湖北省耕地产能核算及空间变异规律

基于农用地分等成果和农业统计数据,建立产能核算模型并对湖北省耕地产能进行测算,分析省域尺度不同层次耕地单产的空间分异特点.结果表明不同层次耕地单产分异规律相似,表现出中-中东高西部低的格局;3个层次耕地单产的空间聚集顺序是理论单产>可实现单产>实际单产,而3个层次产能的局部空间自相关以H-H型和L-L型为主,并以江汉平原腹地为中心形成了一个湖北省耕地单产的热点(高峰)地区.研究结果对深化耕地资源数量、质量并重管理,促进耕地和经济协调发展具有参考价值.

Research on productivity calculation and spatial variation characteristics of cultivated land in Hubei Province

On the basis of cultivated land classification results and investigating supplementary sampling points, model of evaluating productivity was established, and then the accounting of agricultural productivities in Hubei Province was carried out, its spatial variation characteristics under the province-scale was analyzed. The results showed that the spatial variation law of agricultural productivities at different levels could be basically same. The accumulation order of three levels productivity was theoretical productivity per unit〉realizable productivity per unit〉 actual productivity per unit. The total area in H-H （high spatial autocorrelations） and L-L （low spatial autocorrelations） was primary, and the agricultural productivities in Jianghan Plain and its adjacent regions was extremely obvious and gradually had become hot area. The result was important to deepen management of balance between quantity and quality of cultivated land resources, promote harmonious development for food security and economy.