欠发达地区土地利用多功能化演变的时空轨迹:来自西北典型城市的证据

Spatiotemporal trajectories of land use multifunctional evolution in less-developed regions: evidence from typical cities in Northwest China

选取反映土地利用生产功能、生活功能和生态功能各方面的21项指标,采用熵权法、三角模型、耦合协调度模型,从时空角度对西北典型城市土地利用多功能化演变的发展现状、趋势、耦合协调度进行了探究.结果表明:2005—2015年西北典型城市土地利用多功能化水平及土地持续利用状态稳步提升,土地利用多功能化由无序发展模式转变为有序模式;土地利用由单一功能占主导地位逐渐向多功能转变,重心由生产功能逐渐转变为生活和生态功能;土地利用多功能协调性呈现波动提升态势,至2015年基本呈现“东高西低”格局.欠发达地区土地利用多功能化水平不断提升,土地利用系统和谐度有待提高.

The purpose of this study is select 21 indicators that reflect various aspects of land use production functions, living functions and ecological functions, and explore the development status, trends, and coordination of land use multifunctional evolution in typical cities in Northwest China from the perspective of space and time.The methods of literature research, entropy weight method, triangle model and coupling coordination degree.The results show that: From 2005 to 2015,the level of multifunctionalization of land use and the continuous use of land in typical cities in Northwestern China have steadily improved, and the multifunctionalization of land use has changed from a disorderly development mode to an orderly mode;Multifunctional transformation, with the focus gradually shifting from production functions to living and ecological functions;The multifunctional coordination of land use has shown a trend of fluctuation and improvement.By 2015,it will basically show a pattern of “east high and low west”.In conclusion, the level of multifunctionalization of land use in underdeveloped areas has been continuously improved, and the harmony of the land use system needs to be improved.