Trend change of soil nutrients in the green slope of an open pit coal mine dump
This research chosen Baorixile Opencast Mine, Inner Mongolia in the grassland area as the study area, take samples in the reconstructed soil (1~5 years) of the dump slope to reveal the trend of soil nutrients variation in the reconstructed soil.Based on the determination the available potassium,available nitrogen, available phosphorus, TN and organic matter, the Principal Components Analysis (PCA) has been applied to calculate the Soil Nutrient Integrate Score (IFI) to reflect the change of soil nutrients with time.The results showed that the soil nutrients contents decreased in the first 3 years and then increased, and the variation range was 57.91 ~ 81.04.The IFI in the reconstructed soil of the dump slope was affected by the soil erosion and the surface accumulation of plants root.The accumulation rate of phosphorus and potassium in soil is accelerated by vegetation restoration, and then enhanced the soil IFI, which exceeded the original level after 5 years soil reconstruction.
Q.Zhu Z.Q.Hu X.R.Liu Y.Zhao Y.Cai
China University of Mining and Technology, Beijing, China
国际会议
The 2nd International Symposium on Land Reclamation and Ecological Restoration (第二届国际土地复垦与生态修复学术研讨会)
西安
英文
245-249
2017-10-20（万方平台首次上网日期，不代表论文的发表时间）