Open Composição florística, e influência dos solos na estrutura da vegetação em uma área de caatinga no semiárido paraibano

(1)

UNIVERSIDADE FEDERAL DA PARAÍBA

CENTRO DE CIÊNCIAS AGRÁRIAS

PROGRAMA DE PÓS-GRADUAÇÃO EM AGRONOMIA

C

OMPOSIÇÃO

F

LORÍSTICA,

F

ITOSSOCIOLOGIA E

I

NFLUÊNCIA

DOS SOLOS NA ESTRUTURA DA VEGETAÇÃO EM UMA ÁREA

DE

C

AATINGA NO

S

EMI-ÁRIDO

P

ARAIBANO

Lúcio Valério Coutinho de Araújo

Areia – Paraíba

Brasil

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UNIVERSIDADE FEDERAL DA PARAÍBA

CENTRO DE CIÊNCIAS AGRÁRIAS

PROGRAMA DE PÓS-GRADUAÇÃO EM AGRONOMIA

COMPOSIÇÃO FLORÍSTICA, FITOSSOCIOLOGIA E INFLUÊNCIA

DOS

S

OLOS NA

E

STRUTURA DA

V

EGETAÇÃO EM UMA

Á

REA

DE CAATINGA NO SEMI-ÁRIDO PARAIBANO

Lúcio Valério Coutinho de Araújo

Orientador:

Prof. Jacob Silva Souto, D.Sc.

Tese apresentada à Universidade Federal da Paraíba, Centro de Ciências Agrárias, como parte das exigências à obtenção do Título de Doutor em Agronomia, Área de Concentração Ecologia Vegetal e Meio Ambiente.

Areia – Paraíba

Brasil

(3)

COMPOSIÇÃO FLORÍSTICA, FITOSSOCIOLOGIA E INFLUÊNCIA DOS

SOLOS NA ESTRUTURA DA VEGETAÇÃO EM UMA ÁREA DE CAATINGA

NO SEMI-ÁRIDO PARAIBANO

Tese aprovada pela Comissão em 15 de fevereiro de 2007.

B

ANCA

E

XAMINADORA

Prof. JACOB SILVA SOUTO, D. Sc.

Unidade Acadêmica de Engenharia Florestal – UFCG

Prof. EVERARDO V. S. B. SAMPAIO, Ph. D. Departamento de Energia Nuclear – UFPE

Prof. RÔMULO SIMÕES CEZAR MENEZES, Ph. D. Departamento de Energia Nuclear – UFPE

Prof. DJAIL SANTOS, Ph. D.

Departamento de Solos e Engenharia Rural – CCA/UFPB

Prof. LEONARDO PESSOA FELIX, D. Sc. Departamento de Fitotecnia – CCA/UFPB

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0,0 2,0 4,0 6,0 8,0 10,0 12,0 14,0 16,0 18,0 20,0

INFERIOR INTERMEDIÁRIO SUPERIOR

Níveis de altitude

P ( m d m 3 ) 0,0 0,1 0,2 0,3 0,4 0,5

K + ( cm o lc d m 3) 0,0 1,0 2,0 3,0 4,0 5,0 6,0 7,0

C

a

+

2 (

cm o l c d m 3 ) 0,0 0,2 0,4 0,6 0,8 1,0 1,2 1,4 1,6 1,8

M

g

+

3 (

cm o lc d m 3) b a

(100)

@' D A J O ! !

; +

5

5 +

A- 9 ; )* @ A ( @ A 9 @ A :< @ A

&

5 #

< ! 5

5

;

4

O

@$ ) &I ,VVCH *<($ N 3..3A

0,0 1,0 2,0 3,0 4,0 5,0 6,0 7,0 8,0

S B ( cm o l c d m -3) 8,0 8,5 9,0 9,5 10,0 10,5 11,0

INFERIOR INTERMEDIÁRIO SUPERIOR Níveis de altitude

C T C ( cm o lc d m -3) 0 10 20 30 40 50 60 70 80 90 100

V ( % ) 0,0 5,0 10,0 15,0 20,0 25,0 30,0 35,0

M O ( g k g -1 )

a b

(101)

3 5 +! ,!, B' #$'/! (

< + #

" 6