A COMPARISON OF HUMUS QAUNTITY IN DRY DIPTEROCARP FOREST SOIL AND IN RUBBER PLANTATION SOIL AT SAMPRAO STUDY CENTER, UDON THANI RAJABHAT UNIVERSITY
Article Sidebar
Main Article Content
Abstract
The purpose of this research was to compare the influence of plant species in a dry dipterocarp forest and rubber plantations on the percentage of humus in the organic soil depth at a depth of 0-10 cm compared with the top soil at 10-30 cm depth. Soil samples were collected from under the canopy of dominated trees: Shorea obtusa, Shorea siamensis, Terminalia alata Heyne ex Roth., and soil sample from rubber plantations (Hevea brasiliensis) near Sam Prao Study Center, Udon Thani Rajabhat University. Sodium pyrophosphate mixed with sodium hydroxide were used for extracting humic acid from each sample. It was found that the percentage of humic acid from soil organic layer were 2.25, 2.25, 4.12 and 0.96, respectively; and the percentage of humic acid from top soil layer were 2.11, 2.10, 4.01 and 0.74, respectively. The results reveal that the percentage of humic acid in soil under Terminalia alata Heyne ex Roth. is the highest. When consider the percentage of humic acid under trees in a dry dipterocarp forest is higher than the percentage of humic acid in soil under rubber plantation.
Article Details
References
Haddad, G., Ali, F. E., & Mouneimne, A. H. (2015). Humic Matter of Compost: Determination of Humic Spectroscopic Ratio (E4/E6). Current Science International, 4(1), 56-72.
Jandl, R. et al. (2014). Current status, uncertainty and future needs in soil organic carbon monitoring. Science of the total Environment, 468-469, 376-383.
Jandl, R., Smidt, S., Mutsch, F., Furst, A., Zechmeister, H., & Bauer, H. (2012). Acidification and nitrogen eutrophication of Austrian forest soils. Applied Environmental Soil Science, 60, 685-696.
Jansson, D. W., Wullschleger, S., Kalluri, U., & Tuskan, G. (2010). Phytosequestration: carbon biosequestration by plants and the propects of genetic engineering. BioScience, 60, 685-696.
Oelbermann, M., Voroney, R. P., & Gordon, A. M. (2004). Carbon sequestration in tropical and temperate agroforestry systems: a review with examples from Costa Rica and southern Canada. Agricultural Ecosystem and Environment, 104, 359-377.
Ponge, J. F. (2013). Plant-soil feedbacks mediated by humus forms: A review. Soil Biological and Biochem, 57, 1048-1060.
Thangarajan, R., Bolan, N. S., Tian, G., Naidu, R., & Kunhikrishnan, A. (2013). Role of organic amendment application on greenhouse gas emission from soil. Science of the total Environment, 465, 72-96.
Xavier, F. A. S., Maia, S. M. F., Ribeiro, K. A., Mendonca, E. S., & Oliveira, T. S. (2013). Effect of cover plants on soil C and N dynamics in different soil management systems in dwarf cashew culture. Agricultural Ecosystem and Environment, 165, 173-183.
