Produˋˋo de serapilheira e ciclagem de nutrientes de um reflorestamento e de uma floresta estacional semidecidual no sul do Brasil

作者：Pimenta; Jose Antonio; Rossi; Leopoldo Bopp; Torezan; Jose Marcelo Domingues; Cavalheiro; Alba Lucia; Bianchini; Edmilson

来源：Acta Botanica Brasilica, 2011.

DOI：10.1590/S0102-33062011000100008

• forest fragment
• litter deposition
• litter decomposition
• nutrient transfer.

the aim of this study was to evaluate litter production, n, p, k, ca and mg content, nutrient transfer, and litter decomposition rate of a seasonal semideciduous forest and an adjacent reforested area. the study was carried out in godoy forest state park (gfst), paran芍 state, brazil. estimated annual litter production was 8,212 kg.ha-1.year-1 in the forest and 5,341 kg.ha-1.year-1 in the reforested area. the forest presented higher deposition in post-drought months (september and october). in both areas nutrient concentration (g.kg-1) followed the same order in forest - ca(31.85) %26gt; n(19.94) %26gt; k(7.14) %26gt; mg(2.28) %26gt; p(0.217), and reforested area - ca(23.02) %26gt; n(19.62) %26gt; k(7.67) %26gt; mg(1.74) %26gt; p(0.302). nutrient transfer varied more during the year and the decomposition rate was lower in the reforested area.