<b>ASSOCIATIONS BETWEEN ATTRIBUTES OF NITISOLS AND THE CLIMATE OF THE SOUTHERN COAST OF PERNAMBUCO</b>

NEVES, LAÉRCIO VIEIRA DE MELO WANDERLEY; SANTOS, JEAN CHEYSON BARROS DOS; SOUZA JÚNIOR, VALDOMIRO SEVERINO DE; CORRÊA, MARCELO METRI; ARAÚJO FILHO, JOSÉ COELHO DE

doi:10.1590/1983-21252018v31n130rc

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Nota Técnica • Rev. Caatinga 31 (01) • Jan-Mar 2018 • https://doi.org/10.1590/1983-21252018v31n130rc copy

ASSOCIATIONS BETWEEN ATTRIBUTES OF NITISOLS AND THE CLIMATE OF THE SOUTHERN COAST OF PERNAMBUCO ¹ 1 Extracted from the first author's Master's dissertation.

ASSOCIAÇÕES ENTRE OS ATRIBUTOS DE NITOSSOLOS E O CLIMA DA COSTA SUL DE PERNAMBUCO

Authorship SCIMAGO INSTITUTIONS RANKINGS

ABSTRACT

Nitisols are livelihood sources of agricultural and socio-economic development in several underdeveloped countries worldwide, including Brazil. Brazilian Nitisols are usually associated with basaltic rocks found in the Southern and Southeastern regions of the country. However, Nitisols derived from basalt also occur on the southern coast of Pernambuco state, a region under full urban, agricultural, and industrial development. Aiming to understand the relationship between climate and attributes of Nitisols from the southern coast of Pernambuco, we performed morphological descriptions, physical and chemical analyzes, iron selective extraction, and soil mineralogy (sand, silt, and clay) for three basaltic soil profiles along a land slope. The results suggest a strong weathering of the profiles due to climate conditions, besides a great loss of basic cations and xanthization process, resulting in the natural genesis of acric Nitisols with yellowish coloration, which has not been yet cataloged for this soil order in the Brazilian taxonomic system. In addition, there is a variation for physical attributes of Nitisols along the slope.

Keywords:
Tropical soils; Soil-environment relationship; Xanthization process.

Horizon	Depth (m)	Texture	Color	Cerosity		Structure
					Grade	Size	Shape
				P1 (Upper third)
Ap	0 – 0.2	Clay	7.5YR 3/3	Absent	Mod	Sm; Med	Gr e Bl Sub
BA	0.2 – 0.5	Vr clayey	7.5YR 4/4	Mod; Abun	Mod	Vr Sm; Sm	Bl Sub; Ang
Bt1	0.5 – 0.9	Vr clayey	7.5YR 4/4	Mod; Abun	Mod	Vr Sm; Sm	Bl Sub; Ang
Bt2	0.9 – 1.6	Vr clayey	7.5YR 4/6	Mod; Abun	Mod	Sm; Med	Bl Sub; Ang
Bt3	1.6 – 2.0+	Vr clayey	7.5YR 4/6	Mod; Abun	Mod	Sm; Med	Bl Sub; Ang
				P2 (Middle third)
Ap	0 – 0.2	Clay	10YR 3/4	Absent	Mod	Vr Sm; Sm	Gr; Bl Sub
BA	0.2 – 0.5	Vr clayey	10YR 4/4	Mod; Abun	Mod	Vr Sm; Sm	Bl Sub; Ang
Bt1	0.5 – 1.0	Vr clayey	10YR 4/4	Mod; Abun	Mod	Vr Sm; Sm	Bl Sub; Ang
Bt2	1.0 – 1.7	Vr clayey	10YR 4/4	Mod; Com	Mod	Vr Sm; Sm	Bl Sub
Bt3	1.7 – 2.0+	Vr clayey	10YR 4/4	Mod; Com	Mod	Vr Sm; Sm	Bl Sub
				P3 (Lower third)
Ap	0 – 0.1	Clay	10YR 3/3	Absent	Mod	Vr Sm; Sm	Gr
AB	0.1 –0.2	Vr clayey	10YR 4/4	Mod; Abun	Mod	Sm; Med	Bl Sub
BA	0.2 – 0.4	Vr clayey	10YR 4/4	Mod; Abun	Mod	Sm; Med	Bl Sub; Ang
Bt1	0.4 – 0.9	Vr clayey	10YR 4/4	Mod; Abun	Mod	Sm; Med	Bl Sub
Bt2	0.9 – 1.5	Vr clayey	10YR 4/4	Mod; Abun	Mod	Sm; Med	Bl Sub
Bt3	1.5 – 2.0⁺	Vr clayey	10YR 4/4	Mod; Com	Mod	Sm; Med	Bl Sub

