LES INSTRUMENTS ECONOMIQUES POUR LA REDUCTION DE ...

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MONTPELLIER SUPAGRO Ecole Doctorale Economie et Gestion de Montpellier LES INSTRUMENTS ECONOMIQUES POUR LA REDUCTION DE LA DEFORESTATION TROPICALE. L'EXEMPLE DU MECANISME REDD (Réduction des Emissions liées a la Déforestation et la Dégradation des forêts) Thèse présentée pour obtenir le grade de DOCTEUR EN SCIENCES ECONOMIQUES Section C.N.U 05 Soutenue publiquement le 25 mars 2011 par Solenn Leplay Sous la direction de Sophie Thoyer Rapporteurs : Pascale Combes Motel et Gilles Rotillon JURY Sophie Thoyer Professeur, Montpellier SupAgro Directrice de thèse Jean-Michel Salles Directeur de recherche, CNRS, Montpellier Co-directeur de thèse Pascale Combes Motel Professeur, CERDI Clermont-Ferrand Rapporteur Gilles Rotillon Professeur, Université Paris X, Paris Rapporteur Romain Pirard Docteur, Chargé d’études IDDRI, Paris Examinateur

Transcript of LES INSTRUMENTS ECONOMIQUES POUR LA REDUCTION DE ...

Page 1: LES INSTRUMENTS ECONOMIQUES POUR LA REDUCTION DE ...

M O N T P E L L I E R S U P A G R O

Ecole Doctorale Economie et Gestion de Montpellier

LES INSTRUMENTS ECONOMIQUES POUR LA REDUCTION

DE LA DEFORESTATION TROPICALE.

L'EXEMPLE DU MECANISME REDD

(Réduction des Emissions liées a la Déforestation et la Dégradation des

forêts)

Thèse présentée pour obtenir le grade de

D O C T E U R E N S C I E N C E S E C O N O M I Q U E S

Section C.N.U 05

Soutenue publiquement le

2 5 ma rs 2 01 1

par

Solenn Leplay

Sous la direction de Sophie Thoyer

Rapporteurs : Pascale Combes Motel et Gilles Rotillon

J U R Y

Sophie Thoyer Professeur, Montpellier SupAgro Directrice de thèse

Jean-Michel Salles Directeur de recherche, CNRS, Montpellier Co-directeur de thèse

Pascale Combes Motel Professeur, CERDI Clermont-Ferrand Rapporteur

Gilles Rotillon Professeur, Université Paris X, Paris Rapporteur

Romain Pirard Docteur, Chargé d’études IDDRI, Paris Examinateur

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Montpellier SupAgro n’entend donner aucune approbation ni improbation aux opinions émises dans cette thèse ; ces opinions

doivent être considérées comme propres à leur auteur.

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A Lionel, à Grand Pa et à mes parents,

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Prairies

tempérées

10%

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8%

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26%

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7%

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12%

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Page 133: LES INSTRUMENTS ECONOMIQUES POUR LA REDUCTION DE ...

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i $# (0& (!(3+

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9 F($+$(<

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$"(/$($*& ,'!,&'($&#G

U i1 =

∂U i

∂di

≥ 0 ∀di ∈ ]0, di[

= 0 ∀di ∈[

di, dmaxi

[

2H9I5

U i2 =

∂U i

∂ (wi + Ti)≥ 0, 2H9J5

U i11 =

∂2U i

(∂di)2 ≤ 0, U i

22 =∂2U i

[∂ (wi + Ti)]2 ≤ 0. 2H9K5

L'!,&'(< H9I $"%$.3(&# (03( 4&<!"% 3 -$*&" %&8!'&#(3($!" (0'&#0!+% di, (0& 73'-$"3+ /($+$(<

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%&*&+!,7&"( !8 83'7$"- 3"% +!--$"- 3.($*$($&#@ %/& (! -&!-'3,0$.3+ '&3#!"# 2'&7!(&"&##

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Page 134: LES INSTRUMENTS ECONOMIQUES POUR LA REDUCTION DE ...

!" #$%&!'($)&! *+%,+-.-., /$0"1 !"

U12 = 0 !"!#

$%&'()*' +),' '-.(&'/+0+ 0+ 1(& /2+0%- &/+&23%/4 5/ 2++)6/ &'2& 7()&'/81 ,()1&80/+ /%0*03%/

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A'/ )&0%0&- (9 >/9(8/+&2&0(1 0+ =/8- '0*' 21> 2 ,'21*/ 01 /B(*/1()+ 5/2%&' '2+ %0&&%/ (8 1(

/C/,& (1 &'/ 628*012% )&0%0&- (9 >/9(8/+&2&0(1"

A'0+ +06.%/ 6(>/% ,2.&)8/+ &'/ %(*0, )1>/8%-01* &'/ D(8&'E7()&' >/9(8/+&2&0(1 >0%/662F

7()&'/81 ,()1&80/+ ,21 /1G(- &'/ +26/ (8 ./8'2.+ 2 '0*'/8 %/=/% (9 )&0%0&- 29&/8 %060&E

01* >/9(8/+&2&0(14 .8(=0>/> &'/08 +2,80H,/ 0+ (C+/& 3- 2 +)I,0/1& 01,8/2+/ (9 &'/ +/,(1>

28*)6/1&4 5/2%&'4 &'8()*' H121,02% &821+9/8+"

A'/ :;<< 6/,'210+6 ,(6./1+2&/+ >/=/%(.01* ,()1&80/+ 5'0,' 8/>),/ &'/08 >/9(8/+&2&0(1

3/%(5 2 32+/%01/ %/=/% dbi 4 db

i < di. A'/ H121,02% &821+9/8+ Ti 28/ .20> .8(.(8&0(112%%- &(

&'/ >0C/8/1,/ 3/&5//1 &'/ (3+/8=/> >/9(8/+&2&0(1 82&/ 21> &'/ 32+/%01/F

Ti =

t(

dbi − di

)

09 di < dbi

0 (&'/850+/

t 0+ &'/ &821+9/8 82&/" J& 8/K/,&+ &'/ =2%)/ (9 2=(0>/> >/9(8/+&2&0(1 01 &/86+ (9 8/>),/>

