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Extra info for The Soils of Taiwan

Sample text

The Udalfs are dominant great groups of Alfisols in Taiwan. 1 Serpentine-Derived Soil Serpentine is a product of hydrothermally metamorphic ultramafic rocks such as peridotites, dunites, and pyroxenites (Fig. 1). Although serpentines and soils cover only a small area of the Earth’s terrestrial surface, they are abundant in ophiolite belts and have been typically found within regions of the Circum-Pacific margin and Mediterranean Sea (Oze et al. 2004a, b). Exposed serpentines on the surface are locally found along the eastern sides of the Central Range and the western sides of the Coastal Range, Eastern Taiwan.

1989) and Lee et al. (2004) indicated that highly developed serpentinitic soils displayed higher Ca/Mg ratios because Mg was leached out of the soils and plant detritus containing Ca was added to the soils. 2 Profile Characteristics 27 Ca/Mg values. The base saturation (BS) of the diagnostic horizon in TA pedon generally exceeds 35 %. Organic C (OC) contents are generally the greatest in the surface organic horizon and decrease with soil depth. 0 %. Soils derived from serpentinites may display strong chemical fertility limitations owing both to low Ca/Mg ratio and to non-anthropogenic Cr and Ni enrichments (Bonifacio et al.

The mean annual rainfall was about 4,900 and 4,400 mm in Anpu and Chutzuhu weather station, respectively. -S. 1007/978-94-017-9726-9_4, © Springer Science+Business Media Dordrecht 2015 35 36 4 Andisols Fig. 1 The landscape view of major volvanic mountains in the Yangmingshan national park (YMS-NP). ; f Meintein Mt. Copyright by Prof. Tsai September to November (autumn). Typhoon and northeast monsoon both caused very high rainfall during July and December, or till March in the next year. The amount of evaporation in this region was smaller than the rainfall, and annually only 859 mm in Anpu and 951 mm in Chutzuhu station (Chen and Tsai 1983).

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