山东省土地适宜性空间分析及其优化配置研究

Spatial analysis and optimal allocation of land resources based on land suitability evaluation in Shandong Province

基于山东省自然、社会、经济统计资料及图形资料,运用GIS地理空间分析方法,对山东省土地适宜性进行评价,同时对区域土地资源自然质量指数、土地资源综合适宜度、相对适宜度进行研究。通过对适宜评价图和利用现状图的空间叠加,计算、分析了待调整土地资源的多度及重要值。以土地资源空间分析为基础,多度、重要值为依据,进行土地资源空间优化配置。结果表明,优化后农用地减少10994.82hm2,林牧用地增加13083.56hm2,未利用地减少1438.83hm2。

Based on the land suitability evaluation, with the spatial analysis method of GIS the natural quality index, the comprehensive suitable degree and relative suitable degree of land resources were studied. The current land use map and suitability evaluation map were analyzed contrastively using GIS spatial analysis function. The diversity and important value of unsuitable land resources were calculated based on the spatial analysis. The optimal allocation scheme was finally completed following the adjustment principle of unsuitability land resources, which is established based on the diversity and important value. The optimal allocation results show the optimized agricultural land areas reduced by 10994. 82 hm2 compared with the current agricultural land areas; forest and grazing land areas increased by 13083.56 hm2 compared with the current conditions; uncultivated land areas reduced by 1438.83 hm2.