粮食主产区耕地保护外部性盈余/赤字测度与分析——以河南省为例

Surpluses and deficits of cultivated land protection externalities in grain-production regions: A case study of Henan Province

  • 摘要: 为科学测度粮食主产区耕地保护外部性盈余/赤字,论文基于耕地保护外部性多层次边界,构建了省级边界和全国边界下典型区域耕地保护外部性盈余/赤字测度模型,并以河南省18个地市为研究区域展开实证分析。结果表明:(1)同一边界下河南省各地市耕地保护外部性盈余/赤字空间分布差异性明显。省级边界下,河南省耕地保护外部性盈余区和赤字区各有9个地市,整体表现为西北部处于赤字区,东北部处于轻度盈余区,西南部处于中高度盈余区。全国边界下,随着人均粮食消费量标准的提高,耕地保护外部性盈余区数量比重降低、赤字区数量比重加大。在人均粮食消费量为380 kg、400 kg、420 kg和435 kg标准下,耕地保护外部性盈余区(地市)数量占比分别为88.89%、83.33%、77.78%和72.22%。(2)多层次作用边界下河南省各地市耕地保护外部性盈余/赤字空间分布差异性明显。具体表现为:同一地市从省级边界到全国边界下耕地保护外部性赤字减弱、盈余增强,或由赤字区转变为盈余区。总之,未来研究应依据不同作用边界下耕地保护外部性盈余/赤字的空间分布规律,结合主体功能区划,构建多层次一体化的耕地保护经济补偿体系,科学界定耕地保护经济补偿的接受区和给付区,制定科学的耕地保护区际经济补偿标准。

     

    Abstract: The concept model of multi-level function boundary of cultivated land protection externalities in a typical zone was advanced in this paper. And the measurement models of surpluses and deficits of a typical zone with cultivated land protection externalities were delineated at provincial and national boundaries to measure the surpluses and deficits of cultivated land protection externalities in grain-production dominated zones of 18 cities in Henan Province. The aim of the study was to measure and analysis surpluses and deficits of cultivated land protection externalities under different boundaries to provide reference for setting standards of inter-regional compensation for cultivated land protection. The results showed that: (1) there were obvious differences in the surpluses and deficits of cultivated land protection externalities among different cities in Henan Province. Under provincial boundary, there were 9 surplus areas and 9 deficit areas. Overall, the northwest was in the deficit area, the northeast in the moderately surplus area and the southwest in the moderately and highly surplus areas. Under the national boundary, the proportion of areas with deficit cultivated land protection externalities increased, and that with surplus cultivated land protection externalities declined with increasing per-capita grain consumption. On per-capita grain consumption levels of 380 kg, 400 kg, 420 kg and 435 kg, the percentages of the areas (cities) with cultivated land protection surplus were 88.89%, 83.33%, 77.78% and 72.22%, respectively. (2) There were obvious differences in spatial distribution of surpluses and deficits of cultivated land protection externalities in areas/cities of Henan Province between at provincial and nation boundaries. From provincial boundary to national boundary, the deficits of cultivated land protection externalities weakened, the surpluses strengthened. Then some areas with deficits changed from deficit to surplus in the same cities. It was concluded that the multi-level compensation systems should be established in the future according to spatial distribution regularities of surpluses and deficits in cultivated land protection externalities in combination with construction of main functional regions. Meantime, the paying areas and accepting areas, as well as standards of economic compensation for cultivated land protection should be defined scientifically.

     

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