Journal of Geographical Sciences ›› 2018, Vol. 28 ›› Issue (11): 1626-1640.doi: 10.1007/s11442-018-1533-6
• Special Issue: Land system dynamics: Pattern and process • Previous Articles Next Articles
Shuqin SHI1,*(), Yu HAN1, Wentao YU1, Yuqing CAO1, Weimin CAI1(
), Peng YANG2, Wenbin WU2, Qiangyi YU2,*(
)
Received:
2017-03-05
Accepted:
2017-10-09
Online:
2018-11-20
Published:
2018-11-20
Contact:
Shuqin SHI,Qiangyi YU
E-mail:ssq0533@163.com;2771215@sina.com;yuqiangyi@caas.cn
About author:
Author: Shi Shuqin, PhD and Professor, specialized in agricultural remote sensing and land use evaluation. E-mail:
Supported by:
Shuqin SHI, Yu HAN, Wentao YU, Yuqing CAO, Weimin CAI, Peng YANG, Wenbin WU, Qiangyi YU. Spatio-temporal differences and factors influencing intensive cropland use in the Huang-Huai-Hai Plain[J].Journal of Geographical Sciences, 2018, 28(11): 1626-1640.
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Table 1
Evaluation index system of the intensity of cropland use"
Target layer | Criterion layer | Index layer | Metering method | Effect | Weights |
---|---|---|---|---|---|
Intensive utilization of cultivated lands | Input intensity | Labor input per unit area | Population employed in agriculture per unit area of cropland | + | 0.2565 |
Fertilizer input per unit area | Application of fertilizers per unit area of cropland | + | 0.2148 | ||
Pesticide input per unit area | Application of pesticides per unit area of cropland | + | 0.2850 | ||
Power input per unit area | Total power of agricultural machinery per unit area of cropland | + | 0.2437 | ||
Utilization degree | Cultivation index | Area of cropland/Total area of all lands | + | 0.2252 | |
Irrigation index | Area of effective irrigation per unit area of cropland | + | 0.2235 | ||
Stable yield index | Security areas/Seeded area | + | 0.5515 | ||
Output effect | Output value of every farmer | Total output value of agriculture/ Population of agricultural employment | + | 0.5646 | |
The production of foodstuff | Total production of foodstuff/Seeded area | + | 0.1613 | ||
The production of foodstuff of every farmer | Total production of foodstuff/Population employed in agriculture | + | 0.2740 | ||
Continued situation | Non-agriculture index | Non-agriculture/Total population | - | 0.6725 | |
Per capita net area of croplands | Total area of lands/Total population | + | 0.3275 |
Table 2
Selected influencing factors, their influence value and proportion"
Influencing factors | Code | Variables | Unit | Influence value | Proportion (%) | |
---|---|---|---|---|---|---|
Natural resources conditions | Elevation | X1 | Average elevation | m | 0.143 | 23.55 |
Slope | X2 | Average slope | ° | 0.129 | 21.23 | |
Temperature | X3 | Annual average temperature | ℃ | 0.042 | 6.94 | |
Precipitation | X4 | Annual average precipitation | mm | 0.051 | 8.37 | |
Natural disasters | X5 | Natural hazard rate | % | 0.158 | 25.9 | |
Social, economic, and policy conditions | Economic development state | X6 | Gross domestic product | 10,000 | 0.013 | 2.17 |
Supportive policy | X7 | Agricultural subsidy | 10,000 | 0.006 | 1.03 | |
Urbanization extent | X8 | Built-up area | Ha | 0.012 | 2.03 | |
Transport condition | X9 | Density of road network | m/ha | 0.054 | 8.78 |
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