CLIMATE-TREE GROWTH RELATIONSHIPS OF Mimosa tenuiflora IN SEASONALLY DRY TROPICAL FOREST, BRAZIL

CERNE

Pareyn, Frans Germain Corneel¹  Domene, Vitor Dressano⁶  Sampaio, Everardo Valadares de Sá Barretto⁷  Braz, Evaldo Muñoz²  Alvarez, Ivan Andre³  Araújo, Elcida de Lima⁵  Gasson, Peter⁴  Mattos, Patrícia Póvoa²  Baracat, Amélia⁴ 

[1]Associação Plantas do Nordeste, Recife, Brazil$$

[2]Embrapa Florestas, Colombo, Brazil$$

[3]Embrapa Monitoramento por Satélite, Campinas, Brazil$$

[4]Royal Botanic Gardens, Richmond, United Kingdom$$

[5]Universidade Federal Rural de Pernambuco, Recife, Brazil$$

[6]Universidade Federal do Paraná, Curitiba, Brazil$$

[7]Universidade Federal de Pernambuco, Recife, Brazil$$

关键词: dendrochronology;    caatinga;    forest management.;   

DOI  :  10.1590/01047760201521011460

来源: Universidade Federal de Lavras-UFLA

【 摘 要 】

Mimosa tenuiflora is a native pioneer tree from the Caatinga used commercially as firewood due to its high calorific value. It is deciduous, its trunk does not reach large diameters and it has good regrowth capacity. This study intended to determine the annual increment in diameter of M. tenuiflora and its correlation with rainfall, as basis for fuel wood management. Disks from the stem base of M. tenuiflora trees were collected in 2008 in Sertânia and Serra Talhada, Pernambuco State, from regrowth of trees coppiced in 2003 and in Limoeiro do Norte, Ceará State, from a plantation established in 2002. The trees have well-defined annual growth rings, highly correlated with annual precipitation and are well-suited for dendrochronological investigations. Forest managers must consider the influence of previous drier years in the wood production when predicting fuel wood harvesting. The high growth correlation with the previous year's rainfall in regions where the rains start after photoperiodic stimulation indicate the necessity of understanding the growth dynamics of the species under dry forest conditions through additional ecophysiology studies.

【 授权许可】

Unknown