/60++0(1+ (9 ,283(1

" A'/ 3)>*/& (9 &'/ *%(32% &821+9/8 9)1> 6)+& 3/ 32%21,/>" A'/8/9(8/4

09 &'/ +)6 (9 &'/ D(8&'/81 ,()1&80/+L ,(1&803)&0(1+ &( &'/ 9)1> 0+ e &'/1F

T1 + T2 = e

M1>/8 &'/ !"##$%&'!"($ +,/1280(4 01 &'/ 23+/1,/ (9 &'/ :;<< 6/,'210+64 &'/8/ 28/ 1(

6(1/&28- &8219/8+ T1 = T2 = e = 0# 21> 7()&'/81 ,()1&80/+ +/&&%/ 9(8 >/9(8/+&2&0(1

>/,0+0(1+ dNi F

U i1 (di, wi) = 0 ⇒ dN

i ∈[

di, dmaxi

[

N()1&8- i 0+ 01>0C/8/1& 3/&5//1 21- >/9(8/+&2&0(1 >/,0+0(1 dNi ∈

[

di, dmaxi

[

F 5/ 2++)6/

&'2& 0& 50%% ,'((+/ &( >/9(8/+& di" A'/ 8/+)%&01* *%(32% >/9(8/+&2&0(1 %/=/% d1 +d2 0+ G)>*/>

&( 3/ &(( '0*' 3- D(8&'/81 ,()1&80/+F &'/- 28/ 50%%01* &( ,(1&803)&/ &( 2 ,(66(1 H121,02%

9)1> e4 01 (8>/8 &( ,(6./1+2&/ 7()&'/81 ,()1&80/+ 2,,/.&01* &( 8/>),/ &'/08 >/9(8/+&2&0(1

! "#$ $%&&'$!'( )* # *%+,'- ./ #-'*# !0#! t 1.%2( ,' +'#$%-'( #$ /.22."$3 t = CD× 3.67×PC "0'-'

CD )$ !0' 1#-,.* ('*$)!4 ./ 5-'$'-6'( /.-'$!$ 7!.*890#:; 3.67 )$ !0' #!.+)1 -#!). ./ 1#-,.* ().<4('

!. 1#-,.* 7!.*8O2/C: #*( PC )$ !0' 5-)1' ./ #* '+)$$).* 5'-+)! /.- .*' !.* ./ 8O2; .* '<)$!)*&

1#-,.* +#-='!$>

Page 135: LES INSTRUMENTS ECONOMIQUES POUR LA REDUCTION DE ...

!" #$%&!'($)&! *+%,+-.-., /$0"1 !"

!"#$#"#%&'

() "*% +%&" ,- "*% . .%+/ 0% 0#11 &&23% 2&2 1 () 4 !,)4#"#,)& ", $,#4 !,+)%+ 4%!#&#,)&

#) "*% 4,3 #) ]0, dbi ]5

#$%&'('$%

limdi→0

U i1

[

di, wi + t(

dbi − di

)]

− tU i2

[

di, wi + t(

dbi − di

)]

> 0 .

#$%&'('$% !

limdi→db

i , di<dbi

U i1

[

di, wi + t(

dbi − di

)]

− tU i2

[

di, wi + t(

dbi − di

)]

< 0 .

6)4%+ !,)4#"#,)& 7 )4 8 )4 "*% ,"*%+ &&23."#,)& 3 4% &, - +/ "*%+% %9#&"& ) #)"%+#,+

1,! 1 3 9#323 d∗i ", "*% 2"#1#": -2)!"#,) #) "*% #)"%+$ 1

[

0, dbi

]

' (" 0#11 1&, ;% <1,; 1

3 9#323 0*%)5

#$%&'('$% ) U i(

d∗i , wi + t(

dbi − d∗i

))

≥ U i(

di, wi

)

.

6)4%+ =,)4#"#,)& 1, 2 )4 3/ !,2)"+: i>& 2"#1#":/ & -2)!"#,) ,- di, #& 4%.#!"%4 #) ?#<2+%

@'7' (" * & 4#&!,)"#)2#": .,#)" " di = dbi .

A% &&23% "* " #)"%+) "#,) 1 )%<,"# "#,)& ,) "*% #3.1%3%)" "#,) ,- BCDD +2) & -,11,0&5

7' E*% F,+"* 4%!#4%& 2.,) "*% &#G% ,- "*% #)"%+) "#,) 1 -2)4 e' E*#& &" <% !,++%&.,)4&

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MN ;#11#,) -,+ "*% .%+#,4 8N7NJ8N78/ 0*#!* 0#11 . +"1: O) )!% BCDDP !"#$#"#%&' E,

"*#& -2)4 &*,214 ;% 44%4 6LD M'K ;#11#,) .+,$#4%4 &.%!#O! 11: -,+ BCDDP ;:

&2;&%" ,- 4%$%1,.%4 !,2)"+#%&

'

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Page 137: LES INSTRUMENTS ECONOMIQUES POUR LA REDUCTION DE ...

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Page 139: LES INSTRUMENTS ECONOMIQUES POUR LA REDUCTION DE ...

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Page 140: LES INSTRUMENTS ECONOMIQUES POUR LA REDUCTION DE ...

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Page 141: LES INSTRUMENTS ECONOMIQUES POUR LA REDUCTION DE ...

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γ1 U12 (d1, m1)− γ3 U3

2 (d1 + d2, m3) = 0

Page 142: LES INSTRUMENTS ECONOMIQUES POUR LA REDUCTION DE ...

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! &$%" ) '$&1 ! &$%" A( @.%%1 % (/ ).&A ,1 "&$$ #$./"#1 (//$D./ .)"('("($%1 (,!&.%"&9)"9&$% -$H

'$/ =@$,"1 $")05 *P,D$/%$,1 233450 Q#(% "8=$ ! (,! &@."( , (% &.&$/8 .'.(/.A/$ (, "& =()./

) 9,"&($% A9" "# %$ B# B(%# " A$ $/(D(A/$ ! & S;ZZ #.'$ V (,$- . &$.-(,$%% =#.%$

! & S;ZZ1 A9(/-(,D "#$(& @ ,(" &(,D1 &$= &"(,D .,- '$&(I)."( , *\S]5 ).=.)("($%1 .,-

%"&$,D"#$,(,D (,%"("9"( ,% *&$-9)"( , ! ) &&9="( ,1 )/.&(I)."( , ! /.,- 9%$ &(D#"% .,-

Page 167: LES INSTRUMENTS ECONOMIQUES POUR LA REDUCTION DE ...

