Spatial Variation of Biomass Carbon Density in a Subtropical Region of Southeastern China
Abstract
:1. Introduction
2. Experimental Section
2.1. Study Area and Sampling Site Description
2.2. Data Analysis
3. Results and Discussion
3.1. Descriptive Statistics of Forest Biomass Carbon Density
Min | 5% | 25% | Median | 75% | 95% | Max | Mean | SD | CV (%) | Skew | Kurt | K-Sp |
---|---|---|---|---|---|---|---|---|---|---|---|---|
0.12 | 1.45 | 13.48 | 22.81 | 37.16 | 142.61 | 182.12 | 27.33 | 20.14 | 73.69 | 1.72 (0.02) | 5.91 (0.68) | 0.00 (0.284) |
3.2. Spatial Symbol Map of Forest Biomass Carbon Density
3.3. The Environmental Factors Related to Forest Biomass Carbon Density
Elevation | Slope aspect | Slope position | Forest age | Forest litter carbon | Soil Organic carbon | Soil Available N | Soil pH | Soil Available P | Soil Available K | |
FBC | 0.237 ** | 0.003 | −0.166 ** | 0.468 ** | 0.306 ** | 0.176 ** | 0.124 ** | −0.076 * | 0.050 | 0.030 |
Elevation | −0.351 ** | −0.016 | 0.071 | 0.188 ** | 0.208 ** | 0.268 ** | 0.016 | 0.030 | 0.243 ** | |
Slope aspect | 0.009 | −0.034 | −0.073 * | −0.037 | −0.024 | 0.025 | 0.014 | −0.021 | ||
Slope position | −0.136 ** | −0.158 ** | −0.083 * | −0.082 * | 0.152 ** | 0.013 | −0.041 | |||
Forest age | 0.219 ** | 0.137 ** | 0.074 * | −0.085 * | −0.008 | 0.042 | ||||
Forest litter carbon | 0.23 ** | 0.157 ** | −0.094 * | −0.01 | 0.005 | |||||
Soil Organic carbon | 0.589 ** | −0.029 | 0.219 ** | 0.339 ** | ||||||
Soil Available N | 0.056 | 0.264 ** | 0.405 ** | |||||||
Soil pH | 0.144 ** | 0.202 ** | ||||||||
Soil Available P | 0.287 ** |
3.4. Spatial-Cluster and Spatial-Outlier Analyses
3.5. Semivariance Analysis and Spatial Distribution
Data | Models | (Nugget) C0 | (Sill) C0 + C | (Nugget / Sill %) C0/(C0 + C) | Range a (km) | R2 |
---|---|---|---|---|---|---|
Box-Cox transformation | Spherical | 0.011 | 0.023 | 47.8 | 98.5 | 0.906 |
Exponential | 0.014 | 0.024 | 58.3 | 102.4 | 0.875 | |
Circular | 0.018 | 0.025 | 72.0 | 96.3 | 0.822 | |
Gaussian | 0.021 | 0.028 | 75.0 | 99.7 | 0.786 |
4. Conclusions
Acknowledgments
Author Contributions
Conflicts of Interest
References
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Fu, W.; Fu, Z.; Ge, H.; Ji, B.; Jiang, P.; Li, Y.; Wu, J.; Zhao, K. Spatial Variation of Biomass Carbon Density in a Subtropical Region of Southeastern China. Forests 2015, 6, 1966-1981. https://doi.org/10.3390/f6061966
Fu W, Fu Z, Ge H, Ji B, Jiang P, Li Y, Wu J, Zhao K. Spatial Variation of Biomass Carbon Density in a Subtropical Region of Southeastern China. Forests. 2015; 6(6):1966-1981. https://doi.org/10.3390/f6061966
Chicago/Turabian StyleFu, Weijun, Zhuojing Fu, Hongli Ge, Biyong Ji, Peikun Jiang, Yongfu Li, Jiasen Wu, and Keli Zhao. 2015. "Spatial Variation of Biomass Carbon Density in a Subtropical Region of Southeastern China" Forests 6, no. 6: 1966-1981. https://doi.org/10.3390/f6061966