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3 ,31*,$%&' &' ()* ++,-./0 ; O9;? ;7 \;+ 2; >* /;c ^)?+ DG 10 85C 45 /; ;? 9;[C EC > 2.p>9 \? ; n9; 85;C \;? * 2F? 8;9: /; *; *;5 >4A9G/ * + 2; / 9. /UG A /C C 5^ 9^;?9^ ;)7 ; >;+ ;? *;5e 2)N. C > * *5=: >4n m 9;5 *; \;+ 2; ); UC9/ ;+ *9;5 BS; / /G9. \? /c ;;+ >9;;. ;;+ 2;; * *;;5>;;.(Anonymous, 2009) *5 ;+ s9;w BS^ 85 : *5/?9^ 7 /)q^ *5/5 q^, \+ 95 PA + / ac U09);+ D;0S/; ;. ;+. >$);+ * ; *;CEFG S+ *bn T 5F;[A #01 / G9. E0/.9 P;Q)? * ; ;G E09);+ 9;5 PA ; R+ *5/?9^ n;+ 2.? 9G9 C * lu)q ;N ; ;+ >4; ;+ /;01 2; /) )+ 2 ^ >4+ *5/?9^.9 E.2 8;9: 1386 ) * +, + * PA *;5 ): ;7 4). )7 *;A o; # z. /UG 95. A >F) (1386 ;1329) /0+ 58 ; ;M 4; EU. /ST. Q)+ /;c /);q^ \;+ 57 ;+9) 1386 \+.4 ; 4;) 95 PA *5 ): + * 2;65 ;UW E;9h 2 ;.p D0S/ B 1386\;+ ;. ; p;uw 2;. * ;.4 >$)+ >r A 2. *5w7 ;)7 ;1W 4 \9uO 9V/ Saeednia, ) > ;; ;;)5 >4;;P;;Q)? n9;$? 9h * + Y)? n+.(2006 ;;. ;; ;;G 1385 \;;+ 2L;; ;+ >9; ;$? 7/797/520 (/;?^ 730 ; 2; O;.(Anonymous, 2007) 12/6 4;O S+ *bn D? +.+ )9UC 8S;N ; ) 15 / ) /C + ).(Anonymous, 2007) 4 ; ; ;+, D >4aT? #01 #9;%/; _.4;h =4;? ; ;)7 ^4;? /;?9^ 4;` ; /?9^ o * 5F[A #01 ; };. 9C..+ x7 ZG o /; /);q^ *;59 : /;C *44; *5 +, ;S^ >A ; /; *; *5 >4A 9G /; 97 D01 (2007) Saeedi.+ >4[? [) ;` 2; 4;C : ps;?a ;~C 0N Dc Popolusdeltoides,P. nigra, P. alba 9;%D?9^ /;)7 : ;7 P97 S7.euramericanaP );. ;7 P. albad?9^/c+ > [? ; 4;C : ;0N S; S;7 EuN E /;C*9/ F D?9^ /+/? *.w7 S; EW4;O /; 9;7 ;[ ;0N h +/ /;?9^ 2 *{ c 45[? 2.4?+.;+ >9; 8 \9uN 7 n * + / ); EuN ps?a 2 0N ;UC9;/; /;C;+ > [? 8 EuN E / c.euramericanap P. deltoids *5/?9^ D;?9^ /;? >4 *.{ * + /; ;c /;C*9;/; 4? p. nigra p. alba P. P.deltoids) /;?9^ 2; >;4$;+ * ;+ >;* ;[.{; (euramericana ;+/ c 8 EuN E /);L P. nigra, P. alba D?9^./)5A ;c 2; >;;[. /C*9/ + >4.+ >*.{ 95 ; B; *5/? ) s. ;C 9;$? 9;[C P m *9+ / */? )4 -[

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8 116 o; ; 9; 4;c 2; )C + >4 3 ; 9; 9;G9 >4;\ )C 3 /;` ^.;4? 9;G o;r909sn l;m F 9;h ;+ * ;.>+ B 5F[A B /;% h /; 9;.;? Y;)? /;L /UG _d;;c ;;5^ 9;; /?$;;+-). p;;. E;%O.;hd 1386 * ;+ ;, >4L[7 ;+ 5/: 2. _ c. y4[? ; l;u)q ;5^ ;UC9/.4?9 >4 1W L)?r )7+ Lr909SN *5^ / /G9..;$) ;+O ; c 97 x7 ;G /;C ;+ a{ 2 ;.4;? ; 8S;N ;C 5 S+ *bn D? + 8SN D+9. *)+ $C *5/G 8SN / ~C /; /;G9. ; 2 ;.9; ;? N /G9. 4: ;)O ; C \? D. 3 % /C 5/S5 * ; ;+ a{ 9;; A 4 *5W ; ; R;+) *;5/?9^ *> 8SN ;G ; >d;h ;. 9; >$);+ ;V? 9; 8S;N ;V? *9;+ >4;3 ;% *5/S5 4; ;W *;5/;S5 85;C ; LUh >4;N *5/?9^.4 /) > 5 / C * ;+ /; 9;7 ;c /;C 85 ;: 2 9;h/; 4;?9.; 4;? [? 1386 ) ;C * ; U09);+ 44 * + /C c x9u7/ S+ *bn D ?9 >$)+ 4)5 *;;5? /;; I;;% ;; F? n;;+ ;; 4;; ; S;? ; h;)g ;1; 2; /;C ;^ #9;% ; pco 4; ; *> *c. 4: D+9. }. *;bn D;+9. *5*q^++ DO90 + >95. ^ W S+ Lr9;09SN l;m V? 3 % UC 0O */;G >4;+ )7 o 5 5/: PA ; ; y4;?/); + / EW4O * /C 1386 \+ ) 95 09) >4$5 * /C ^)?+ DG-8/41.;+ >4; /)L >^ c /) / s9;w 4 *5\+ >4aT??4 #45[ 4;. /;C 4; wq;[ * + *; ; D4;% /C )7 *5/: C 4? 