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-$9)3) !"

!" #!$% !&'($)* #$+,- ./#!"01 231 456$)+(* 7889-, :(# &; 0#;#3$2$&"3 "< $(# =!)$ (2)#

>&00 ?# =323+#1 ?% @"!$(#!3 A"063$2!% <631), B3 $(# C" #3(2'#3 2++"!1 #)$2?0&)(#1 2$

$(# CDE FG &3 7889* H4* I6)$!20&2* J!23+#* K2 23* @"!>2% 231 $(# HL !";&)#1 H4M N,G

?&00&"3 <"! <2)$O)$2!$ <631) $" #; ">#! PQMM, B3 $(# ;"3$() <"00">&3' C" #3(2'#3 $(&)

='6!# )6! 2))#1 H4M R,G ?&00&"3, B3 $(&) 2!$&+0#* ># ;25# $(# 2))6; $&"3 $(2$ $!" &+20

+"63$!&#) (2A# ?##3 2?0# $" 2)) $(# !#21&3#)) (2)# )6++#))<600% 231 (2A# $(# +2 2+&$% $"

&; 0#;#3$ EQ4 )+(#;#) $" !#16+# $(#&! 1#<"!#)$2$&"3, :(&) ;#23) $(2$ $(#% 2!# 2?0# $"

#)$&;2$# 231 !# "!$ +2!?"3 #;&))&"3) 2$ 32$&"320 0#A#0* 2) )#$ 6 &3 $(# BECC S""1 E!2+O

$&+# 231 S6&123+# .BECC* 788NT 788U- <"! !# "!$&3' 2$ $(# &3$#!32$&"320 0#A#0* 231 $(2$

$(# 3#+#))2!% #V #3)#) <"! "0&+% !#<"!; (2A# ?##3 ;21# $" +02!&<% 0231 !&'($)* &; !"A#

$(# #3<"!+#;#3$ "< 02> 231 #!21&+2$# +"!!6 $&"3* <2+&0&$2$&3' $(# &; 0#;#3$2$&"3 "< 23

#W#+$&A#* #X+&#3$ 231 #Y6&$2?0# PQMMOEQ4 ;#+(23&); 2$ 2 ;#23&3'<60 )+20# .S!#'#!)#3

#$ 20,* 78F8T I3'#)0#3* 7889-, Z# 2))6;# $(#!#<"!# $(2$ $(#% 2!# &3 $(# &; 0#;#3$2$&"3

(2)#[ 2 32$&"320 !#<#!#3+# 0#A#0 (2) ?##3 3#'"$&2$#1 231 $(#&! '"A#!3;#3$) 2!# &; 0#O

;#3$&3' 1";#)$&+ "0&+&#) 2+$&"3) &3 "!1#! $" 2+(&#A# 1#<"!#)$2$&"3 !#16+$&"3* =323+#1 ?%

@"!$(O4"6$( 2%;#3$, Z# <"+6) (#!# "3 $(# EQ4 "0&+% &3)$!6;#3$,

!"! #$%&'()*(%+) ,-.+/0&1/ +/2 .1)&'3 1.*&1/0 *1

%,2(', 2,41%,0*+*&1/5 + 6()*&7),8,) 9:; 0'<,6,

:(&) )#+$&"3 !"A&1#) 2 )$2$&+ ;"1#0 "< 1#<"!#)$2$&"3 1#+&)&"3) ?% 0231 6)#!)* >(&+( &)

$(#3 6)#1 $" &1#3$&<% " $&;20 EQ4 "0&+% " $&"3) <"! 4"6$(#!3 '"A#!3;#3$), B$ &) ?2)#1

"3 )&; 0# 2))6; $&"3) >(&+( (#0 6) $" +2 $6!# "3# "< $(# &; "!$23$ <#2$6!#) "< EQ4

)+(#;#)[ $(# )$!6+$6!# "< 0231 6)#!)\ " "!$63&$% +")$),

!"!#! $%&'()*+)&,* -./,01'20 '0 , 3)1'0-114,14)1),* 5-62&-1+,+'20

Z# +"3)&1#! 2 " 602$&"3 "< 0231 6)#!) i* +200#1 ]<2!;#!)^ &3 $(# !#)$ "< $(# 2 #!* !2+O

$&+&3' 2'!&+60$6!# &3 <!"3$&#! <"!#)$ 0231, Q2+( <2!;#! i ;2% 3##1 $" #V$#31 (&) <2!;#1

0231* +("")&3' ("> ;6+( <"!#)$ (# >&00 +"3A#!$ $" 2'!&+60$6!#, I))6;&3' !&)5O3#6$!20&$%*

$(&) +("&+# $25#) $(# <"!; "< 2 !"=$ ;2V&;&_&3' !"?0#;[

maxL

Πi = maxL

λi f (L (λi))− ω L (λi) .U,F-

f &) $(# 2'!&+60$6!20 !#A#36# <63+$&"3 "< 211&$&"320 1#<"!#)$#1 0231 L (λi), f(L, z) = P ×y(L, z)−C(z). >(#!# y &) $(# 2'!&+60$6!20 !"16+$&"3 <63$&"3 1#=3&3' $(# "6$ 6$ Y623$&$%

Page 168: LES INSTRUMENTS ECONOMIQUES POUR LA REDUCTION DE ...

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-$9)3) !"

! "#$%&'($ (" )*"(+*!&*) , $) L $) &-* .*%&(+ (" ,, (&-*+ '$/#&! z0 P '! &-* /+'%* ("

(#&/#& $) C(z) '! &-* %(!& (" ,, (&-*+ '$/#&!1 2* !!#3* f &( 4* &5'%* )'6*+*$&' 4,* $)

7# !' %($% .* f ′ > 0 $) f ′′ ≤ 01 λi '! $ *8%'*$%9 " %&(+ %- + %&*+':'$; * %- " +3*+ i

(λi > 0)1 <& *$%(3/ !!*! 4(&- &-* /+()#%&'.'&9 (" )*"(+*!&*) , $)0 5-'%- )*/*$)! 3 '$,9

($ '&! !,(/*0 *,*. &'($0 (+ 7# ,'&9 (" !(', => '3(5'&: $) ?$;*,!*$0 @AABCD &-* " +3*+E!

