PAN style="FONT-FAMILY: 宋体; COLOR: black; FONT-SIZE: 12pt; mso-font-kerning: 18.0pt; mso-bidi-font-family: 宋体" lang=EN-US>Characteristics of Soil Iron and Its Pedogenetic Significance in the Process of Karst Rocky Desertification, Southwest China

• 责任者：Li Xiaoliang (College of Resources and Environmental Sciences ; Nanjing Agricultural University ; Nanjing 210095 ; China) ; Chen Xiaomin
• 刊名：Geological Bulletin of China
• 出版年：2010
• 卷期：29(5)
• 关键词：石漠化 ; rock desertification ; 铁 ; iron
• 页码：p.745-751
• 图表：4 illus., 4 tables, 25 refs.
• 分类号：1800
• issnNo：ISSN1671-2552
• isbnNo：CN11-4648/P

PAN style="FONT-SIZE: 14pt" lang=EN-US>Soil iron oxide indicates soil-forming process and soil-forming environment under which the iron oxide was formed. Soil iron oxides of natural soils and agriculture soils in different phases of karst rocky desertification in southwestern China were analyzed in this paper. The results were as follows: the soil total iron content in karst region ranges from 38.9～53.9 g/kg. The free iron oxide content ranges from 18.0～26.7 g/kg. The degree of free iron ranges from 44.1% to 73.4%, and the degree of active iron ranges from 7.2% to 11.4%.