Division of key cultivated land regions based on calculation of comprehensive productivity in Hebei province
文献类型：EI期刊论文
| 作者 | Men Mingxin ; Zhang Junmei ; Liu Yu ; Li Xinwang ; Xu Hao |
| 发表日期 | 2009 |
| 关键词 | Crops Land use Linear regression Network security Productivity Zoning |
| 英文摘要 | The essential of protecting the cultivated land was to protect the comprehensive production capacity. It was the fundamental measure for ensuring resources security and sustaining productivity stability of the cultivated land to divide the cultivated land into different ranks according to the production capacity. The theoretical production capacity of cultivated land was obtained from the linear regression model which was established with the relationship of the natural quality ranks and the standard crop yield per unit from theoretical sampling investigation data on the basis of agricultural land classification. And the practical production capacity of cultivated land was obtained from the linear regression model established with the relationship of the land use quality ranks and the standard crop yield per unit from practical sampling investigation data. Then the scale advantage index and the aggregated advantage index of cultivated land were put forward to analyze the spatial distribution pattern of comprehensive productivity. Combing with the future potential productivity, current productivity and the input and output status, cultivated land in Hebei province was divided into four protective classes. The first class was the state-level protection region. The area was 2.02 ×106 hm2 which accounted for 32.1% of the total area. The second class was the provincial-level protection region and the area was 2.98×106 hm2. The third-level protection region was the municipal-level protection region which accounted for 30.1% of the total cultivated land in Hebei province. The rest was classified as the fourth-level which accounted for 9.7% of the total area. By the division of protected regions and definition of the protective duties of different subjects, it was of great realistic meanings to stabilize agricultural production and to ensure food security. |
| 出处 | Nongye Gongcheng Xuebao/Transactions of the Chinese Society of Agricultural Engineering
 |
| 卷 | 25期:10页:264-271 |
| 收录类别 | EI |
| 语种 | 英语 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/24688]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Men Mingxin,Zhang Junmei,Liu Yu,et al. Division of key cultivated land regions based on calculation of comprehensive productivity in Hebei province. 2009. |
入库方式： OAI收割
来源：地理科学与资源研究所
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