基于TOPSIS模型的甘肃省2010—2018年土地利用空间效益评价

Spatial benefit evaluation of land use in Gansu Province from 2010 to 2018 based on TOPSIS mode

为了探寻甘肃省土地利用效益的演变情况,从土地利用经济效益、社会效益和生态效益三个方面构建指标体系,综合利用2010—2018年甘肃省14个地级市的土地利用综合效益数据,应用TOPSIS模型和logistic回归分析模型对甘肃省土地利用效益进行评价及预测。结果表明:(1)甘肃省土地利用综合效益随着时间的变化呈现出先增加而后趋于平缓的发展趋势;(2)甘肃省土地利用整体综合效益增幅为500%;(3)甘肃省土地利用社会效益的增长最为明显,增幅为944.44%。同时,如陇南和临夏市个别市土地利用生态效益水平较低,有待进一步的提高。该研究利用9年数据对甘肃省土地利用综合效益进行评价,为今后甘肃省土地的高效利用及优化配置提供借鉴与参考,为政府开展土地利用规划决策提供理论支撑。

In order to the evolution of land use benefits in Gansu Province, we selected land use economic benefits, social benefits and ecological benefits as indicators to evaluate the comprehensive land use benefit data of 14 prefecture-level cities in Gansu Province from 2010 to 2018. The TOPSIS model and logistic regression analysis model were used to evaluate and predict the land use benefits in Gansu Province. The results showed that:(1) The comprehensive benefits of land use in Gansu Province first increased and then gradually decreased along with time.(2) The overall comprehensive benefits of land use in Gansu Province showed 500% increase.(3) The increase range of social benefits was the largest, with an increase of 944.44%. However, some cities such as Longnan and Linxia had lower ecological benefits of land use than other cities. This study took 9 years of data to evaluate the comprehensive benefits of land use in Gansu Province, which could provide reference and theoretical support for the efficient use and optimal allocation of land in Gansu Province for the government.