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| 海河冲积平原区耕地综合产能核算及其分区利用 | |
| 引用本文： | 刘 玉,刘彦随,薛 剑,许 皞.海河冲积平原区耕地综合产能核算及其分区利用[J].资源科学,2009,31(4):598-603. |
| 作者姓名： | 刘 玉 刘彦随 薛 剑 许 皞 |
| 作者单位： | 1. 中国科学院地理科学与资源研究所,北京,100101;中国科学院研究生院,北京,100049 2. 中国科学院地理科学与资源研究所,北京,100101 3. 国土资源部土地整理中心,北京,100035 4. 河北农业大学资源与环境科学学院,保定,071001 |
| 基金项目： | 国家自然科学基金重点项目（编号：40635029）；中国科学院知识创新工程重大项目（编号：KSCX-YW-09） |
| 摘 要： | 农用地分等成果为耕地综合产能核算提供了新思路，为耕地整理质量评价提供新方法。以海河冲积平原区为例，基于农用地分等成果，通过抽样补充调查，依据自然等指数与理论抽样样点构建理论产能核算模型，利用等指数与可实现抽样样点构建了可实现产能核算模型，结合近3 年（2003年～2005年）的粮食实际产量，并进行了综合产能核算。结果表明：全区耕地理论产能为2970×104t，可实现产能为2260×104t，远高于近3年1430×104t的年均粮食实际产量，表明目前海河冲积平原区粮食安全的耕地资源保障程度较高。通过分析耕地综合产能、利用强度及其增产潜力，将研究区耕地利用划分为核心保护区、优化提升区和重点整理区，并提出相应的利用对策。 |
| 关 键 词： | 理论单产 耕地综合产能 耕地分区利用 海河冲积平原区 |
Calculation of the Integrated Productive Capacity and Subarea Utilization of Cultivated Land in Alluvial Plain Area of Haihe River |
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| LIU Yu,LIU Yansui,XUE Jian and XU Hao.Calculation of the Integrated Productive Capacity and Subarea Utilization of Cultivated Land in Alluvial Plain Area of Haihe River[J].Resources Science,2009,31(4):598-603. | |
| Authors: | LIU Yu LIU Yansui XUE Jian and XU Hao |
| Abstract: | The potential grain productivity in China and the future changing tendency of its supply-demand relations have aroused widespread concerns from domestic and international theoretical researchers as well as policy makers. Industrialization and urbanization would increase the demand for grain, but could reduce cultivated land and water resources, which would consequently affect the supply of grain. To prevent cultivated land from diminishing and improve the integrated productive capacity have become the rational choice for our grain development strategy at the beginning of the new century. The results of agricultural land classification provide a new consideration to calculate the comprehensive production capacity of cultivated land and a new approach to evaluate the consolidation quality of cultivated land. Taking alluvial plain area of Haihe river as an example, based on agricultural land classification and gradation results, we employed supplementary sampling points, indices of natural quality and land use to construct theoretical production capacity model, while using indices of natural quality and sampling points to construct realizable production capacity models. Comprehensive production capacity was obtained from statistical data of actual grain yields of three years(2003~2005). The results showed that theoretical and realizable production capacity in this region were 29.7×106ton and 22.6×106ton respectively, which were higher than the annual average yield of actual grain production, which was 14.3×106ton. The large gap between theoretical and practical production capacity secured a high degree of cultivated land recources for grain security at present. Through combined analysis of comprehensive production capacity, production growth potential and utilization intensity, we divided the alluvial plain area of Haihe river into three regions: key protection region, optimization region and major consolidation region. The major consolidation areas are mainly in the alluvial plain area, the south centre of Hebei. Restricted by irrigation condition and infrastructure of farmland management capacity, the practical grain production is low, but there is a great potential. Sub-area utilization of cultivated land provides scientific basis for land consolidation planning, the setting of land consolidation projects and its implementation. So it is of great realistic meanings to stabilize agricultural production and ensure food security. |
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