&*%-$'% , % / %'&9 =5-'%- )*/*$)! ($ '&! *7#'/3*$& $) %%*!! &( &*%-$(,(;'*!CD $) &-*

)'6*+*$%* 4*&5**$ &-* ,(% , /+'%* $) &-* $ &'($ , /+'%* (" (#&/#&! $) '$/#&! =5-'%-

3 9 )*/*$) ($ &-* )'!& $%* &( 3 '$ +( )! (" " +3*+ i $) ($ -'! 4 +; '$'$; /(5*+C1 2*

!!#3* &- & &-* !*& (" " +3*+! i '! )'!&+'4#&*) #$'"(+3,9 ,($; λi ∈[

λ; λ]

1 ω '! &-* #$'&

%(!& (" , $) %($.*+!'($1 2* !!#3*0 5'&-(#& ,(!! (" ;*$*+ ,'&90 &- & &-'! %(!& '! %($!& $&

%+(!! , $) & &-* "(+*!& "+($&'*+"

1

<$ &-* 4#!'$*!!F !F#!# , !%*$ +'( =G?HC0 '1*1 5'&-(#& $9 /(,'%9 '$%*$&'.* &( +*)#%*

)*"(+*!& &'($0 * %- " +3*+ i %-((!*! &-* ,*.*, (" )*"(+*!& &'($ LBAUi (λi) 3 I'3':'$; -'!

/+(J&1 K-* J+!&F(+)*+ %($)'&'($ '!L

dΠi

dL= 0 ⇐⇒ λi f

′ (L (λi))− ω = 0 ⇐⇒ f ′ (L (λi)) =ω

λi

=M1NC

O'$%* f ′ '! !&+'%&,9 3($(&($'% ,,9 '$%+* !'$;0 LBAUi (λi) = (f ′)−1

(

ωλi

)

1

2* )*J$* λ0 = ωf ′(0)

!"# $%&'% LBAUi (λ0) = 0( )* +%, #,-+ "! +%, .*./0-&- $, $&// "*/0

'"*-&1,# . 2"23/.+&"* "! !.#4,#- $%" 1,!"#,-+ 3*1,# +%, 567 -',*.#&"

( 8, .--34,

+%,#,!"#, +%.+ λ > λ0 ( 7*1,# +%&- '"*1&+&"* LBAUi (λi) > 0 !"# .// λi( 9%, 1,!"#,-+.+&"*

:,%.;&"3# &- &//3-+#.+,1 &* <&=3#, >(?( <"# λi < λj +%,* LBAUi (λi) < LBAU

j (λj)( 6// !.#4,#-

1,!"#,-+ .*1 +"+./ 1,!"#,-+.+&"* .+ +%, *.+&"*./ /,;,/ &- LBAUT $&+% LBAU

T =´ λ

λLBAU

i (λ) dλ(

!"!#! $%& '()) *&+%,-./*0 , 1234%56274% 8,9*&-4 42 ,:2.;

;&<23&/4,4.2-

@.'% +#"2&'./ '"3*+#0 +%.+ #,13',- &+- 1,!"#,-+.+&"* #,',&;,- . A@BB 2.04,*+ T !#"4

1,;,/"2,1 '"3*+#&,- 2#"2"#+&"*./ +" &+- .;"&1,1 '.#:"* ,4&--&"*-( <"# -&42/&'&+0 $,

'./'3/.+, +%, A@BB 2.04,*+ "* +%, :.-&- "! .;"&1,1 1,!"#,-+.+&"* A 43/+&2/&,1 :0 .

-&*=/, 2#"C0 ;./3, !"# +%, D3.*+&+0 "! '.#:"* -+"#,1 &* ,.'% %,'+.#, "! !"#,-+( E,;,#./

4,+%"1- !"# -,++&*= +%, *.+&"*./ #,!,#,*', /,;,/ F53-'% ,+ ./ GHHIJ $&+% #,-2,'+ +" $%&'%

.;"&1,1 1,!"#,-+.+&"* ,4&--&"*- .#, './'3/.+,1 .#, 3*1,# *,="'&.+&"* F7K<LLL GHHIJ(

!"#$ %&' $!$(%)*"& +%& %!," %-$+) ).$ +",) "/ !%&' +"&($0,*"& 12) 3$ %,,24$ ).%) ).$,$ $-$+), %0$

4"0$ *4#"0)%&) "& ).$ #0"'2+)*"& /2&+)*"& ).%& "& ).$ +",) "/ +"&($0,*"&5

!

6.$0$ *, *& 0$%!*)7 ).0$$ +%,$,8 '$($!"#$' *& 9##$&'*: ;

Page 169: LES INSTRUMENTS ECONOMIQUES POUR LA REDUCTION DE ...

O

LBAUT =

´ λ

λLBAU

i (λ) dλ

LPT =´ λ

λLP

i (λ) dλ i

LPi (λi) T

T = t A = t (LBAUT − LP

T )

t 2

t = P × EF P

EF

EF

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-$9)3) !"

!"!"! #$%&'($) )*+*), -./ 012*3*0

!"!"!#! $%&'()*+ ,%-)*+.)+'/0 %1'2.34 5)6202%+0 '% 6&*7 5)8%*)0'3'2%+

!" #$%&!"'( )$%(&'* +"&+ %, - ./# +)!"0" &$ '"1%)" 1"2$'"+&-&3$(4 3( $'1"' &$ 5$3(

&!" 3(&"'(-&3$(-6 7/88 0")!-(3+0 -(1 $9&-3( &!" ,-*0"(& T 1"+)'39"1 -9$:" 2'$0

;$'&!"'( )$%(&'3"+< =" 0->" &!" -++%0,&3$( &!-& #$%&!"'( )$%(&'3"+ !-:" '"-13"1 &!"

