干旱区生态环境知识资源中心(Arid): Land-use change alters the stocks of carbon, nitrogen, and phosphorus in a Haplic Cambisol in the Brazilian semi-arid region

Arid

DOI	10.1111/sum.12716
	Land-use change alters the stocks of carbon, nitrogen, and phosphorus in a Haplic Cambisol in the Brazilian semi-arid region
	Gava, Carlos Alberto Tuao; Giongo, Vanderlise; Signor, Diana; Fernandes-Junior, Paulo Ivan
通讯作者	Gava, CAT ; Fernandes-Junior, PI (corresponding author), Embrapa Semiarido, Brazilian Agr Res Corp, BR 428,Km 152, Petrolina, PE, Brazil.
来源期刊	SOIL USE AND MANAGEMENT
ISSN	0266-0032
EISSN	1475-2743
出版年	2021-03
英文摘要	Land-use change (LUC) can impact soil quality. In semi-arid areas of Brazil, impacts of LUC need to be understood for better soil management. This study evaluated the impact of LUC on soil organic carbon (SOC), nitrogen (N), and phosphorus (P) distributions through the soil profile and stocks of a Haplic-Cambisol in the Brazilian Semi-arid region. Three land-use systems (LUS) were investigated: agricultural management (30 years), regeneration under controlled grazing (25 years) after 5 years arable management, and native dry forest. Soil contents of P, total C, total N, and N fractions were used to calculate stocks and their stoichiometric ratios for layers 0-5, 5-10, 10-20, and 20-40 cm. Data from these LUS were compared using Kruskal-Wallis non-parametric tests. Changes to soil microbial biomass reflected the substantially reduced SOC concentration and stock in managed soils compared with that of the natural dry forest area. Total N stock was not affected by LUC, although increases in nitrate and ammonium offset a significantly reduced organic N fraction in the agricultural area. The largest P stock was found in agricultural land, followed by the grazed fallow regeneration site. LUC significantly influenced the stoichiometric ratio of C, N, and P, with the change from Caatinga to agriculture affecting the equilibrium between organic residues' input and mineralization. LUC resulted in significant changes to C, N, and P stocks, which did not recover to the original values, even after 25 years of regeneration under controlled grazing.
英文关键词	drylands soil carbon soil nitrogen soil phosphorus
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000629304900001
WOS关键词	SOIL MICROBIAL ACTIVITY ; ORGANIC-MATTER ; USE EFFICIENCY ; STOICHIOMETRY ; PROTECTION ; MECHANISMS ; 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/2XILL650/352457
作者单位	[Gava, Carlos Alberto Tuao; Giongo, Vanderlise; Signor, Diana; Fernandes-Junior, Paulo Ivan] Embrapa Semiarido, Brazilian Agr Res Corp, BR 428,Km 152, Petrolina, PE, Brazil
推荐引用方式 GB/T 7714	Gava, Carlos Alberto Tuao,Giongo, Vanderlise,Signor, Diana,et al. Land-use change alters the stocks of carbon, nitrogen, and phosphorus in a Haplic Cambisol in the Brazilian semi-arid region[J],2021.
APA	Gava, Carlos Alberto Tuao,Giongo, Vanderlise,Signor, Diana,&Fernandes-Junior, Paulo Ivan.(2021).Land-use change alters the stocks of carbon, nitrogen, and phosphorus in a Haplic Cambisol in the Brazilian semi-arid region.SOIL USE AND MANAGEMENT.
MLA	Gava, Carlos Alberto Tuao,et al."Land-use change alters the stocks of carbon, nitrogen, and phosphorus in a Haplic Cambisol in the Brazilian semi-arid region".SOIL USE AND MANAGEMENT (2021).