铁铝土
- 网络Ferralsols;ferralsol
铁铝土-
成土时间较长的铁铝土（6.12Ma）中石英颗粒出现裂解现象。
In Ferrallitic soil ( 6.12Ma ) . decomposition phenomena was occurred in quartz grains .
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结果表明，与地带性自然植被下丘陵湿润铁铝土比较，次生植被或人工植被下丘陵湿润铁铝土结构退化现象明显。
Results showed that compared with the soil under zonal natural vegetation it suffered more structure degradation under secondary or man-made vegetation .
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哥斯达黎加地处热带，有铁、铝土、锰、铜、铅等矿藏.森林资源丰富，盛产红木、云杉、橡树。
Located in the tropical area , the country is rich in natural resources like iron , aluminum , manganese , copper , lead and forest resources like mahogany , spruce , and oak trees .