3(2'-+&'%)&%'" (")"++-'* &$ 0$(3&$' "03++3$( '"1%)&3$(+ -& &!" (-&3$(-6 6":"6< =" )$(+31"'

&?$ &*,"+ $2 #$%&!"'( @$:"'(0"(&+A - B9"(":$6"(&C @$:"'(0"(& &!-& 0-D303E"+ +$)3-6

?"62-'"4 F0"-+%'"1 !"'" -+ &$&-6 -@'3)%6&%'-6 ,'$G& ,6%+ 3()$0" 2'$0 &!" 3(&"'(-&3$(-6

7/88 ,-*0"(&H4 -(1 - B9%1@"&I0-D303E3(@C @$:"'(0"(& &!-& 0-D303E"+ &!" 13J"'"()"

9"&?""( 3()$0" 2'$0 &!" 3(&"'(-&3$(-6 7/88 ,-*0"(& -(1 ,-*0"(&+ 0-1" &$ 2-'0"'+

%(1"' ./# +)!"0"+

< !3+ B9%1@"&I0-D303E3(@C &*," )-( )-,&%'" &!" 2"-&%'"+ $2 -

)$''%,& @$:"'(0"(&4 ?-(&3(@ &$ 13:"'& ,%963) 0$("* &$ &!" 9"("G& $2 - ,$63&3)-6 "63&"4 9%&

3& )-( -6+$ 1"+)'39" - @$:"'(0"(& ?-(&3(@ &$ 3(:"+& 7/88 3()$0" 3( $&!"' +")&$'+ F2$'

"1%)-&3$(4 !"-6&!4 3(2'-+&'%)&%'"4 $' ":"( -@'3)%6&%'"H< K66 63("-' )$093(-&3$(+ $2 &!"+"

&?$ "D&'"0" &*,"+ 1"+)'39" &!" '-(@" $2 @$:"'(0"(&-6 9"!-:3$'+ &!-& )$%61 9" $9+"':"1<

!" @$:"'(0"(& 0-D303E"+ 3&+ %&363&* U 4 +%95")& &$ 9%1@"& )$(+&'-3(& &!-& &$&-6 ./#

,-*0"(&+ )-(($& "D)""1 7/88 ,-*0"(&+A

max U = T + α (ΠBAUT + ΠP

T ) + (1− α) (−E) FL<MH

s.t. T ≥ E

?!"'" ΠP3+ &!" &$&-6 -@'3)%6&%'-6 ,'$G& $2 -66 2-'0"'+ ,-'&3)3,-&3(@ 3( &!" (-&3$(-6 ./#

+)!"0"4 "D)6%13(@ ./# '")"3:"1

!

4 -(1 ΠBAU3+ &!" &$&-6 -@'3)%6&%'-6 ,'$G& $2 -66 2-'0"'+

?!$ 1$ ($& ,-'&3)3,-&" 3( &!" ./# +)!"0" -(1 ,%'+%" &!"3' NKO -@'3)%6&%'-6 -)&3:3&3"+<

E )$''"+,$(1+ &$ &!" ,-*0"(& 2'$0 &!" #$%&!"'( @$:"'(0"(& &$ 2-'0"'+ ,-'&3)3,-&3(@ &$

&!" ./#< α 1"+)'39"+ &!" &*," $2 @$:"'(0"(&A 32 α = 14 &!" @$:"'(0"(& 3+ 9"(":$6"(&4

-(1 3& 0-D303+"+ &$&-6 ?"62-'" 0"-+%'"1 !"'" -+ &!" +%0 $2 3(&"'(-&3$(-6 ,-*0"(&+ ,6%+

,'$G&+ @"("'-&"1 9* -@'3)%6&%'-6 -)&3:3&3"+ P -(1 32 α = 04 3& 3+ 9%1@"& 0-D303E3(@<

?$ ./# +)!"0"+ -'" )$(+31"'"1 3( &!" 2$66$?3(@ +")&3$(

"

A

!" #$%&'$()*+$!,- ./ 0! ,!+ )!,#$0/" +1/ &!+/,+$*' &!#$+$2/ 3//04*)5 /6/)+# !, +1/ 4708/+ !3 +*9

"/2/,7/ 3"!% *8"$)7'+7"/:;/ *'#! *##7%/ +1*+ 8!2/",%/,+# 0! ,!+ +*5/ $,+! *))!7,+ $, +1/$" 7+$'$+<

37,)+$!, +1/ /,2$"!,%/,+*' 0/8"*0*+$!, *##!)$*+/0 .$+1 0/3!"/#+*+$!,:

!

=>? &*<%/,+# +! 3*"%/"# *"/ ,!+ $,)'70/0 4/)*7#/ +1/< *"/ )!,#$0/"/0 0!%/#+$) &*<%/,+#@ +1/< *"/

0/07)+/0 3"!% +1/ &74'$) 4708/+ *,0 *00/0 +! 3*"%/"# #7"&'7#: A3 ./ *##7%/ +1*+ =>? 1*2/ ,!

+"*,#*)+$!, )!#+#- +1/, +1/#/ &*<%/,+# *"/ ,/7+"*' $, +/"%# !3 +!+*' 0!%/#+$) ./'3*"/:

"

B1/#/ #)1/%/# *'$8, )'!#/'< .$+1 +1/ CD7*#$E*7)+$!, #)/,*"$!F *,0 C&/"E+!, )*"4!, &*<%/,+ %!0*'$+<F

0/#)"$4/0 $, G!",/" /+ *' HIJKJL

Page 171: LES INSTRUMENTS ECONOMIQUES POUR LA REDUCTION DE ...

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-$9)3) !"

! "# $%&&%'()#*(+ ,%-(. ,%/&0#-1(*%# -,20/0 *# 32*,2 01,2 &1'(*,*&1(*#4 51'/0' *-

061,(7+ ,%/&0#-1(08 5%' 2*- %&&%'()#*(+ ,%-( %5 '08),*#4 805%'0-(1(*%#9 :# (2*- -,20/0;

30 1--)/0 (21( &1'(*,*&1(*#4 51'/0'- 1'0 '0<)*'08 (% 1=1(0 805%'0-(1(*%# (% >0'%9 ?20

-0((*#4 )& %5 -),2 -,20/0 '0<)*'0- (21( (20 -,20/0 /1#140' @(20'015(0' (20 4%A0'#/0#(!

