Impacts of a reduction in precipitation in the aerial biomass of the Amazon Forest

被引：4
作者：
das Chagas, Glayson F. B. [1 ]
da Silva, Vicente de P. R. [1 ]
da Costa, Antonio C. L. [2 ]
Dantas, Vanessa de A. [1 ]
机构：
[1] DCA UFCG, BR-58429140 Campina Grande, PB, Brazil
[2] DM UFPA, BR-66075110 Belem, Para, Brazil
来源：
REVISTA BRASILEIRA DE ENGENHARIA AGRICOLA E AMBIENTAL | 2012年 / 16卷 / 01期
关键词：
Amazon; LBA; basal area; mortality of trees; precipitation; DEFORESTATION; CLIMATE;
D O I：
10.1590/S1415-43662012000100010
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
This study was conducted in Caxiuana National Forest, Para, Brazil, to analyze the effects of decrease in rainfall on biomass, tree mortality and basal area of tropical rainforest within ESECAFLOR Project (LBA). Two experimental sectors with one hectare each of natural forest were utilized. Plot A was maintained under natural conditions of climate and Plot B with rainfall exclusion of about 90%. The growth parameters presented in this study refer to monthly data during the experimental period from 2005 to 2009 for the two experimental plots. Results showed that a decrease in rainfall affected significantly all tree growth parameters over forest. The main evidence for this is that rainfall exclusion provides a reduction in basal area especially with Diameter at Breast Height more than 10 cm. Also, an increase in both tree mortality rate and consequently loss in plant biomass are larger in forest area with rainfall exclusion than under natural conditions of climate.
引用
收藏
页码：72 / 79
页数：8
相关论文
共 22 条
[1]   Variation in wood density determines spatial patterns in Amazonian forest biomass [J].
Baker, TR ;
Phillips, OL ;
Malhi, Y ;
Almeida, S ;
Arroyo, L ;
Di Fiore, A ;
Erwin, T ;
Killeen, TJ ;
Laurance, SG ;
Laurance, WF ;
Lewis, SL ;
Lloyd, J ;
Monteagudo, A ;
Neill, DA ;
Patiño, S ;
Pitman, NCA ;
Silva, JNM ;
Martínez, RV .
GLOBAL CHANGE BIOLOGY, 2004, 10 (05) :545-562
[2]   Forcings and feedbacks by land ecosystem changes on climate change [J].
Betts, R. A. .
JOURNAL DE PHYSIQUE IV, 2006, 139 :119-142
[3]  
Costa J.P.R., 2003, CAXIUANA POPULACOES
[4]  
Costa MH, 2000, J CLIMATE, V13, P18, DOI 10.1175/1520-0442(2000)013<0018:CEODAD>2.0.CO
[5]  
2
[6]  
Costa R.F., 2003, CCTE005 MUS PAR EM G
[7]  
Costa Rafael F. da, 2007, Rev. bras. eng. agríc. ambient., V11, P180, DOI 10.1590/S1415-43662007000200008
[8]   Variation in aboveground tree live biomass in a central Amazonian Forest:: Effects of soil and topography [J].
de Castilho, Carolina V. ;
Magnusson, William E. ;
de Araujo, R. Nazare O. ;
Luizao, Regina C. C. ;
Lima, Albertina P. ;
Higuchi, Niro .
FOREST ECOLOGY AND MANAGEMENT, 2006, 234 (1-3) :85-96
[9]  
de Silva V.P.R., 2009, SCI HORTICULTURAE, V1, P67
[10]   The response of an Eastern Amazonian rain forest to drought stress: results and modelling analyses from a throughfall exclusion experiment [J].
Fisher, R. A. ;
Williams, M. ;
Da Costa, A. Lola ;
Malhi, Y. ;
Da Costa, R. F. ;
Almeida, S. ;
Meir, P. .
GLOBAL CHANGE BIOLOGY, 2007, 13 (11) :2361-2378
123