5/: )[ 0 4?4 o[7 _dc 4?>4 /4;% 4;%62. /C 2 )O EG D?9^ S; 2 ;)C.4;?/)N 9 _dc 4?9 >4 + >4 /)L A >^ c /C *;58;. +,-.. 4 > A / { ;5/;6)7 ;)7 /;C + >9 1 /;G9. ;.4?>4 ` 4 C *5 20 ;NA *;A 9;? E;g ; G / /;c1 ; >4;/)C D?9^ 9?^+ * ;./ 1386 ) * + /C $^ 9. 9; )7 7 2)N 2 RG9 4?9.? 4; N 2; Lr9;09C *;59)CN + /LU * ;^/;T)? /;?9^ ?p+ ;+ ;: ;, h9;?/ 85 : 2 /C C ; ); ;m _b ) 1 *58..;+ >4; L;A 1386 ); * ;+ ;)7 /;C ;+ * ;, ;$^ 9;. /;h9t ;+ *9;? >4 5 5/6)7 T4. lm R+ /C /)q^ 1 *58. ;;)7 2;; _;;)? ;;+ >4;; >;;^ ); * ;+ ;, ; >4lM *5/6)7.9; F[` /C 4?4 +A ` 1386 ;+ 2; ;^ $^ 9. F #h / S; ;N ^; a;t? 5F;[A ; ;5/;?9^ /; #;7 R+A /C *4%

9 ,31*,$%&' &' ()* ++,-./0 REFERENCES 1. Andarz, Z.,Falah, A.,Owladi, J.,Babaie, S., Inventory of city's forests using of aeralphoto,case study: 6 zone of Tehran. MohitShenasi 35, (In persian). 2. Anonymous, Country Weather Organization, Weather data demanding Unit. (In persian). 3. Anonymous, Statistics Annals of Tehran, Tehran Municipality. Report number: 1, 230 p. (In persian). 4. Anonymous, Statistics Organization of Iran Results of general census of population and settlement of Tehran. Report number 3, 120 p. 5. Ehsani-Tabatabaie, F., Plant's stress Physiology.payamenoor university press, Tehran, 2 p. (In persian). 6. HekmatShoar, H., 1993.plant physiology in stress condition. In translating: Mei-Nard, J., Hill oukart, D(author). Tabriz, pp (In persian). 7. Heidari-Sharifabad, H., Plant and drought.research Institute of Forest and Rangelands press. Tehran,125 p. (In persian). 8. Ibrahimzade, H.,1999. Physiological of plant4 (Photosynthesis). Tehran university press, Tehran,314 p. (In persian). 9. Koochaki, E.,Soltani, A.,Azizi, M., 2003.Ecophysiological of plant. in translating:larcher, V. (author). 2nd Ed. Mashad university of Jehad, Mashad, 271 p. (In persian). 10. Lesani, H., Mojtahedi, M., Basic of plant Physiology. In translating: Mayer, Anderson, Boning and Fratian(authors).5th Ed. Tehran University Publication, Tehran, 726 p. (In persian). 11. Richter, S Frosts and Freezes, AgriLife Extension 12, Saeedi, Z., Genotype and Ecotype differentiation of Poplar Species through resistance to cold and making Lignin. Master thesis. Silviculture and forest ecology group. Gorgan university. Gorgan, Iran. 110 p. (In persian). 13. Saeednia, A., Green book of municipality (green area of city). Organization of country municipality press, Tehran, 120 p. (In persian). 14. Salehi-fard, M.,Alizadeh. D., Analysis on social and psychological aspect of green area at cities( with according city's management).management of city 6, (In persian). 15. Shaw. RH., Leaf and air temperatures under freezing conditions. Plant Physiology 29, Thakur, P.,Nayyar. H., Facing the Cold Stress by Plants in the Changing Environment: Sensing, Signaling, and Defending Mechanisms In:N.,Tuteja, S., Singh Gill, A. (Eds.), Plant Acclimation to Environmental Stress. Springer, New York. pp.1-42.