1,<)*'0- 1 4%%8 B#%370840 %5 *#8*A*8)17 51'/0'C- 14'*,)7()'17 &'%D(-9

E! " $D608F&'*,0. -,20/0 *# 32*,2 51'/0'- 1'0 177 %G0'08 (20 -1/0 D608 &1+/0#( &0'

20,(1'0 %5 1A%*808 805%'0-(1(*%# '071(*A0 (% (20*' H"I 805%'0-(1(*%#9 I#80' (2*- -,20/0;

51'/0'- ,2%%-0 (20 70A07 %5 1A%*808 805%'0-(1(*%# (20+ 31#( (% 1,2*0A09 ?2*- *- =1-08 %#

(20 1--)/&(*%# (21( &)=7*, 1)(2%'*(*0- ,1# %=-0'A0 *#8*A*8)17 805%'0-(1(*%# 70A07-; =%(2

)#80' H"I 1#8 )#80' JKL ,%#('1,(9

!"!"!#! $%& '((')*+,-*. /'0* /'1(&,02*-', 0/%&1&

:# (20 %&&%'()#*(+ ,%-( ,%/&0#-1(*%# -,20/0 @MN! ; 30 1--)/0 (21( (20 4%A0'#/0#( ,1#

%=-0'A0 51'/0'-C *#8*A*8)17 1/%)#(- %5 805%'0-(08 1'01- )#80' H"I; 1- 3077 1- 51'/0'-C

%&&%'()#*(+ ,%-(-9 ?20 4%A0'#/0#( %G0'- 1 ,%/&0#-1(*%# &1+/0#( (% 51'/0'- 0<)17

(% (20*' 5%'04%#0 '0A0#)0; *5 51'/0'- 14'00 (% 1=1(0 (20*' 70A07 %5 805%'0-(1(*%# (% >0'%

@LPi (λi) = 0 *5 i O%*#- (20 -,20/0!9 :# (20%'+; 51'/0'- 1'0 06&0,(08 (% =0 *#8*G0'0#(

=0(300# &1'(*,*&1(*#4 *# (20 &'%4'1/ *# 06,21#40 5%' (20 5%'04%#0 &'%D(; %' &)'-)*#4

(20*' 14'*,)7()'17 1,(*A*(*0-9 P0 1--)/0 20'0 (21(; *5 4*A0# (20 ,2%*,0; 51'/0'- -*4# )&

1#8 1=1(0 805%'0-(1(*%# (% >0'%9 ?20 4%A0'#/0#( ,1# (2)- -070,( (20 51'/0'- (% 32%/ (%

&'%&%-0 1 JKL ,%#('1,(; 1#8 3*77 -070,( (2%-0 51'/0'- 3*(2 (20 7%30-( %&&%'()#*(+ ,%-(-9

?20 -,20/0 *- *77)-('1(08 *# Q*4)'0 R9ES *# (20 H"I -,0#1'*%; 51'/0'- λ;λ1 1#8 λ 805%'0-(

MH; MT 1#8 MK '0-&0,(*A07+9 :# (20 ,1-0 320'0 51'/0'- λ 1#8 λ1 1'0 -070,(08 (% &1'(*,*F

&1(0 *# (20 MN -,20/0; 51'/0' λ '08),0- 805%'0-(1(*%# (% >0'% 1#8 40(- &1*8 M"H; 51'/0'

λ1 17-% -(%&- 805%'0-(1(*%# 1#8 40(- 1 ,%/&0#-1(*%# MNT; 1#8 51'/0' λ *- #%( *#A*(08 (%

O%*# (20 -,20/0; =)( 805%'0-(- 1'01 MK9

?20 4%A0'#/0#( ,2%%-0- (20 (%(17 70A07 %5 805%'0-(1(*%# 32*,2 /16*/*>0- *(- )(*7*(+; -)=O0,(

(% (20 =)840( ,%#-('1*#( (21( (%(17 &1+/0#(- (% 51'/0'- 1'0 #%( 4'01(0' (21# UKTT

&1+/0#(-9 Q1'/0'- 1'0 *#A*(08 (% O%*# (20 -,20/0; -(1'(*#4 3*(2 (20 7%30-( %&&%'()#*(+

,%-( 51'/0'; )& (% (20 $/1'4*#17 51'/0'. λ; 32%-0 ,%#('*=)(*%# (% (20 -,20/0 0#1=70- (20

4%A0'#/0#( (% 1,2*0A0 *(- ,2%-0# 70A07 %5 1A%*808 805%'0-(1(*%#9 Q1'/0' λ *- (2)- (20 71-(

51'/0' O%*#*#4 (20 MN -,20/09 ?2*- 51'/0'- -&7*(- (20 &%&)71(*%# *#(% (3% 4'%)&-S (2%-0

32% &1'(*,*&1(0

(

λ ∈ [λ, λ])

; 1#8 -(%& 805%'0-(*#4

(

LPi (λi) = 0

)

*# 06,21#40 5%' 1# 061,(

,%/&0#-1(*%# %5 (20*' %&&%'()#*(+ ,%-(-; 1#8 (2%-0 32% 8% #%( &1'(*,*&1(0

(

λ ∈ [λ, λ])

;

1#8 ,%#(*#)0 (% 805%'0-( 1- )-)17

(

LBAUi (λi)

)

9

Page 172: LES INSTRUMENTS ECONOMIQUES POUR LA REDUCTION DE ...

Marginal profit of

deforestation

Deforested area

A

BO

C

D E

maxλB

U = maxλB

t

ˆ λB

λ

LBAUi (λ)dλ +

ˆ λ

λB

ΠBAUi (L (λ))dλ

s.t. t

ˆ λB

λ

LBAU(λ)dλ ≥ˆ λB

λ

ΠBAUi (L (λ))dλ

maxλM

U = maxλM

t

ˆ λM

λ

LBAUi (λ)dλ−

ˆ λM

λ

ΠBAUi (L (λ))dλ

s.t. t

ˆ λM

λ

LBAU(λ)dλ ≥ˆ λM

λ

ΠBAUi (L (λ))dλ

λ´ λ

λΠBAU

i (L (λ))dλ´ λ

λΠBAU

i (L (λ))dλ

λ = λB = λM

t t = Π(LBAU (λ))

LBAU (λ)

λ

Page 173: LES INSTRUMENTS ECONOMIQUES POUR LA REDUCTION DE ...

