The criteria for classifying soil as saline taxon are different in different soil classification systems. Soils are named as saline soil in Chinese Soil Taxonomy, World Reference Base for the Soil Resources and US Soil Taxonomy, respectively, when soil has a salic horizon starting within 30 cm, within 50 cm and within 100 cm from the soil surface. This paper describes some soil profiles that were classified into saline taxon in CST, WRB and ST before they are reclaimed, to see if these soils after a long history of irrigation are still classified into saline taxon in the three soil classification systems. The results show that the salts were leached into certain depth, the salic horizons were observed at different depth from the surface, many profiles could not be classified as Orthic Halosols as identified earlier, some of them could not be classified as Solonchaks, few of them even could not be classified as Salids. The depth of salic horizon is related to the amount of irrigation water and irrigation models. According to the present study, we suggest that the criteria of ST should be taken for keeping reclaimed saline soils in the saline taxon, i.e. Soil classification should not be changed by irrigation.
张凤荣,王秀丽,王 数,郑 重,吴 昊.中国土壤系统分类中盐成土及其相关土壤诊断标准的修订建议[J].土壤学报,2013,50(2):419-422. DOI:10.11766/trxb201204250151 Zhang Fengrong, Wang Xiuli, Wang Shu, Zheng Zhong, Wu Hao. Suggested revisions of diagnostic criteria for Halosols and relevant soils in Chinese Soil Taxonomy[J]. Acta Pedologica Sinica,2013,50(2):419-422.复制