Ecological study of revegetated coal mine spoil of an Indian dry tropical ecosystem along an age gradient
IR@CIMFR: CSIR-Central Institute of Mining and Fuel Research, Dhanbad
View Archive Info| Field | Value | |
| Title |
Ecological study of revegetated coal mine spoil of an Indian dry tropical ecosystem along an age gradient
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| Creator |
Singh, R.S.
Chaulya, S.K. |
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| Subject |
Envieronmental Management Group
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| Description |
Mineral nitrogen (MN), belowground (root)
biomass (BGB), soil nitrogen (N) mineralization (NM),
microbial biomassN(MBN) andmine dump stability of
a revegetated mine spoil were studied after 2, 6, 10 and
12 years of re-vegetation on coal mine spoil site.MNin
revegetatedmine spoil ranged from7.4 to 11.6 kg ha-1,
NMfrom 38.4 to 252 kg ha-1 year-1,MBN from 86 to
426 kg ha-1, and BGB from 380 to 3,750 kg ha-1.
Mining caused decline of physico-chemical characteristics
of soil like MN by 46 %, N-mineralization by
92 %, MBN values by 91 %, respectively compared to
forest ecosystems and reduction of total plant biomass
(above ground and below ground). Revegetation of
mine spoil caused increase inMN values by 12, 36 and
76 %, BGB values by 380, 1770 and 3750 times, NM
values by 0.6, 3.58 and 9.5 times and MBN values by
0.43, 2.77, and 6.07 times in 2, 6 and 12 years,
respectively. BGB was highly correlated with MN and
MBN. Clay content was positively correlated to MN,
NM, and the age of revegetation (P\0.01). Numerical
modelling indicated that revegetation increased the
dump slope stability with a factor of safety from 1.2 to
1.4, 1.7, 1.9 and 2.1 after 2, 6, 10 and 12 years,
respectively. Thus, long-termrevegetationwas found to
enhance the dump stability and the soil fertility status in mine spoil, where plant biomass and microbial biomass
provide major contributions in ecological redevelopment
of the mine spoil.
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| Publisher |
Springer
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| Date |
2012-11
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://cimfr.csircentral.net/1623/1/2012Biodeg.pdf
Singh, R.S. and Chaulya, S.K. (2012) Ecological study of revegetated coal mine spoil of an Indian dry tropical ecosystem along an age gradient. Biodegradation, 23 (6). pp. 837-849. ISSN 0923-9820 |
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| Relation |
http://cimfr.csircentral.net/1623/
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