干旱区生态环境知识资源中心(Arid): Carbon and nitrogen stocks of soils under different land uses in Pernambuco state, Brazil

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DOI	10.1016/j.geodrs.2019.e00205
	Carbon and nitrogen stocks of soils under different land uses in Pernambuco state, Brazil
	Santana, Monica da Silva 1; de Sa Barretto Sampaio, Everardo Valadares 1; Giongo, Vanderlise 2; Cezar Menezes, Romulo Simoes 1; de Jesus, Kennedy Nascimento 1; Gomes Marinho de Albuquerque, Eliza Rosario 3; do Nascimento, Diego Marcelino 1; Corneel Pareyn, Frans Germain 4; Ferreira Cunha, Tony Jarbas 2; Bezerra Sampaio, Raquel Menezes 5; Primo, Dario Costa 1
通讯作者	Santana, Monica da Silva
来源期刊	GEODERMA REGIONAL
ISSN	2352-0094
出版年	2019
卷号	16
英文摘要	Acrisols, Ferralsols, Leptosols and Planosols were sampled in layers down to I m under dense caatinga, open caatinga, pasture and agriculture. Agricultural Leptosols and Planosols had the lowest C and N concentrations among the land uses, although in some cases differences were not statistically significant. On average, conversion of dense caatinga to agriculture reduced C stocks from 63 to 47 Mg ha(-1). Acrisols had the highest concentrations of C and N. and Planosols had the lowest concentrations and stocks. Conversion to pasture did not reduce stocks, but open caatinga also had lower C stocks (50 Mg ha(-1)) than dense caatinga. Nitrogen stocks did not differ among land uses, implying that losses are greater for C than for N. Despite the fact that the western portion of Pernambuco state covers 3% of the Brazilian semi-arid area, it stocks about 020 Pg of C (and 0.019 Pg of N), which represents 2% of the total estimated soil C stock in the semiarid region (8.9 Pg). Therefore, the stock per hectare in the west portion of Pernambuco is about one-third smaller than the stock per hectare in the whole Brazilian semiarid region, probably a consequence of the lower average C concentration in the 20 an superficial layer, a higher proportion of agricultural fields and shallower depths of some soil classes in western Pernambuco than in the whole semiarid region. (C) 2019 Elsevier B.V. All rights reserved.
英文关键词	Semiarid Acrisols Leptosols Ferralsols Planosols Soil C and N stocks Soil depth Land use change
类型	Article
语种	英语
国家	Brazil
收录类别	SCI-E
WOS记录号	WOS:000468837700008
WOS关键词	ORGANIC-CARBON ; SEMIARID REGION ; SEQUESTRATION ; ECOSYSTEMS ; CAATINGA ; PASTURE ; MATTER ; CULTIVATION ; FRACTIONS ; TURNOVER
WOS类目	Soil Science
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/215941
作者单位	1.Univ Fed Pernambuco, Dept Energia Nucl, BR-50740540 Recife, PE, Brazil; 2.Embrapa Semiarido, BR-56302970 Petrolina, PE, Brazil; 3.Univ Fed Rural Pernambuco, Dept Biol, BR-52171900 Recife, PE, Brazil; 4.Assoc Plantas Nordeste, BR-50731280 Recife, PE, Brazil; 5.Univ Fed Rio Grande do Norte, Escola Ciencias & Tecnol, BR-59078970 Natal, RN, Brazil
推荐引用方式 GB/T 7714	Santana, Monica da Silva,de Sa Barretto Sampaio, Everardo Valadares,Giongo, Vanderlise,et al. Carbon and nitrogen stocks of soils under different land uses in Pernambuco state, Brazil[J],2019,16.
APA	Santana, Monica da Silva.,de Sa Barretto Sampaio, Everardo Valadares.,Giongo, Vanderlise.,Cezar Menezes, Romulo Simoes.,de Jesus, Kennedy Nascimento.,...&Primo, Dario Costa.(2019).Carbon and nitrogen stocks of soils under different land uses in Pernambuco state, Brazil.GEODERMA REGIONAL,16.
MLA	Santana, Monica da Silva,et al."Carbon and nitrogen stocks of soils under different land uses in Pernambuco state, Brazil".GEODERMA REGIONAL 16(2019).