资源潜力投入重心时空演变轨迹

地质勘查投入是反映我国资源潜力投入的重要依据。以我国2000—2017年地质勘查资金投入数据,通过区域重心法计算资源潜力投入重心,基于ArcGIS平台刻画我国资源潜力投入重心移动轨迹,并对重心迁移影响因素分析。结果表明:过去的18年间,我国资源潜力投入重心整体自东向西迁移,移动轨迹沿正西→西北→西南→西北方向运动,迁移距离为294.31 km,移动速度呈现先快后慢再加快的趋势。中央资源潜力投入重心由陕西省迁移到甘肃省,迁移轨迹受政策影响明显。“胡焕庸线”位于资源潜力投入重心的右侧,前期资源潜力投入重心向胡焕庸人口密度线右侧移动,偏离程度增加,后期两者偏离程度减小。资源潜力投入重心迁移轨迹与区域成矿地质环境和国家矿产勘查开发政策、矿产品价格、环境政策有关,但有一定的时间滞后性。

The Spatial and Temporal Movement Orbit of Resource Potential Investment Gravity Center

Geological exploration investment is an important basis for reflecting China s resource potential investment.According to the data of China s geological exploration capital input from 2000 to 2017,this paper focused on calculating the gravity center of resource potential investment.Based on the ArcGIS platform,this paper described the movement orbit of China s resource potential investment gravity center and analyzed the factors affecting the movement.The results showed that:(1)In the past 18 years,the general trend of China s resource potential investment gravity center movement migrated from east to west,and the movement track followed the direction from due west to northwest,southwest to northwest,the migration distance covering 294.31 km.The moving speed was fast first,slow second and then accelerated.(2)The gravity center of the central resource potential investment moved from Shaanxi Province to Gansu Province,and the migration trajectory was significantly affected by the policy.(3)“Hu Huanyong s Line”was located on the right side of the gravity center of resource potential investment.In the early stage,the gravity center of resources potential investment moved to the right of“Hu Huanyong s Line”,and the deviation between the gravity center and the population density line increased.But in the later period,the deviation decreased.(4)The potential trajectory of resource potential input was related to numerous factors,including the regional metallogenic geological environment,the national mineral exploration and development policies,the price of mineral products and environmental policies,but there was a certain time lag.