Effects of Plant Types on Physico-chemical Properties of Reclaimed Mining Soil in Inner Mongolia,China  

作　　者：FU Yao LIN Changcun MA Jianjun ZHU Tingcheng 

机构地区：[1]Key Laboratory for Vegetation Ecology of Ministry of Education, Institute of Grassland Science, Northeast Normal University, Changehun 130024, China [2]College of Animal Science and Technology, China Agricultural University, Beijing 100193, China [3]Chinese Research Academy of Environmental Sciences, Beijing 100012, China [4]Langfang Normal College, Langfang 065000, China

出　　处：《Chinese Geographical Science》2010年第4期309-317,共9页中国地理科学（英文版）

基　　金：Under the auspices of Major State Basic Research Development Program of China (No. 2007CB106801);the Seventh Framework Program of European Union (No. 226818);Testing Foundation of Northeast Normal University

摘　　要：A field experiment was conducted in Jungar Banner,Inner Mongolia,China to study the effects of plant types on the physical structure and chemical properties of open-cast mining soils reclaimed for 15 years,and to analyze the triggering factors of the soil formation.Results indicate that plant types affect soil-forming process especially in the upper layer (0-20 cm),and the spatial structure of reclaimed plant is the main reason for variability of the soil-forming process.In the upper soil layer at the site reclaimed with mixed plants,the concentrations of soil organic matter (SOM) and soil organic carbon (SOC) are the highest,and they were significantly higher at the sites reclaimed with Leymus chinensis,Caragana sinica,which is mainly due to a large amount of litter fall and root exudation in herbages and shrubs.However,the concentrations of SOM and SOC in the soils at the reclaimed sites are quite low comparing with those in local primary soil,which indicates the importance of using organic amendments during the ecological restoration in the study area.A field experiment was conducted in Jungar Banner, Inner Mongolia, China to study the effects of plant types on the physical structure and chemical properties of open-cast mining soils reclaimed for 15 years, and to analyze the triggering factors of the soil formation. Results indicate that plant types affect soil-forming process especially in the upper layer （0-20 cm）, and the spatial structure of reclaimed plant is the main reason for variability of the soil-forming process. In the upper soil layer at the site reclaimed with mixed plants, the concentrations of soil organic matter （SOM） and soil organic carbon （SOC） are the highest, and they were significantly higher at the sites reclaimed with Leymus chinensis, Caragana sinica, which is mainly due to a large amount of litter fall and root exudation in herbages and shrubs. However, the concentrations of SOM and SOC in the soils at the reclaimed sites are quite low comparing with those in local primary soil, which indicates the importance of using organic amendments during the ecological restoration in the study area.

关 键 词：open-cast coal mining mining reclamation soil physico-chemical property soil organic matter soil organic carbon 

分 类 号：S714.2[农业科学—林学] S731.2