Land Use Types and Geomorphic Settings Reflected in Soil Organic Carbon Distribution at the Scale of Watershed
Abstract
:1. Introduction
2. Materials and Methods
2.1. Study Area
2.2. Soil Sampling
2.3. Analyses of Soil Properties
2.4. Calculation of SOCs
2.5. Spatial Auto-Correlation Method
2.6. Data Analysis
3. Results
3.1. Physicochemical Properties of Changhe Soils
3.2. The Distribution of SOCs with Land Use Types and Geomorphic Settings
3.3. The Distribution of SOCs in the Changhe Riparian Ecosystem
4. Discussion
5. Conclusions
Author Contributions
Acknowledgments
Conflicts of Interest
References
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Land Use Type | AK (mg kg−1) | AP (mg kg−1) | AN (g kg−1) | PH | BD (Mg m−3) | Field Water Capacity (%) | Clay (%) |
---|---|---|---|---|---|---|---|
Cropland | 44.99 ± 1.15a | 35.91 ± 2.23a | 0.78 ± 0.04a | 8.00 ± 0.03a | 1.30 ± 0.01a | 16.15 ± 0.00a | 28.75 ± 0.01a |
Forest land | 40.92 ± 5.05a | 33.71 ± 4.66a | 0.72 ± 0.11a | 8.00 ± 0.19a | 1.27 ± 0.04a | 16.02 ± 0.02a | 23.15 ± 0.05b |
Grassland | 37.84 ± 2.04b | 29.01 ± 4.11a | 0.78 ± 0.06a | 8.02 ± 0.08a | 1.35 ± 0.03a | 16.59 ± 0.01a | 27.46 ± 0.02a |
Construction land | 44.23 ± 2.31a | 27.12 ± 2.22a | 0.72 ± 0.04a | 8.06 ± 0.04a | 1.31 ± 0.02a | 16.15 ± 0.00a | 31.45 ± 0.03a |
Land Use Type | Mean (Mg ha−1) | Standard Error | Min (Mg ha−1) | Max (Mg ha−1) | Skewness | Kurtosis | k—s (p) | CV (%) |
---|---|---|---|---|---|---|---|---|
Cropland | 19.27b | 0.49 | 8.67 | 29.83 | −0.20 | 0.59 | 0.847 | 21.43 |
Grassland | 21.51a | 0.97 | 15.13 | 28.36 | 0.23 | −0.56 | 0.956 | 17.48 |
Forestland | 20.88ab | 1.86 | 17.07 | 25.58 | 0.54 | −1.12 | 0.937 | 17.86 |
Construction land | 18.03b | 1.15 | 13.35 | 27.02 | 0.76 | −0.40 | 0.996 | 24.84 |
Count | Moran’s I | Z (I) | p | Spatial Pattern |
---|---|---|---|---|
103 | 0.26 | 3.55 | <0.01 | clustered |
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Yuan, Y.; Shi, X.; Zhao, Z. Land Use Types and Geomorphic Settings Reflected in Soil Organic Carbon Distribution at the Scale of Watershed. Sustainability 2018, 10, 3490. https://doi.org/10.3390/su10103490
Yuan Y, Shi X, Zhao Z. Land Use Types and Geomorphic Settings Reflected in Soil Organic Carbon Distribution at the Scale of Watershed. Sustainability. 2018; 10(10):3490. https://doi.org/10.3390/su10103490
Chicago/Turabian StyleYuan, Ye, Xueyi Shi, and Zhongqiu Zhao. 2018. "Land Use Types and Geomorphic Settings Reflected in Soil Organic Carbon Distribution at the Scale of Watershed" Sustainability 10, no. 10: 3490. https://doi.org/10.3390/su10103490