Minerals are the gift of nature which occurs either in thick forest areas or adjacent to it. During the course of mining, vegetation/forest gets destroyed and gets replaced by huge quantities of overburden dumps. Restoration of these dumps becomes necessary so that the land may come back to its original topography. Soil has the significant role in restoration process. Present paper focuses on how the physical characteristics of soil affect the restoration intervention in a derelict mined land. The study was carried out with an objective of evaluating the role of soil physical properties in ecological succession of an age series of 23, 22, 21 and 20 years old restored mine sites in Dehradun district, Uttarakhand, India. Adjoining natural forest was also studied for comparison of some selected soil physical properties (texture, porosity, electrical conductivity, bulk density). Data of the present investigation reveals that as the physical properties of soil improve with age of bio-restoration, the successional processes also advance culminating into successful restoration of mine derelict sites. The results of the present study will be helpful in further understanding the successional processes and how soil properties play significant role in successional processes.
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An Investigation of Groundwater Quality and Its Suitability to Irrigated Agriculture in Coimbatore District, Tamil Nadu, India – A GIS Approach
Author(s)- Balachandar. D, Sundararaj P, Rutharvel Murthy K, Kumaraswamy K.
The problems of water quality have become more important than the quantity, as the environmental problems are getting more serious in different parts of the world. A number of factors like geology, soil, effluents, sewage disposal and other environmental conditions in which the water happens to stay or move and interact with ground and biological characteristics. This influences greatly on the groundwater quality of an area. This study is made to evaluate the status of groundwater quality and its suitability to irrigated agriculture. For this study, 44 & 42 observation wells in 2005 and 44 & 39 observation wells in 2008 have been taken into consideration to study the variation in pre & post monsoon season. These observation wells are regularly maintained by Public Works Department of Government of Tamil Nadu. Water quality data are utilized in the present study for the analysis of groundwater chemistry of years 2005 and 2008 for both pre-monsoon (July) and post-monsoon (December) seasons. Water quality data used in the analysis include Electrical Conductivity (EC), Total Dissolved Solids (TDS), Total Hardness (TH) and Sodium Adsorption Ratio (SAR).
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