Rehabilitation of bauxite residue to support soil development and grassland establishment

作     者：XUE Sheng-guo Ronan COURTNEY;薛生国

作者机构：Department of Biological Sciences and Bernal Institute University of LimerickCo. School of Metallurgy and Environment Central South University 

出 版 物：《Journal of Central South University》 (中南大学学报（英文版）)

年 卷 期：2019年第26卷第2期

页      面：353-360页

核心收录：

学科分类：0810[工学-信息与通信工程] 083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 07[理学] 0806[工学-冶金工程] 08[工学] 09[农学] 0903[农学-农业资源与环境] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 0713[理学-生态学] 

基　　金：Projects(41877551,41842020)supported by the National Natural Science Foundation of China Project supported by the Science Foundation Ireland 17/CDA/4778 

主　　题：bauxite residue substrate amendment soil development soil formation in bauxite residue vegetation establishment 

摘      要：Rehabilitation(amendment and vegetation establishment)on bauxite residue is viewed as a promising strategy to stabilize the surface and initiate soil ***,such approaches are inhibited by high pH,high exchangeable sodium(ESP)and poor nutrient *** with gypsum is effective in improving residue physical and chemical properties and promoting seed establishment and *** of organics(***)can address nutrient deficiencies but supplemental fertilizer additions may be required.A series of germination bioassays were performed on residue to determine candidate species and optimum rehabilitation application *** field trials assessed establishment of grassland species Holcus lanatus and Trifolium pratense as well as physical and chemical properties of amended *** up monitoring over five years assessed elemental content in grassland and species *** co-application of the amendments several grassland species can grow on the *** time other plant species can invade the restored area and fast growing nutrient demanding grasses are *** species can establish within a 5 Yr period and there is evidence of nutrient *** pH,sodicity and nutrient deficiencies are the major limiting factors to establishing grassland on *** restoration several plant species can grow on amended residue.