h(¸¹[ H.

º»U*(h*G ῌ h76 ῍ Zῌ

odorata > ,  ῏+33, ῐ (¼-LTg῍Z½ῌZ1.(z²71WTA Z

26&'()*+ No. 1- ῎,**2῏h*1(Zef>R + Hopea odorata  !"ῌ . #$%&'()* . +, -./)ῌ

01 , Hopea odorata  Senna siamea ῌH. odorata ῌ ῎ : ῏

EFGH῍ IJK3456E'LMNOP

01 - ++ 2%3456 ῎7898:῏ῌ ;< +2ῌ,* mῌ ῎ : =>?@῏QREFGHSTUVῌ WXD'JY῍ +33. 2
XDZ[\* ,**+ 2XD]^_R 2 2`'῍
abR +/+,*-0 c῍ d -/.* e ha fg#6qr*)Vῌ (st῍ EFu'vwxSy)}῍ NOP~m'hijRd 0+.1ῌ

/*.-ῌ ῎hij῏klmn345EoRpOP'p ῍ ()_R345%z'<{w |)

VNOP'Id -2.0ῌ ῎W῏ ῎dSr ῎d ,+.1 e ha῏ῌ 6#uvwR<῍0.* e ha῏

345  hijRd ...0ῌ ῎d +/.1 e ha῏<῍ ' 3456M ῎01

Srῌ 3456E'-῏ῌ W<NOP 'I3456)}῍ dABC66D No. 1- ῍,**2῎6/)Vῌ \῍ 'J27

 $%῍῍ ῎῍  !" #&'( )*#)+ ,- ./01-, 234

567899 -ῌ:&;<==1>)-ῌ

 &' ? >@;!A0-῍  )BC0DE/ῒ @;!

F @;!!G ῑ &'HI-

ῌ "# + J$%$@;!&K'(ῒ )*+,,῍ LM<&NO ῑ-) ῑ,+.0 P'ῌ.῍ -..0 haῌ.ῒ ῑ+ P'&' ῒ HI-@;! ῑQR<ST῕*.+0 haῒῌ +῍ U<V!/-0WX)YZ1[\]ῒ ῑ^_2ῒ _3ῌ 4`abc5$678d-BCeDE῍ 1c5$67

E-9$ O:AAf

c5$674g>@;!&K'(-)

-;hEῌ ij῍ <k=%)῍ )*&,>D*# ῌ'l?@AB῍-) mnoCDpEAF+d῍ +῍ GH) IJqrK#Z($LM>)sN@

Otu9#ZW9+,῍ )*+,῍ m +,/

- ῑLMjvPN@ῒῌ *῍ @;! Qw

RSxy!GῌTz3{!GrK=- ῍3UVsWJ|X})1῍ 53U ῍ Y234AZ@1>)-ῌ

O[Vh῍ \)]^_~῍ <.ῒ @;! __~῍ Qw`  CῌaC#Zb  9)>῍ RFD  ,  c ) d῎#eI=)ῌ 1῍ <JICA ,c H(L*D% ῌk= ? $῍ QR<ST[\]

,ῒ-ῒ5῍ 7fmIs῍ ghijC+ nῐ/ nU;ῌghῌopoiq /*῍ p E  s 1 ῑ,**, o  t  & Ku +0., n

῍ k=($ ῍ 1l=-1^=-r+)abE-ῌ#H῍ RS!GI #s῍ @;!vJ

U;ῌghῌo῍  &'&K u +*.3 nU;ῌ

_wruῌx(yz{|῍ &Kij

ghῌoῒ ῑ,**. o}~ ῍ t&K u +./ n) Tz3{!G#Z(-,_3N@U;ῌῌo῍  &'&K u +.- nU;ῌῌ
oῒ.ῒ

ῑ,**, o  o & K  ῒῌ )$6I+ U ;  ῕ u ,.3+῍ ,* ῐ .* P'ῌ ghs῍ .* P' ῌ gh p /*῍ p E  s 1>)ῑ,**+ ot&K&K

u ,-.* P'ῌgh῍ &'u ,,.+ P'ῌghῒ ῌ ,* P'ῌgh-ῌ/ῌ ῍ῐ῏῎!"῍ RFD (#rῌ

eI><hE>)-ῌ RFD U/ῒ!"¡¢}s£῍ ,**1 o 3 ¤ ¥¦P;§q¨#s῍  q)BCeDE"^©ª,)>sE ῑ .ῒῌ RFD

ῌ '(0? >eE«῍ ,* P'¬­U, !"®=-X7 -ῌ. Xs1-#Z῍ -'(7}s@῍ :¯;>)-sῌ 5s'(7)°0>Eῌ1*῍  !"9)>῍ &'T -2#)]^9)> ῍ $6u +ῌ-ῐ±*D+ῌ. ´$%>DE>)ῌ )$6

ῑ.7 ; h)02b¸-_ῌ#s῍ H῏6^¹)º !"῔ »hEῌ, +  ῍ -qt eI ΐ² ³';¥;<A&'ῒ HI-µ¶·

_w RFD ¼d-1῍ 5>02b¸>H$῍ d-BC&'¹)½$῍ 5 >D*# ῌ$,=-῎f ,Vs#-28 No. 1- ῎,**2῏

HIJKL./MNOPIQRSJLJITUPIV #WMJXYK RFD

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

 0-3 : +,ῌ,+    , Royal Forest Department(,**,) Evaluation report of the economic tree plantation promotion project - year +33.ῌ,***. (in Thai lan- .  ! RFD " #$  +    JIRCAS , - . / 0 1 2 > ?@AB./0 Thiti Visaratana C
#D EF : Sutasinee Potisoontorn-  ,**.

guage)

%&'()*345 , REX-, 6789:;<=.

United Nations Development Programme (,**1) Thai/

land Human Development Report ,**1.

Centerfor agricultural information o$ce of agricultural economics ministry of agriculture & co-operatives (,**0)
Agricultural statistics of Thailand ,**/.

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P GDP 8Yg9: +ῌ. ML;OY(A¡¢MaVv£¤¥¦ §>O z¨+/ 23 ha z w] <=O]3©ª6«M?@+* 23 ha z[;K¬kPIVBloomberg-./0 12345&67­©v j®]¯W +- 1«M23 ha °'±I3 m ³)*OPIV-²³A´g1« ,,/**µBhi¶ª] v ῌ­·ªM¸OPIYK#¹./ºCNDM@g »4¼½K'd«zEFGAPIV

G- No. 1- ῍,**2῎Star Online

29