Rhizosphere soil microbial index of tree species in a coal mining ecosystem

被引:159
作者
Sinha, Shipra [1 ]
Masto, R. E. [1 ]
Ram, L. C. [1 ]
Selvi, V. A. [1 ]
Srivastava, N. K. [1 ]
Tripathi, R. C. [1 ]
George, Joshy [1 ]
机构
[1] Cent Inst Min & Fuel Res, Environm Management Div, Dhanbad 828108, Jharkhand, India
关键词
Rhizosphere; Microbial biomass; Soil enzymes; Respiration; Microbial index; ORGANIC-MATTER; DEHYDROGENASE-ACTIVITY; ENZYME-ACTIVITIES; BIOMASS CARBON; QUALITY; NITROGEN; SYSTEMS; IMPACT; FOREST; L;
D O I
10.1016/j.soilbio.2008.11.022
中图分类号
S15 [土壤学];
学科分类号
0903 ; 090301 ;
摘要
Microbial characterization of the tree rhizosphere provides important information relating to the screening of tree species for re-vegetation of degraded land. Rhizosphere soil samples collected from a few predominant tree species growing in the coal mining ecosystem of Dhanbad, India, were analyzed for soil organic carbon (SOC), mineralizable N, microbial biomass carbon (MBC) active microbial biomass carbon (AMBC), basal soil respiration (BSR), and soil enzyme activities (dehydrogenase, urease, catalase, phenol oxidase, and peroxidase). Among the tree species studied, Aegle marmelos recorded the highest value for MBC (590 mg kg(-1)), urease (190.5 mu g NH4+-N g(-1) h(-1)), catalase (513 mu g H2O2 g(-1) h(-1)), dehydrogenase (92.3 mu g TPF g(-1) h(-1)), phenol oxiclase (0.057 mu M g(-1) h(-1)) and BSR/AMBC (0.498 mg CO2-C mg biomass(-1) day(-1)); Tamarindus indica for mineralizable N (69.5 mg kg(-1)); Morus alba for catalase (513 mu g H2O2 g(-1) h(-1)) and phenol oxiclase (0.058 mu M g(-1) h(-1)); Tectona grandis for peroxidase (0.276 mu M g(-1) h(-1)), AMBC/MBC (99.4%), and BSR/MBC (0.108 mg CO2-C mg biomass(-1) day(-1)); Ficus religiosa for AMBC (128.4 mg kg(-1)) and BSR (12.85 mg CO2-C kg(-1) day(-1)); Eugenia jambolana for MBC/SOC (8.03%); Butea monosoperma for AMBC/SOC (1.32%) and Azadirachta indica for BSR/AMBC (0.1134 mg CO2-C mg biomass(-1) day(-1)). Principal component analysis was employed to derive a rhizosphere soil microbial index (RSMI) and accordingly, dehydrogenase, BSR/MBC, MBC/SOC, EC, phenol oxidase and AMBC were found to be the most critical properties. The observed values for the above properties were converted into a unitless score (0-1.00) and the scores were integrated into RSMI. The tree species could be arranged in decreasing order of the RSMI as: A. marmelos (0.718), A. indica (0.715), Bauhinia bauhinia (0.693), B. monosperma (0.611), E. jambolana (0.601), Moringa oleifera (0.565), Dalbergia sissoo (0.498), T indica (0.488), Morus alba (0.415), F religiosa (0.291), Eucalyptus sp. (0.232) and T grandis (0.181). It was concluded that tree species in coal mining areas had diverse effects on their respective rhizosphere microbial processes, which could directly or indirectly determine the survival and performance of the planted tree species in degraded coal mining areas. Tree species with higher RSMI values could be recommended for re-vegetation of degraded coal mining area. (C) 2008 Elsevier Ltd. All rights reserved.
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页码:1824 / 1832
页数:9
相关论文
共 58 条
[51]  
Tandon H. L. S., 1995, Methods of analysis of soils, plants, waters, fertilisers & organic manures
[52]   SOIL AND LITTER RESPIRATION RATES IN DIFFERENT MICROHABITATS OF A MIXED OAK CONIFER FOREST AND THEIR CONTROL BY EDAPHIC CONDITIONS AND SUBSTRATE QUALITY [J].
TEWARY, CK ;
PANDEY, U ;
SINGH, JS .
PLANT AND SOIL, 1982, 65 (02) :233-238
[53]   Plant species and nutritional-mediated control over rhizodeposition and root decomposition [J].
Van der Krift, TAJ ;
Kuikman, PJ ;
Möller, F ;
Berendse, F .
PLANT AND SOIL, 2001, 228 (02) :191-200
[54]   AN EXTRACTION METHOD FOR MEASURING SOIL MICROBIAL BIOMASS-C [J].
VANCE, ED ;
BROOKES, PC ;
JENKINSON, DS .
SOIL BIOLOGY & BIOCHEMISTRY, 1987, 19 (06) :703-707
[55]   An examination of the Degtjareff method for determining soil organic matter, and a proposed modification of the chromic acid titration method [J].
Walkley, A ;
Black, IA .
SOIL SCIENCE, 1934, 37 (01) :29-38
[56]   A COMPARATIVE-ASSESSMENT OF FACTORS WHICH INFLUENCE MICROBIAL BIOMASS CARBON AND NITROGEN LEVELS IN SOIL [J].
WARDLE, DA .
BIOLOGICAL REVIEWS, 1992, 67 (03) :321-358
[57]   A critique of the microbial metabolic quotient (qCO(2)) as a bioindicator of disturbance and ecosystem development [J].
Wardle, DA ;
Ghani, A .
SOIL BIOLOGY & BIOCHEMISTRY, 1995, 27 (12) :1601-1610
[58]   Differences in rhizosphere carbon-partitioning among plant species of different families [J].
Warembourg, FR ;
Roumet, C ;
Lafont, F .
PLANT AND SOIL, 2003, 256 (02) :347-357