Journal of Resources and Ecology, Volume. 11, Issue 5, 454(2020)
Effects of Forest Types and Environmental Factors on Soil Microbial Biomass in a Coastal Sand Dune of Subtropical China
Table 1.
Detailed site characteristics and topsoil properties of the five forest stands on the southeastern coast of China
View tableView in ArticleTable 1.
Detailed site characteristics and topsoil properties of the five forest stands on the southeastern coast of China
Variable Eucalyptus Pine Acacia Casuarinas Secondary forest Stand age (yr) 11 21 22 22 >50 Forest average DBH (cm) 15.60 21.00 21.10 17.90 9.70 Mean tree height (m) 11.40 13.90 12.50 14.90 5.60 Tree density (ind ha-1) 1300 1500 950 1600 1400 Litterfall (mg ha-1 yr-1) 12.32ab 12.99a 10.06b 10.08b 12.67a Litter C (g kg-1) 473.40bc 499.70ab 513.60a 497.70ab 495.80c Litter N (g kg-1) 9.21c 6.58d 15.10b 8.83c 16.41a Litter C:N ratio 51.55b 77.12a 34.07c 56.43b 28.05c Litter cellulose (g kg-1) 114.80d 217.90b 172.10c 275.20a 157.40c Litter lignin (g kg-1) 179.90e 365.90b 449.30a 227.50d 300.60c Litter lignin: N ratio 19.60c 56.50a 29.80b 25.80b 18.30c Root Biomass (mg ha-1) 2.16ab 1.05b 1.84ab 3.04a 2.77a Root C (g kg-1) 376.40ab 365.10b 304.80c 412.70a 378.00ab Root N (g kg-1) 5.70c 6.30c 10.50b 19.70a 19.20a Root C: N ratio 69.90a 63.50a 29.00b 20.90b 19.80b Bulk density (g cm-3) 1.36b 1.23cd 1.28bc 1.45a 1.17d pH 5.00b 4.65c 4.73c 4.71c 6.57a Total C (g kg-1) 6.65b 4.33b 4.08b 3.17b 12.71a Total N (g kg-1) 0.54b 0.53bc 0.53bc 0.27c 1.26a Soil C: N ratio 11.97a 8.12b 7.70b 11.58a 9.91ab Soil NH4+-N concentration (μg g-1) 3.52c 3.78c 6.27b 4.38c 7.00a Soil NO3--N concentration (μg g-1) 0.20b 1.14b 1.47b 0.87b 18.20a Total inorganic N (μg g-1) 2.30b 3.90b 6.50b 3.10b 25.80a Soil DOC (mg kg-1) 56.20b 40.40b 42.20b 53.30b 84.80a Soil DON (mg kg-1) 2.80bc 3.30bc 6.80b 0.60c 22.5a0 Available P (mg kg-1) 0.57b 0.61b 1.26b 0.89b 20.49a Exchangeable Mg (mg kg-1) 0.28b 0.33b 0.26b 0.32b 0.71a
Table 2.
Soil pH, soil bulk density, soil C and N content, and soil C: N ratio for the different forests (N=4)
View tableView in ArticleTable 2.
Soil pH, soil bulk density, soil C and N content, and soil C: N ratio for the different forests (N=4)
Soil depth (cm) Forest types Soil pH Bulk density (g cm-3) Soil C content (g kg-1) Soil N content (g kg-1) Soil C: N 0-10 Eucalyptus 5.00±0.08b 1.36±0.04b 6.65±2.67b 0.54±0.09b 11.97±2.91a Pine 4.65±0.13c 1.23±0.06cd 4.33±1.21b 0.53±0.04bc 8.12±1.80b Acacia 4.73±0.12c 1.28±0.10bc 4.08±0.35b 0.53±0.05bc 7.7±0.08b Casuarinas 4.71±0.08c 1.45±0.04a 3.17±0.69b 0.27±0.05c 11.58±1.08a Secondary forest 6.57±0.22a 1.17±0.04d 12.71±4.94a 1.26±0.34a 9.91±1.23ab 10-20 Eucalyptus 4.71±0.18b 1.47±0.04a 1.85±0.34b 0.31±0.07b 6.16±0.91a Pine 4.72±0.19b 1.43±0.02a 1.96±0.51b 0.31±0.02b 6.32±1.50a Acacia 4.76±0.09b 1.39±0.09a 1.68±0.13b 0.31±0.03b 5.46±0.30a Casuarinas 4.92±0.05b 1.47±0.04a 1.25±0.22b 0.14±0.02c 9.27±1.26a Secondary forest 6.50±0.69a 1.31±0.02b 4.57±0.93a 0.54±0.09a 8.44±1.15a
Table 3.
Pearson correlations between seasonal variations of soil MBC and MBN and soil temperature as well as water content
View tableView in ArticleTable 3.
Pearson correlations between seasonal variations of soil MBC and MBN and soil temperature as well as water content
Forest types T —MBCT —MBNW —MBCW —MBN0-10 cm 10-20 cm 0-10 cm 10-20 cm 0-10 cm 10-20 cm 0-10 cm 10-20 cm Eucalyptus -0.216 -0.007 -0.421 -0.937** 0.388 0.170 0.346 0.760** Pine -0.027 -0.151 -0.629** -0.709** 0.257 0.576* 0.066 0.522* Acacia -0.640** -0.217 -0.857** -0.786** 0.537* 0.057 0.553* 0.082 Casuarinas -0.269 -0.132 -0.785** -0.773** 0.100 0.352 0.619* 0.592* Secondary forest -0.178 -0.346 -0.158 -0.413 0.734** 0.713** 0.618* 0.819**
Table 4.
Pearson correlations between soil MBC and MBN and properties of soil, litter and fine roots
View tableView in ArticleTable 4.
Pearson correlations between soil MBC and MBN and properties of soil, litter and fine roots
Soil depth (cm) Variable MBN TC TN Bulk density pH Litterfall Litter C Litter N Root biomass Root C Root N 0-10 MBC 0.750** 0.697** -0.030 -0.609** 0.899** 0.202 -0.500* 0.651** 0.301 -0.388 0.326 MBN 1 0.820** -0.050 -0.586** 0.915** 0.408 -0.624** 0.671** 0.151 -0.188 0.505* 10-20 MBC 0.855** 0.904** 0.274 -0.585** 0.787** 0.474* -0.459* 0.447* 0.113 -0.453* 0.178 MBN 1 0.926** -0.130 -0.646** 0.952** 0.419 -0.593** 0.643** 0.243 -0.215 0.510*
Get Citation
Copy Citation Text
Wei GAO, Meimei LIN, Yongrong HUANG, Shide HUANG, Gongfu YE, Zhiqun HUANG. Effects of Forest Types and Environmental Factors on Soil Microbial Biomass in a Coastal Sand Dune of Subtropical China[J]. Journal of Resources and Ecology, 2020, 11(5): 454
Category: Forest Ecosystem
Received: Mar. 15, 2020
Accepted: May. 21, 2020
Published Online: Oct. 17, 2020
The Author Email: Zhiqun HUANG (zhiqunhuang@hotmail.com)
