文章基本信息

标题：Distribution Characteristics of Micronutrients in Mining Induced Subsided Land of an Underground Coal Mine of South Eastern Coalfields, India
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作者：Ashish Kumar Vishwakarma ; Rajesh Rai ; B. K. Shrivastva 等
期刊名称：Nature, Environment and Pollution Technology
印刷版ISSN：0972-6268
出版年度：2019
卷号：18
期号：2
页码：491-496
语种：English
出版社：Technoscience Publications
摘要：This paper aims to study the distribution of available micronutrients (Fe, Mn, Cu and Zn) for plants in an underground coal mining induced subsided land of South Eastern Coalfield Limited (SECL), India. Depth-wise changes in soil texture, soil organic matter (SOM) and micronutrient components were evaluated in crack (Profile 2 or P2), slope (Profile 3 or P3) and maximum subsided zone (Profile 4 or P4) of a subsided land and a neighbouring undisturbed land (Profile 1 or P1). Contents of available Fe, Mn,Cu and Zn were in the range of (mg.kg-1) 50.58-85.17, 40.50-64.93, 3.15-10.43 and 2.13-6.20, respectively at P1 and P4, while the contents at P2 and P3 were in the range of (mg.kg-1) 4.10-10.25,1.26-1.74, 0.12-0.19 and 0.31-0.52, respectively. Considering the critical levels of amounts (mg.kg-1) of DTPA extracted micronutrients, the soils at P1 and P4 were found to have an adequate amount of Fe, Mn, Cu and Zn while P2 and P3 were having lower amounts than the critical levels except the Fe.Positive changes in the content values of the above elements were observed at P4, as demonstrated by increases of 54.90%, 12.98%, 127.02% and 38.30%, respectively. P3 and P2 had shown a negative change. The dispersion patterns of accessible Cu and Zn throughout the soil depth were very similar. By simple linear regression analysis, it was observed that mutual affinity for SOM might influence their distribution in soil. Amount of Fe and Mn displayed different but more consistent distribution within a soil layer.
关键词：Coal mining;Subsidence;Micronutrients;Trace elements;Soil texture