Table 5 Mean and standard deviation for the mean annual precipitation (MAP), mean annual temperature (MAT), sand, silt, clay, age, altitude, and pH in all types of tree species
From: Influence of trees and associated variables on soil organic carbon: a review
| Â | Max | Min | Mean | SD | N |
|---|---|---|---|---|---|
MAP(mm) | 4000.00 | 73.00 | 1210.00 | 588.00 | 74 |
MAT(oC) | 27.00 | − 1.00 | 15.49 | 7.10 | 71 |
Sand (%) | 94.70 | 2.60 | 43.20 | 23.74 | 50 |
Silt (%) | 86.20 | 1.87 | 34.89 | 19.91 | 47 |
Clay (%) | 60.60 | 3.50 | 23.51 | 14.31 | 51 |
Age (yrs.) | 110.00 | 6.00 | 41.46 | 23.41 | 37 |
Altitude (m asl) | 3440.00 | 6.00 | 1065.00 | 700.00 | 71 |
pH | 8.33 | 3.30 | 5.23 | 1.02 | 89 |