Root biomass allocation in the world's upland forests
Because the world's forests play a major role in regulating nutrient and carbon cycles, there is much interest in estimating their biomass. Estimates of aboveground biomass based on well-established meth-ods are relatively abundant; estimates of root biomass based on standard methods are much less common. The Goal of this work was to determine if a reliable method to estimate root biomass density for forests could be developed based on existing data from the literature.The forestry literature containing root biomass mea-surements was reviewed and summarized and relation-ships between both root biomass density (Mg ha)1) and root:shoot ratios (R/S) as dependent variables and var-ious edaphic and climatic independent variables, singly and in combination, were statistically tested. None of the tested independent variables of aboveground biomass density, latitude, temperature, precipitation, tem-perature:precipitation ratios, tree type, soil texture, and age had important explanatory value for R/S. However,linear regression analysis showed that aboveground biomass density, age, and latitudinal category were the most important predictors of root biomass density, and together explained 84% of the variation. A comparison of root biomass density estimates based on our equa-tions with those based on use of generalized R/S ratio for forests in the United States indicated that our method tended to produce estimates that were about20% higher.
| Main Authors: | , , , |
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| Format: | Texto biblioteca |
| Language: | spa |
| Published: |
Sin lugar Springer-Verlag
1997
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| Subjects: | BIOMASA, ESTIMACION, MODELOS, RAICES, DENSIDAD, MODELOS DE REGRESION, ECUACIONES ALOMETRICAS, AGRICULTURA, |
| Online Access: | https://link.springer.com/article/10.1007/s004420050201 |
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