		Granulometry			Density		pH			S	Al³⁺	CEC	m	TOC
Hor	Sand	Silt	Clay	DF	Soil	particle	H₂ O	KCl	ΔpH
		(g kg-1)		%	(g cm^-3 )						(cmolc kg-1)		%	g kg^-1
						P1 (Upper third)
Ap	305	198	497	18	1.40	2.82	5.6	5.0	-0.6	0.6	0.05	6.2	8	12.5
BA	168	210	622	79	1.17	2.86	5.6	5.5	-0.1	0.2	0.05	3.9	20	9.7
Bt1	199	175	626	79	1.22	2.85	5.4	5.5	0.1	0.2	0.05	3.9	20	7.0
Bt2	186	139	675	81	1.21	2.81	5.3	5.4	0.1	0.2	0.05	3.5	23	5.8
Bt3	139	212	649	81	1.18	2.91	5.3	5.3	0.0	0.2	0.05	4.1	23	4.5
						P2 (Middle third)
Ap	177	245	578	31	1.12	2.93	4.8	4.3	-0.5	0.4	0.3	9.2	41	21.5
BA	116	280	604	79	1.13	2.95	5.2	5.2	0.0	0.2	0.1	4.4	35	9.9
Bt1	129	223	648	81	1.07	2.93	5.2	5.4	0.2	0.2	0.05	3.5	24	7.1
Bt2	129	231	640	81	1.13	2.95	5.3	5.6	0.3	0.2	0.05	3.6	20	6.3
Bt3	310	62	628	81	1.12	2.87	4.9	5.0	0.1	0.1	0.1	4.0	63	6.2
						P3 (Lower third)
Ap	119	303	578	39	1.05	2.74	5.7	5.1	-0.6	1.1	0.15	8.6	12	30.3
AB	106	261	633	79	1.17	2.81	5.0	4.6	-0.4	0.5	0.15	7.9	24	22.7
BA	78	304	618	79	1.16	2.80	5.5	5.4	-0.1	0.4	0.05	5.7	11	11.6
Bt1	78	273	649	81	1.03	2.86	5.2	5.3	0.1	0.3	0.05	5.2	13	8.8
Bt2	83	270	647	81	1.07	2.95	5.3	5.3	0.0	0.3	0.05	6.0	14	6.5
Bt3	82	271	647	81	1.16	2.93	5.0	4.6	-0.4	0.1	0.35	6.7	81	5.6

Profile	Sand	Silt	Clay ⁽¹⁾	Clay ⁽²⁾	Clay ⁽³⁾
P1 (Upper third)	Qz, Fd	Qz,Fd, Mt, Kt, Gb, Gt	Kt, Gb, Gt, Hm	Kt	Gt, Hm
P2 (Middle third)	Qz, Fd	Qz, Fd, Mt, Kt, Gb, Gt	Kt, Gb, Gt, Hm	Kt	Gt, Hm
P3 (Lower third)	Qz, Fd	Qz, Fd, Mt, Kt, Gb, Gt	Kt, Gb, Gt, Hm	Kt	Gt, Hm

Hor	Fe_d	Fe_o	Fe_t	Fe_o /Fe_d	Fe_d /Fe_t	(Gt/Gt+Hm) ⁽¹⁾	Ct ⁽²⁾	Gb⁽²⁾	molecular	relationships
		g kg-1					%		Ki	Kr
					P1 (Upper third)
Ap	127.60	2.35	170.13	0.02	0.75	0.62	88	3	1.3	0.8
Bt1	196.60	1.50	211.40	0.01	0.93	0.81	83	Nd	1.9	1.1
Bt3	182.82	1.09	192.44	0.01	0.95	0.76	76	6	1.7	1.1
					P2 (Middle third)
Ap	174.42	2.73	195.98	0.02	0.89	0.82	82	8	1.5	0.9
Bt1	203.18	1.67	207.33	0.01	0.98	0.81	82	Nd	1.6	1.0
Bt3	190.25	1.33	206.79	0.01	0.92	0.62	81	2	1.5	0.9
					P3 (Lower third)
Ap	169.35	2.34	206.52	0.01	0.82	0.77	87	Nd	1.8	1.0
Bt1	186.19	1.3	211.58	0.01	0.88	0.79	85	Nd	1.8	1.1
Bt3	172.87	1.36	254.22	0.01	0.68	0.80	84	Nd	1.6	0.9

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[1] ^* Corresponding author: valdomiro.souzajunior@ufrpe.br

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ASSOCIATIONS BETWEEN ATTRIBUTES OF NITISOLS AND THE CLIMATE OF THE SOUTHERN COAST OF PERNAMBUCO 1 1 Extracted from the first author's Master's dissertation.

ASSOCIAÇÕES ENTRE OS ATRIBUTOS DE NITOSSOLOS E O CLIMA DA COSTA SUL DE PERNAMBUCO

ABSTRACT

ASSOCIATIONS BETWEEN ATTRIBUTES OF NITISOLS AND THE CLIMATE OF THE SOUTHERN COAST OF PERNAMBUCO ¹ 1 Extracted from the first author's Master's dissertation.