Soil and phytosociological characterization of an area with predominance of arnica (Lychnophora pohlii sch. bip.)

Revista Brasileira de Ciência do Solo

André Rodrigues Da Cunha Gianotti²  Maria José Hatem De Souza¹  Israel Marinho Pereira¹  Evandro Luiz Mendonça Machado¹  Artur Duarte Vieira¹  Mariana Rodrigues Magalhães¹ 

[1] ,UFVJM Faculdade de Ciências Agrárias Dept. of Forest EngineeringDiamantina MG

关键词: rocky grassland;    savanna;    forest soils;    canonical correspondence analysis;    campo rupestre;    savana;    solos florestais;    análise de correspondência canônica;   

DOI  :  10.1590/S0100-06832013000300002

来源: SciELO

【 摘 要 】

Lychnophora pohlii Sch. Bip. (Asteraceae), known as "Arnica mineira", is widely used in folk medicine and very abundant in the altitude vegetation of rocky grassland. The aim of this work was to study the density of this species and its relationship with soil parameters in rocky grassland in Diamantina, in the Upper Jequitinhonha region, Minas Gerais. Ten contiguous 20 x 50 m plots were marked (total sampled area 10,000 m²) on the campus Juscelino Kubitschek of the Federal University of Jequitinhonha and Mucuri Valleys (UFVJM). The plants in these plots were evaluated for frequency, dominance and density. The relationship between the density of this species with nine soil physical and chemical properties was analyzed by means of canonical correspondence analysis (CCA). The highest plant abundance (I) of the species Lychnophora pohlii Sch. Bip. was found in the vegetation sampling areas: plot 6 with 255 plants, plot 7 with 173, plot 8 with 189, plot 9 with 159, and plot 1 with 151 plants. In these areas, the floristic soil characteristics were similar, resulting in spatial proximity in the ACC diagrams. The density of Lychnophora pohlii was higher in plots with higher pH, P-rem and base saturation, the variables most strongly correlated with the first axis of canonical correspondence analysis.

【 授权许可】

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