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!"! # $%&'()*%#'( +,- ."' &,'. t /. ,' 0.,1' .2#,0 '% '(. ,3.&,4. %++%&'#"!'- 5%1'

%6 λ7 !" '(!1 5,1. λ !1 '(. %"0- 6,& .& 8%!"!"4 '(. 15(. . ,"9 tmin =Π(LBAU (λ))

LBAU (λ): ;%&

%&. 9.',!01 ,/%#' &.1#0'1< 1.. =++."9!> ?:

!"!"!"! #$% &'%()*+,-% .-$%/%

@" '(. A>.9)+&!5. B;CD 15(. .< '(. 4%3.&" ."' %E.&1 , A>.9)+&!5. K +.& #"!' %6 ,3%!9.9

9.6%&.1','!%": F,5( 6,& .& i 8%!"!"4 '(. 15(. . 5(%%1.1 '(. 0.3.0 %6 9.6%&.1','!%" LPi (λi)

(. G,"'1 '% 5% !' '%< !" %&9.& '% ,>! !H. (!1 !"5% . RP (λi): I(. 4%3.&" ."' 5(%%1.1

'(. '%',0 9.6%&.1','!%" 0.3.0 '% ,>! !H.< '(." 1.'1 '(. %+'! ,0 K∗+.& (.5',&. %6 ,3%!9.9

9.6%&.1','!%" 5%&&.1+%"9!"4 '% '(. 9.1!&.9 '%',0 ,3%!9.9 9.6%&.1','!%":

;!4#&. J:K !00#1'&,'.1 '(. A>.9)+&!5. 15(. .7 6,& .&1 λ, λ, λ 8%!" '(. 15(. .: ;,& .&1 λ

,"9 λ &.9#5. 9.6%&.1','!%" '% H.&% ,"9 4.' +,!9 &.1+.5'!3.0- L=MN ,"9 L=OF: ;,& .&

λ &.9#5.1 9.6%&.1','!%" 6&% L@ '% L? ,"9 4.'1 +,!9 ;P?@:

I(. 6,& .&Q1 ,>! !H,'!%" +&%4&, !17

maxL

RP = λi f (L (λi))− ω LPi (λi) + K

(

LBAUi (λi)− LP

i (λi))

BJ:JD

s.t. LBAUi (λi) > LP

i (λi) ,"9 RP (λi) > ΠBAUi (Li)

I(. A&1')%&9.& 5%"9!'!%" !17

dR

dL= 0 ⇐⇒ f ′ (Lp (λi)) =

ω + K

λi

BJ:RD

*!"5.

ω+Kλi

≥ ωλi,"9 f ′ !1 , 9.5&.,1!"4 6#"5'!%"< LP

i (λi) = f ′−1(ω+Kλi

) ≤ LBAU (λi) !1

,0G,-1 3.&!A.9:

I(. /.".3%0."' 4%3.&" ."'Q1 ,>! !H,'!%" +&%/0. !17

maxKB

U(

KB)

= maxKB

t

ˆ λ

λ

(

LBAUi (λ)− LP

i

(

λ, KB))

dλ +

ˆ λ

λ

ΠPi

(

λ, KB)

dλBJ:SD

s.t. t ≥ KB

T(!0. '(. /#94.') ,>! !H!"4 4%3.&" ."'Q1 +&%4&, !17

maxKM

U(

KM)

= maxKM

(

t−KM)

ˆ λ

λ

(

LBAUi (λ)− LP

i

(

λ, KM))

dλ BJ:UD

s.t. t ≥ KM

Page 174: LES INSTRUMENTS ECONOMIQUES POUR LA REDUCTION DE ...

KB

KM

K3

K1

Marginal profit of

deforestation

Deforested

area

A B

O C E

D GF

sted IH

KB∗ KM∗

K∗

K∗, < λ f ′ (0) − ω ⇒ LPi (λi) = f ′−1

(

ω+K1

λi

)

, ∀λ ∈[

λ; λ]

K∗ = K1

LPT =´ λ

λLP

i (λ) dλ

λ f ′ (0)−ω ≤ K∗ < λ f ′ (0)−ω,⇒

LPi (λi) = 0 ∀λ ∈

[

λ; λ]

LPi (λi) = f ′−1

(

ω+K2

λi

)

∀λ ∈[

λ; λ]

K∗ = K2 λ = ω+K2

f ′(0)

λ ∈[

λ; λ]

λ ∈[

λ; λ]

LPT =

´ λ

λLP

i (λ) dλ

K∗ ≥ λ f ′ (0) − ω, K∗ = K3 ⇒ LPi (λi) = 0 ∀λ ∈

[

λ; λ]

K = λ f ′ (0)−ω

t ≥ K

Page 175: LES INSTRUMENTS ECONOMIQUES POUR LA REDUCTION DE ...

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B

K

A

N

M

C

O

F

DE

G

H

FP>OC

Avoided deforestation: OD < AD+EH

PES budget expenses: OMD > ABCD + FGEH

Agent j

Agent k

Marginal profit of

deforestation

L

FP < OC

Avoided deforestation: O’D’ > A’D’+E’H’

PES budget expenses: O’M’D < A’B’C’D’+F’G’E’H’

K’B’

A’

N’

M’

C’

O’

F’

D’ E’

G’

H’

Agent j’

Agent k’

Marginal Profit of

deforestation

L

I$'& @ T V &&3 ;$%1!#$. I$'& BT J.$ ;$%1!#$.

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i + bLi + c? @.24

a < 0, !/* b, c > 0& 47+ f ′ (Li) = aLi + b !/* 24$ #,@$0 a .+? 24$ +2$$5$0 24$ 1!0=./!#

3709$ .+& D+ 1$/2.,/$* !",9$? .2 .+ ! 3073.!# $#$1$/2 *$2$01././= 24$ 0$#!2.9$ "7*=$2!0>

$R3.$/3> ,- 24$ 2@, +34$1$+&

4$ SDX *$-,0$+2!2.,/ 0!2$ -,0 -!01$0 i .+ 247+ LBAUi (λi) = ω

aλi− b

a? !/* 4.+ 50,Q2

Page 178: LES INSTRUMENTS ECONOMIQUES POUR LA REDUCTION DE ...

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'&"89$0&!(' !"

