Assessment of Cultivated Land Productivity and Its Spatial Differentiation in Dongting Lake Region: A Case Study of Yuanjiang City, Hunan Province
Abstract
:1. Introduction
2. Data Collection and Analysis
2.1. Survey of Research Area
2.2. Data Collection and Preprocessing
2.3. Analytical Methods
2.3.1. The Definition of Cultivated Land Productivity
2.3.2. Calculation of Cultivated Land Productivity
3. Results and Discussion
3.1. The Quantitative Structure of Cultivated Land Productivity
3.2. Spatial Distribution Characteristics of Cultivated Land Productivity
3.3. Comparative Analysis of Cultivated Land Productivity Index and National Use Index
4. Discussion and Conclusions
4.1. Discussion
4.2. Conclusions
Author Contributions
Funding
Conflicts of Interest
References
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Primary Indicator | Secondary Indicator | Weight | ||
---|---|---|---|---|
Cultivated land productivity | Climate condition | Light and temperature productivity potential Crop yield ratio | -- -- | |
Cultivated land quality | Geological conditions | Terrain area | 0.50 | |
Field slope | 0.50 | |||
Soil properties | Effective soil thickness | 0.12 | ||
Organic matter content | 0.11 | |||
Farming layer texture | 0.21 | |||
Obstacle course type and depth from the surface | 0.04 | |||
Soil configuration | 0.21 | |||
Soil bulk density | 0.10 | |||
Soil nutrient element | 0.21 | |||
Tillage technology | Irrigation guarantee rate | 0.16 | ||
The drainage condition | 0.30 | |||
Disease and insect pest control level | 0.08 | |||
Field flood control standard | 0.07 | |||
Agricultural machinery and equipment | 0.26 | |||
Agronomic management | 0.13 |
Productivity Index | |||||||||
---|---|---|---|---|---|---|---|---|---|
[3900, 4200] | [3600, 3900] | [3300, 3600] | [3000, 3300] | [2700, 3000] | [2100, 2400] | [1800, 2100] | |||
Land type | Paddy field | Area (hectare) | 4024.89 | 22,228.28 | 10,757.33 | 5918.24 | 56.26 | —— | —— |
Ratio (%) | 9.36 | 51.71 | 25.03 | 13.77 | 0.13 | —— | —— | ||
Irrigated land | Area (hectare) | —— | —— | —— | —— | —— | 48.49 | 5.92 | |
Ratio (%) | —— | —— | —— | —— | —— | 89.11 | 10.89 | ||
Dry land | Area (hectare) | —— | —— | —— | —— | —— | 16,050.93 | 4728.60 | |
Ratio (%) | —— | —— | —— | —— | —— | 77.24 | 22.76 | ||
Total | Area (hectare) | 4024.89 | 22,228.28 | 10,757.33 | 5918.24 | 56.26 | 16,099.43 | 4734.52 | |
Ratio (%) | 6.31 | 34.83 | 16.86 | 9.27 | 0.09 | 25.23 | 7.42 |
Grade Section of Cultivated Land Productivity Index | Technical Level | Cultivated Land Quality | Climate Condition |
---|---|---|---|
[3900, 4200] | 0.99 | 0.76 | 1 |
[3600, 3900] | 0.75 | 0.64 | 1 |
[3300, 3600] | 0.41 | 0.56 | 1 |
[3000, 3300] | 0.02 | 0.51 | 1 |
[2700, 3000] | 0 | 0.15 | 1 |
[2100, 2400] | 0.54 | 0.70 | 0 |
[1800, 2100] | 0.41 | 0.52 | 0 |
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Zhao, C.; Zhou, Y.; Li, X.; Xiao, P.; Jiang, J. Assessment of Cultivated Land Productivity and Its Spatial Differentiation in Dongting Lake Region: A Case Study of Yuanjiang City, Hunan Province. Sustainability 2018, 10, 3616. https://doi.org/10.3390/su10103616
Zhao C, Zhou Y, Li X, Xiao P, Jiang J. Assessment of Cultivated Land Productivity and Its Spatial Differentiation in Dongting Lake Region: A Case Study of Yuanjiang City, Hunan Province. Sustainability. 2018; 10(10):3616. https://doi.org/10.3390/su10103616
Chicago/Turabian StyleZhao, Chong, Yong Zhou, Xigui Li, Pengnan Xiao, and Jinhui Jiang. 2018. "Assessment of Cultivated Land Productivity and Its Spatial Differentiation in Dongting Lake Region: A Case Study of Yuanjiang City, Hunan Province" Sustainability 10, no. 10: 3616. https://doi.org/10.3390/su10103616