Research Article
The Variations in the Soil Enzyme Activity, Protein Expression, Microbial Biomass, and Community Structure of Soil Contaminated by Heavy Metals
Table 2
The Pearson correlation coefficients between the microbial parameters and the concentrations of heavy metals.
| | Acid phosphatase | Dehydrogenase | Microbial biomass C | Protein |
| Cu | | | | | CaCl2 | −0.500 | −0.597* | −0.632* | −0.705* | EDTA | −0.576* | −0.628* | −0.834** | −0.884** | DTPA | −0.568 | −0.649* | −0.839** | −0.874** | Total | −0.586
*
| −0.594
*
| −0.729
**
| −0.866
**
|
| Zn | | | | | CaCl2 | −0.400 | −0.584* | −0.604* | −0.543 | EDTA | −0.554 | −0.685* | −0.683* | −0.596* | DTPA | −0.613* | −0.734** | −0.748** | −0.698* | Total | −0.531 | −0.680
*
| −0.716
**
| −0.653
*
|
| Pb | | | | | CaCl2 | −0.239 | −0.485 | −0.303 | −0.219 | EDTA | −0.586* | −0.709** | −0.624* | −0.643* | DTPA | −0.719** | −0.760** | −0.583* | −0.669* | Total | −0.569 | −0.693
*
| −0.604
*
| −0.645
*
|
| Cd | | | | | CaCl2 | −0.379 | −0.515 | −0.551 | −0.542 | EDTA | −0.486 | −0.544 | −0.679* | −0.814** | DTPA | −0.425 | −0.539 | −0.726** | −0.794** | Total | −0.528 | −0.494 | −0.576
*
| −0.817
**
|
|
|
Note: **correlation is significant at the 0.01 level (2-tailed).
*Correlation is significant at the 0.05 level (2-tailed).
|