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Improved Model for Semideciduous Seasonal ForestProduction of Leaves and Deciduousness
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作者 Thomaz Costa 《Journal of Environmental Science and Engineering(A)》 2017年第12期594-605,共12页
The climate,mainly the water availability and temperature,drives the renewal of biomass inseasonal forest ecosystem,and the greenness and leaf area of its canopy are responsive climate variations.This study verified ... The climate,mainly the water availability and temperature,drives the renewal of biomass inseasonal forest ecosystem,and the greenness and leaf area of its canopy are responsive climate variations.This study verified models to explain the phenomenon of leaf production and deciduousness by time,with LAI(Leaf Area Index),NDVI(Normalized Difference VegetationIndex)and climate variables,on period 2011-2016. The data were obtained in satellite images and in plots installed at forestmonitoring sites,visited monthly.The analysis incorporated the water balance.Three equations were compared,two alreadypublished and the equation that was adjusted in this work.The model was improved and validated with new variables and data.It is possible to estimate the fall and renew of leaves biomass in semideciduous forests with reasonable precision. 展开更多
关键词 Ecosystem dynamics climate variables LAI NDVI.
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