Characteristics And Classification Of Reclamated Soil In Coal-mining Subsidence Areas With High Groundwater

The human effects influence on soil becoming profound and the mining area soil problems becoming prominent increasingly with the development of industry. Reclamated soil profile configuration, physical and chemical properties are changed greatly due to human disturbance and formation of soil in a short time. The dissertation takes the reclamated soil in coal-mining subsidence areas with high groundwater as the research object, guided by the principle of the Chinese Soil Taxonomy (3rd edition), it conducts the sample point design, field investigation, observation on the spot and lab analysis of the soil characteristics. The soil profile morphology, physical and chemical properties, environment quality characteristic and distribution rule of different reclamation technology and reclamation time were systematic analysis. The research discusses the reclamated soil development formula and formation mode on the analysis of soil formation function and formation process. The diagnostic horizons and diagnostic characteristics of reclamated soil were confirmed and used to classify them in the soil classification retrieval system, the international soil classification reference were studied simultaneously for facilitate international communication. The thesis attempt to establish suitable for reclamated soil classification retrieval system for expand the Chinese Soil Taxonomy (3rd edition). Finally, specific soil succession was deduced and some management suggestions were propounded to realize the sustainable use of reclamated soil. The research results might have important significance in extension soil science category, meeting the demand for soil science during reclamation process, soil remediation and sustainable use, etc.