耕地多功能权衡与协同关系的尺度效应——以武汉城市圈为例

探讨耕地多功能权衡与协同关系的尺度效应对有效的耕地保护和可持续利用具有重要意义。以武汉城市圈为例,在建立评价指标体系开展耕地多功能评价的基础上,运用斯皮尔曼(Spearman)相关分析法,从4级尺度分析揭示耕地多功能权衡与协同关系的尺度变化规律。结果显示:耕地单项功能指数和多功能指数在不同尺度上呈现较明显的空间分异。耕地各功能之间的权衡与协同关系具有尺度效应,随着尺度的变化而变化。该研究可为不同层级管理决策者实施差异化耕地保护联动策略,进而促进耕地的多功能协同效应与可持续利用提供依据。

Scale effects of trade-offs and synergies of multifunction of cultivated land: evidence from Wuhan Metropolitan Area

It is of significance to explore the scale effect of trade-offs and synergies of multifunction of cultivated land for the effective protection and sustainable utilization of cultivated land. Thus, Wuhan Metropolitan Area, China, was selected as the study area to explore the trade-offs and synergies of multifunction of cultivated land at multiple scales based on the establishment of evaluation system of multifunction of cultivated land and Spearman’s rank correlation. It was shown that the single function index and multi-function index of cultivated land had obvious spatial difference. The trade-offs and synergies within cultivated land functions had scale effect, which would change with the changing scale.These findings might provide basis for policy-makers to implement appropriate measures for the protectection of multifunction of cultivated land at the right spatial scale, and to promote higher-level synergies of multifunction of cultivated land to realize sustainable utilization.