Research, identification and selection of promising flora groups on the soil after bauxite exploitation in the Central Highlands

Abstract

The requirement for environmental rehabilitation after bauxite mining in the Central Highlands has been stated in many legal documents; however, in practice this activity is still at an early stage. The area that needs to rehabilitate the environment has been grow with some plants subjectively, but ineffectively. Based on the five criteria for identifying promising flora groups on the soil after bauxite exploitation (scientific and practical bases, meeting the requirements of environmental protection, soil improvement, anti-erosion in accordance with the natural conditions of mining areas, and economic efficiency), eight promising species have been identified and selected including four forestry trees (Acacia mangium x Acacia auriculiformis, Eucalyptus urophylla, Pinus kesiya, and Pinus caribaea), two species of agricultural crops (Anacardium occidentale, Bixa orellana), and two species of soil plants covering (Crotalaria anagyroides, Wedelia trilobata). These promising species have been selected as the basis for developing the cultivation models for environmental restoration after bauxite exploitation