! ΠBAUi (λi) = − ω2

2aλi+

(

c− b2

2a

)

λi + bωa

" #$ %& '$(! !)&() * )+ !&') $( ,- *& .&!). ')

/0.01&)&. 2034&! ( $.5&. )$ 3 1 ) $4. 0(036! ! )$ 0 /$/430) $( $7 70.1&.! +02 (8 !). ')

/$! ) 2& 2034&! $7 9:; 5&7$.&!)0) $(< LBAUi > 0 ⇒ ω

b< λi 0(5 ΠBAU (λi) > 0 ⇒

− ω2

2aλi+

(

c− b2

2a

)

λi > − bωa

"

# ;(5&. )+& => !'+&1&- )+& %&(&2$3&() 0(5 )+& %458&)?10@ 1 A (8 8$2&.(1&()!

05$/) )+& !01& )0.8&) 8.$4/ $7 /0.) ' /0) (8 70.1&.!" #+& 10.8 (03 08&() !/3 )) (8

)+& 70.1&.!B /$/430) $( ()$ )*$ 8.$4/! ! λ <

λ =b (ω + t) +

√t2b2 + 2acω2 + 4acωt

b2 − 2ac

C )+ 2034&! $7 a- b- c- t- 0(5 ω !4'+ )+0) t2b2 + 2acω2 + 4acωt > 0"

# ;(5&. )+& D@&5?/. '& !'+&1&- 70.1&.! 10@ 1 A& )+& . ('$1&- '+$$! (8 )+& . 3&2&3

$7 5&7$.&!)0) $( LPi (λi) = 1

a

(

ω+Kλi− b

)

" :2$ 5&5 5&7$.&!)0) $( %6 70.1&. i ! A =

LBAUi − LP

i = − Kaλi

> 0 0(5 + ! ('$1& 4(5&. )+& !'+&1& ('.&0!&!< RPi − ΠBAU

i =

− K2

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Page 218: LES INSTRUMENTS ECONOMIQUES POUR LA REDUCTION DE ...

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Page 219: LES INSTRUMENTS ECONOMIQUES POUR LA REDUCTION DE ...

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Page 221: LES INSTRUMENTS ECONOMIQUES POUR LA REDUCTION DE ...
Page 222: LES INSTRUMENTS ECONOMIQUES POUR LA REDUCTION DE ...

Thèse de doctorat de Solenn Leplay.

Les instruments économiques pour la réduction de la déforestation tropicale. L’exemple du

mécanisme REDD (Réduction des Emissions liées à la Déforestation et la Dégradation des Forêts).

Résumé : Réduire la déforestation dans les pays tropicaux est un des principaux défis pour la communauté

internationale dans le cadre du processus de négociations de la Convention Cadre des Nations Unies sur le

Changement Climatique (CCNUCC). En effet, la déforestation est la seconde source d’émissions de gaz à effets

de serre, juste derrière les émissions industrielles. Depuis 2005, un nouvel instrument international pour réduire

les émissions de carbone liées à la déforestation tropicale est en négociation à la CCNUCC. Ce mécanisme,

appelé REDD+ (Réduction des Emissions liées à la Déforestation et Dégradation des forêts) repose sur un

système de compensation financière des pays en développement pour leurs efforts en termes de déforestation

évitée. Cependant, la mise en œuvre du mécanisme REDD+ à l’échelle nationale et internationale soulève de

nombreux problèmes méthodologiques et rencontre de nombreux obstacles. Le but de la thèse est double. Dans

une première partie, une description et une analyse du mécanisme REDD+ est réalisée. Dans une deuxième

partie, de nouvelles perspectives concernant le design du mécanisme REDD+ et sur sa mise en œuvre sont

offertes, en se basant sur trois essais rédigés en format article. Le premier essai propose un modèle de théorie des

jeux reflétant le processus de négociation Nord-Sud du mécanisme REDD. Il étudie les conditions régissant le

partage de fonds entre les pays en développement et leurs impacts sur l’efficacité du système d’incitations. Le

deuxième essai utilise un modèle en économétrie de panel pour différencier des comportements nationaux de

déforestation selon la dotation relative en forêts de chaque pays. Le troisième essai s’intéresse à la mise en œuvre

du mécanisme REDD+, en comparant les résultats de deux programmes de paiement pour services

environnementaux pour deux types de gouvernements. Le modèle développé dans cet essai est ensuite testé dans

le contexte de la déforestation en Indonésie, grâce à une base de données fournie par l’ONG Conservation

International.

Mots-clés : déforestation tropicale, changement climatique, REDD+, théorie des jeux, économétrie,

économie publique, paiements pour services environnementaux.

International economic instruments for the reduction of tropical deforestation: the example of

REDD+ (Reducing Emissions from Deforestation and forest Degradation).

Abstract: Curbing deforestation in tropical countries is one of the main current challenges for international

community in the United Nations Framework Convention on Climate Change. Indeed, deforestation is the

second leading cause of greenhouse gas emissions just behind industrial emissions. Since 2005, a new instrument

to slow down CO2 emissions from tropical deforestation is under negotiations at the UNFCCC. This mechanism,

called REDD+ (for Reducing Emissions from Deforestation and forest Degradation) is supported by a simple

principle: it consists to reward developing countries for their efforts to avoid deforestation. However, the

national and international implementations of REDD+ raise lot of methodological questions and meet several

hurdles. The aims of the thesis are twofold. First, it proposes a description and an analysis of the REDD+

mechanism. Second, it is composed by three essays, which raise some questions about REDD+ design and

implementation, in order to offer new perspectives on this mechanism. The first essay develops a game-theoretic

bargaining model, simulating the on-going negotiation process over the REDD+ mechanism. It shows that the

conditions under which developing countries are left to bargain over the allocation of the global forest fund may

lead to an ineffective system of incentives. The second essay used a panel data analysis to reveal contrasted

deforestation behaviors of tropical countries according to their relative endowment in forest cover. The aim of

the third essay offered an illustration of REDD+ implementation, comparing the outcomes in terms of avoided

deforestation and utility of two payments for environmental services designs for two types of governments. The

model developed in this article is applied in the Indonesian context of deforestation, thanks to a database

supplied by the NGO Conservation International.

Key words: tropical deforestation, climate change, REDD+, game theory, econometrics, public economies,

payments for environmental services