Analysis of the Ecosystem Soil Conservation Function Based on the Major Function-Oriented Zones across the Yangtze River Economic Belt, China
Abstract
:1. Introduction
2. Materials and Methods
2.1. Study Area
2.2. Methods
2.2.1. Land Use Dynamics
2.2.2. Soil Conservation Assessment
Rainfall Erodibility Factor (R)
Soil Erodibility Factor (K)
Topographic Factor (LS)
Vegetation Cover Factor (C)
Erosion Control Practice Factor (P)
2.2.3. Change Trend Analysis
2.3. Data Sources
2.3.1. Land Use Datasets
2.3.2. Major Function-Oriented Zones
2.3.3. Other Data
3. Results
3.1. Analysis and Changes in Land Use
3.1.1. Land Use Analysis in 2015
3.1.2. Land Use Changes between 2010 and 2015
3.2. Analysis and Changes in the Soil Conservation Function
3.2.1. Analysis of the Soil Retention in the YREB
3.2.2. Spatial and Temporal Characteristics for the Soil Retention Rate
4. Discussion
4.1. Matching or Not towards Functional Orientation of the MFOZs
4.2. Strengths, Weaknesses and Future Research of This Analysis
5. Conclusions
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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Land Use | Woodland | Grassland | Cropland | Others | |||
---|---|---|---|---|---|---|---|
Flat | Hills | Mountainous | Steep Slope (>25°) | ||||
p value | 1 | 1 | 0.20 | 0.35 | 0.65 | 0.80 | 1 |
First-Level Classes | Second-Level Classes |
---|---|
Woodland | Forest, Shrub, Woods, Others |
Grassland | Dense grass, Moderate grass, Sparse grass |
Cropland | Paddy land, Dry land |
Water body | Stream and rivers, Reservoir and ponds, Lakes, Permanent ice and snow, Bottomland, Beach and shore |
Built-up land | Urban land, Rural residential land, Other construction land |
Unused land | Sandy land, Gobi, Salina, Swampland, Bare soil, Bare rock, Others |
Types | Major Function | Description | |
---|---|---|---|
Optimal development zones | Massive urbanization and industrialization | Areas with high development density and population density | |
Key development zones | Areas with great development potential for industrialization and urbanization | ||
Restricted development zones | Agricultural production zones | Providing of agricultural products | Mainly including the national major grain producing counties |
Key ecological function zones | Providing of ecological products and services | Protecting crucial ecosystem functions and fragile ecological systems | |
Prohibited development zones | Protection of natural and cultural heritage | Protected areas, such as national nature reserves, national forest parks, national scenic spots and national geological parks |
Zones | Area of Built-Up Area (×104 km2) | Proportion of Urban Land (%) | Proportion of Rural Residential Land (%) | Proportion of Other Construction Land (%) |
---|---|---|---|---|
Optimal development zones | 1.03 | 46.40 | 42.84 | 10.76 |
Key development zones | 1.32 | 32.07 | 42.01 | 25.92 |
Agricultural production zones | 2.31 | 14.24 | 73.74 | 12.02 |
Key ecological function zones | 0.23 | 17.20 | 41.12 | 41.68 |
Cropland | Woodland | Grassland | Water Body | Built-Up Land | Unused Land | |
---|---|---|---|---|---|---|
Optimal development zones (ODZs) | −0.78 | −0.09 | 2.02 | −0.01 | 1.75 | 0 |
Key development zones (KDZs) | −0.38 | −0.12 | −0.10 | 0.10 | 4.14 | 2.21 |
Agricultural production zones (APZs) | −0.13 | −0.06 | 0 | 0.32 | 1.89 | 0.41 |
Key ecological function zones (KEFZs) | −0.14 | −0.02 | −0.01 | 0.42 | 9.85 | 0 |
Classification | Variation of Soil Retention Rate during 2010 and 2015 | |
---|---|---|
Area (×104 km2) | Ratio (%) | |
Obvious degradation | 8.65 | 4.22 |
Slight degradation | 38.42 | 18.74 |
Stable | 99.44 | 48.51 |
Slight restoration | 43.95 | 21.44 |
Obvious restoration | 14.54 | 7.09 |
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Wu, D.; Zou, C.; Cao, W.; Liu, L. Analysis of the Ecosystem Soil Conservation Function Based on the Major Function-Oriented Zones across the Yangtze River Economic Belt, China. Sustainability 2018, 10, 3425. https://doi.org/10.3390/su10103425
Wu D, Zou C, Cao W, Liu L. Analysis of the Ecosystem Soil Conservation Function Based on the Major Function-Oriented Zones across the Yangtze River Economic Belt, China. Sustainability. 2018; 10(10):3425. https://doi.org/10.3390/su10103425
Chicago/Turabian StyleWu, Dan, Changxin Zou, Wei Cao, and Lulu Liu. 2018. "Analysis of the Ecosystem Soil Conservation Function Based on the Major Function-Oriented Zones across the Yangtze River Economic Belt, China" Sustainability 10, no. 10: 3425. https://doi.org/10.3390/su10103425