首页|Plant growth and metabolism of exotic and native Crotalaria species for mine land rehabilitation in the Amazon

Plant growth and metabolism of exotic and native Crotalaria species for mine land rehabilitation in the Amazon

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Despite its enormous benefits,mining is respon-sible for intense changes to vegetation and soil properties.Thus,after extraction,it is necessary to rehabilitate the mined areas,creating better conditions for the establishment of plant species which is challenging.This study evaluated mineral and organic fertilization on the growth,and carbon and nitrogen(N)metabolism of two Crotalaria species[Cro-talaria spectabilis(exotic species)and Crotalaria maypu-rensis(native species from Carajás Mineral Province(CMP)]established on a waste pile from an iron mine in CMP.A control(without fertilizer application)and six fertilization mixtures were tested(i=NPK;ii=NPK+micronutrients;iii=NPK+micronutrients+organic compost;iv=PK;v=PK+micronutrients;vi=PK+micronutrients+organic compost).Fertilization contributed to increased growth of both species,and treatments with NPK and micronutrients had the best results(up to 257％cf.controls),while organic fertilization did not show differences.Exotic Crotalaria had a greater number of nodules,higher nodule dry mass,chlorophyll a and b contents and showed free ammonium as the predominant N form,reflecting greater increments in biomass compared to native species.Although having lower growth,the use of this native species in the rehabilitation of mining areas should be considered,mainly because it has good development and meets current government legislation as an opportunity to restore local biodiversity.

Biological nitrogen fixationMiningNitrogen metabolismPlant nutrition

Hemelyn Soares das Chagas、Rafael Silva Guedes、Markus Gastauer、Paula Godinho Ribeiro、Allan Klynger da Silva Lobato、Cecílio Frois Caldeira、Fabrício William de ávila、André Rodrigues dos Reis、Silvio Junio Ramos

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Instituto Tecnológico Vale,Rua Boaventura da Silva,955,Belém,PA 66055-090,Brazil

Universidade Federal do Sul e Sudeste do Pará,Xinguara,PA,Brazil

Núcleo de Pesquisa Vegetal Básica e Aplicada,Universidade Federal Rural da Amazônia,Paragominas,PA,Brazil

Departamento de Engenharia Florestal,Universidade Estadual do Centro-Oeste/UNICENTRO,Irati,PR,Brazil

School of Sciences and Engineering,São Paulo State University(UNESP),Tupã,SP.CEP 17602-496,Brazil

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Conselho Nacional de Desenvolvimento Científico e Tecnológico(CNPq)Instituto Tecnológico Vale(ITV)Funda??o de Desenvolvimento da Pesquisa(FUNDEP)Funda??o de Amparo e Desenvolvimento da Pesquisa(FADESP)

2024

10.1007/s11676-023-01676-5

林业研究(英文版)
东北林业大学,中国生态学学会

林业研究(英文版)

CSTPCDEI
影响因子：0.365
ISSN：1007-662X
年,卷(期)：2024.35(1)
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