With the study of physical,chemical,morphological and mineralogical properties of three pedons of typical albic soils from the Three River plain of Heilongjiang Province,we discussed the pedogenetic characteristics.The profiles were found to be lithologically countinuous by the comparsion of Zr/Sr and Ti/Zr ratio within the pedons.The albic soils study was characterized by a mollic epipedon,an ablic E horizon and a thick argillic horizon.Through this study,it was indicated that lessivage was a dominant pedogenetic process.Pedogenic Fe Mn nodules were found abundant in Ah and E horizons and were apparently forrned by weathering of Fe-Mn primary minerals,and the nodules may have developed in situ.The maximum amounts of pyrophosphate extractable Fe and AI appeared it Bt2 horizons were smaller than the values required for podzols.Vermiculite,which had not previously been recognized,dominated the clay fraction of albic soils.The clay mineral assemblage was qualitatively similar but quantitively differentiated throughout the profile.Finally,we suggested that the albic soils could be classified as mollie planosols in the FAO-UNESCO system and Typical Argialbolls in Soil Taxonomy.
邢宝山,M. J. Dudas,张之一,徐琪.三江平原白浆土发生学特性[J].土壤学报,1994,31(1):95-104. Xing Baoshan, M. J. Dudas, Zhang Zhiyi, Xu Qi. PEDOGENETIC CHARACTERISTICS OF ALBIC SOILS IN THE THREE RIVER PLAIN, HEILONGJIANG PROVINCE[J]. Acta Pedologica Sinica,1994,31(1):95-104.