Ecological restoration of coal mine degraded lands using a grass-legume mixture-a case study from India
In India, coal deposit is locked under forest cover and more than 92% is extracted by surface mining that causes massive destruction of land and vegetation, alterations in landscape and aesthetics.Minesoils act as continuous source of pollution until they are reclaimed.Since last five decades,reclamation by tree plantation was the sole aim by the mining companies.From last decade only, it has been realized that degraded areas have to ecologically restore by developing three-tier canopy cover.In this paper, ecological restoration of coal mine overburden was under taken by using grass-legume seedsas an initial coloniser and observed that after 3 years overall increment of soil organic carbon was 80%.Available N was increased from 70 mg kg-1 to 225 mg kg-1 after 3 years.Available P and potassium also increased substantially.Cost of ecological restoration by using grass-legume mixture an initial coloniser and plantation of tree sapling (2500 nos/ha and maintenance for 3 years) comes to USD 11300 ha-1.
Subodh Kumar Maiti Jitendra Ahirwal
Department of Environmental Science and Engineering, Centre of Mining Environment, Indian Institute of Technology (Indian School of Mines), Dhanbad, Jharkhand, India
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
419-431
2017-10-20（万方平台首次上网日期，不代表论文的发表时间）