Multivariate Exploratory Analysis of the Bulgarian Soil Quality Monitoring Network
Abstract
:1. Introduction
2. Results
2.1. Basic Statistics
2.2. Chemometric Data Interpretation
2.3. Mapping of Principal Components
3. Discussion
3.1. Basic Statistics
3.2. Chemometric Data Interpretation
3.3. Mapping of Principal Components
4. Materials and Methods
4.1. Sampling and Chemical Analysis
4.2. Data Analysis Methods
5. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
Sample Availability
References
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Dimension | Mean | St. Dev. | Median | Minimum | Maximum | |
---|---|---|---|---|---|---|
C | g kg−1 | 18.8 | 10.7 | 16.0 | 0.31 | 113 |
N | g kg−1 | 1.81 | 0.96 | 1.60 | 0.40 | 9.91 |
P | mg kg−1 | 881 | 585 | 740 | 199 | 4634 |
Physical clay | % | 51.6 | 19.6 | 57.5 | 9.79 | 83.0 |
pH | - | 6.78 | 0.98 | 6.80 | 3.80 | 8.80 |
Cu | mg kg−1 | 31.4 | 30.8 | 23.7 | 3.60 | 351 |
Zn | mg kg−1 | 63.5 | 22.3 | 64.3 | 1.26 | 162 |
Cd | mg kg−1 | 0.23 | 0.31 | 0.16 | 0.02 | 4.32 |
Pb | mg kg−1 | 20.5 | 17.8 | 16.8 | 3.07 | 200 |
Ni | mg kg−1 | 35.8 | 20.2 | 35.4 | 1.20 | 208 |
Cr | mg kg−1 | 53.0 | 34.7 | 45.4 | 2.30 | 213 |
As | mg kg−1 | 8.21 | 11.3 | 6.70 | 0.04 | 159 |
Hg | mg kg−1 | 0.15 | 0.13 | 0.12 | 0.01 | 0.97 |
PC1 | PC2 | PC3 | PC4 | PC5 | |
---|---|---|---|---|---|
C | 0.63 a | −0.04 | 0.00 | −0.59 | 0.20 |
N | 0.73 b | 0.00 | 0.09 | −0.52 | 0.00 |
P | −0.02 | 0.00 | 0.08 | −0.83 | −0.08 |
Physical Clay | −0.02 | 0.50 | 0.05 | 0.06 | −0.39 |
pH | 0.10 | 0.24 | 0.04 | 0.16 | −0.79 |
Cu | −0.05 | 0.24 | 0.72 | 0.06 | 0.08 |
Zn | 0.16 | 0.14 | 0.70 | −0.28 | −0.04 |
Cd | 0.78 | −0.01 | −0.03 | 0.15 | −0.08 |
Pb | 0.64 | −0.09 | 0.26 | −0.01 | 0.07 |
Ni | −0.05 | 0.90 | 0.05 | −0.03 | −0.11 |
Cr | −0.04 | 0.87 | 0.10 | 0.00 | 0.13 |
As | 0.13 | −0.12 | 0.70 | 0.02 | −0.07 |
Hg | 0.15 | 0.18 | 0.03 | 0.30 | 0.68 |
Expl.Var.% | 15.73 | 15.37 | 12.21 | 11.74 | 10.25 |
Conditional name | Mountain soil | Geogenic | Ore deposits | Low nutrition | Hg-specific |
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Yotova, G.; Hristova, M.; Padareva, M.; Simeonov, V.; Dinev, N.; Tsakovski, S. Multivariate Exploratory Analysis of the Bulgarian Soil Quality Monitoring Network. Molecules 2023, 28, 6091. https://doi.org/10.3390/molecules28166091
Yotova G, Hristova M, Padareva M, Simeonov V, Dinev N, Tsakovski S. Multivariate Exploratory Analysis of the Bulgarian Soil Quality Monitoring Network. Molecules. 2023; 28(16):6091. https://doi.org/10.3390/molecules28166091
Chicago/Turabian StyleYotova, Galina, Mariana Hristova, Monika Padareva, Vasil Simeonov, Nikolai Dinev, and Stefan Tsakovski. 2023. "Multivariate Exploratory Analysis of the Bulgarian Soil Quality Monitoring Network" Molecules 28, no. 16: 6091. https://doi.org/10.3390/molecules28166091