RELATIONSHIP BETWEEN REDNESS INDEX OF SOIL AND CARBON STOCK OF AERIAL BIOMASS IN CERRADO VEGETATION
<p><span style="font-size: small;"><a href="http://dx.doi.org/10.5902/1980509810538">http://dx.doi.org/10.5902/1980509812362</a></span></p><p><span style="font-size: small;"><a href="http://dx.doi.org/10.5902/19805...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | Portuguese |
| Published: |
Universidade Federal de Santa Maria
2013-12-01
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| Series: | Ciência Florestal |
| Subjects: | |
| Online Access: | http://cascavel.ufsm.br/revistas/ojs-2.2.2/index.php/cienciaflorestal/article/view/12362 |
| Summary: | <p><span style="font-size: small;"><a href="http://dx.doi.org/10.5902/1980509810538">http://dx.doi.org/10.5902/1980509812362</a></span></p><p><span style="font-size: small;"><a href="http://dx.doi.org/10.5902/1980509810538"></a>The color variety of soil is response of its physical, chemical, biological and mineralogical composition. The Munsell color system is based on an objective color evaluation in which it is possible to evaluate different </span><span style="font-size: small;"><span style="font-size: small;">color soil factors such as the presence of iron oxides, particle size, and accumulated organic material. The objective of this study was to identify the relation between the redness index (IAV) of soil and the amount of carbon content present in the aerial part of Cerrado vegetation. The study was conducted in seven cities </span><span style="font-family: Times New Roman,Times New Roman; font-size: small;"><span style="font-family: Times New Roman,Times New Roman; font-size: small;">in western Bahia state, in native areas of Cerrado. The determination o soil color was made in the field, </span></span><span style="font-size: small;">with moist soil samples, using the Munsell color chart. From the evaluation of hue, value and chroma, the </span><span style="font-family: Times New Roman,Times New Roman; font-size: small;"><span style="font-family: Times New Roman,Times New Roman; font-size: small;">redness index (IAV) was calculated. The estimation of carbon stock above ground was carried out from: </span></span><span style="font-size: small;">trunk and branches, both living and dead trees by the allometric equation developed in Cerrado areas. The </span><span style="font-family: Times New Roman,Times New Roman; font-size: small;"><span style="font-family: Times New Roman,Times New Roman; font-size: small;">redness index of soil, from the layer 0.00 to 0.20 m, has a significant and directly proportional relationship </span></span><span style="font-size: small;">with the carbon stock of above ground biomass of Cerrado vegetation. This may be extrapolated to calculate the carbon stock (EC) by the redness index (IAV) of soil by the equation [EC = 0.4936 · IAV + 4.2286 </span><span style="font-family: Times New Roman,Times New Roman; font-size: small;"><span style="font-family: Times New Roman,Times New Roman; font-size: small;">(-1.5%)]. The practicality of sampling of data by IAV with Munsell chart, and the reliability of data fit by </span></span><span style="font-size: small;">results of residual error less than 5%, make that this relationship may be used for academic and corporative in carbon stocks estimation for use in forest and environmental management. The EC variation between the studied physiognomies is mainly by distinct density of tree individuals per hectare. The variation of IAV in studied areas is due to the accumulated organic matter on the soil surface, the mineral content and drainage </span><span style="font-family: Times New Roman,Times New Roman; font-size: small;"><span style="font-family: Times New Roman,Times New Roman; font-size: small;">capacity, according to inferences of literature, and this reflecting the different colors of soil in the studied </span></span><span style="font-size: small;">phytophysiognomies. </span></span></p> |
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| ISSN: | 0103-9954 1980-5098 |