Influências climáticas na produção de serapilheira em um cerradão em Prata �? MG

Biotemas

Thiago Mendes Siqueira³  Talita Moura Franco¹  Diego Gonçalves Silva³  Marcelo Henrique Ongaro Pinheiro² 

[1] Universidade Federal de Uberlândia (graduada);Universidade Federal de Uberlândia;Universidade Federal de Uberlândia (graduado)

关键词: Aporte de folhas;    Domínio cerrado;    Formação savânica;    Microclima;   

DOI  :  

学科分类：生物科学（综合）

来源: Universidade Federal de Santa Catarina * Centro de Ciencias Biologicas

【 摘 要 】

http://dx.doi.org/10.5007/2175-7925.2016v29n2p7 The objective of this study was to analyze the influence of climate on litterfall production, for a year, in a small fragment of forested savannah, in Minas Gerais, Brazil. Twenty collectors (0.25 m 2 ) arranged in a row were used. The total litter production was 7.5 t.ha -1 .year -1 , comprising leaves, branches and fertile structures as the fractions. The leaf fraction contributed 67% of the annual litter input. Pearson’s correlation coefficient ( r ) indicated the influence of the climatic variables precipitation and mean and minimum temperature in the accumulation of this fraction. The analysis also resulted in a significantrvalue between branches and average wind velocity, while the fertile structure fraction was influenced by rainfall and average maximum and minimum temperature. Vegetation characteristics may have interfered with the results. Phytosociological and nutrient cycling studies should be conducted to test the proposed hypothesis.

【 授权许可】

Unknown