文章基本信息

标题：MINERALOGICAL CHARACTE-RIZATION OF SOILS IN PLANTATION FOREST OF EAST KALIMANTAN, INDONESIA
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作者：Paranoan R.R. ; Kustiawan W. ; Marjenah 等
期刊名称：Russian Journal of Agricultural and Socio-Economic Sciences
印刷版ISSN：2226-1184
电子版ISSN：2226-1184
出版年度：2021
卷号：109
期号：1
页码：101-104
DOI：10.18551/rjoas.2021-01.13
语种：English
出版社：Russian Journal of Agricultural and Socio-Economic Sciences
摘要：Soil minerals including primary mineral and (secondary) clay mineral play an important role which has greatly contributed in determining the properties of soils and availability of soil nutrient reserve in soil. The objective of the study was to identify of clay minerals and primary minerals (sand fraction) at forest plantation area in East Kalimantan, Indonesia. The mineralogical composition of fine sand fraction of soils was identified using a polarizing microscope (PM). The mineralogical composition of clay fractions was determined using X-ray diffraction analysis (XRD). The research plot is circular with an area of 0.05 ha and a radius of 12.6 m. Four soil sample from four plots collected for soil mineral analysis. The results showed that the clay fraction in plot A 45 has moderate amounts of kaolinite and vermiculite, trace amounts of goethite and illite. Plot A 34 was dominated by kaolinite, small amounts of vermiculite, trace amounts of illite. Plot A 36 was dominated by kaolinite, small amounts of vermiculite and illite, trace amounts of goethite. Plot A 33 was dominated by kaolinite small amounts of vermiculite and quartz. Compositions of Sand fraction at study area were dominated by resistant minerals (quartz).
关键词：Quartz;vermiculite;primay minerals;illit;clay minerals;kaolinite;industrial plantation forest.