基于政策驱动的土地利用转型对土地 多功能利用的影响——黑河中游案例研究

Influence of Policy-Driven Land Use Transformation on Multifunctional Land Use in the Middle Reaches of the Heihe River Basin

以黑河中游为研究区,基于土地利用转型分析和土地多功能利用评价,探讨2000—2014年期间土地政策对多功能性的影响。结果表明:1)黑河中游土地利用转型明显,生活用地增加一倍,生产用地增加1/3,生态用地基本上平衡;2)土地利用功能增加近一倍,多角度利用更加充分,社会功能和经济功能是主要的土地利用功能,且提升较大;环境功能和文化功能相对较弱,提升较小;3)土地政策在很大程度上影响了土地多功能利用。土地开发整理对就业支持、土地生产和资源维持等功能有显著的影响,耕地非农化管控能够有效地提高社会保障功能和经济供给功能,退耕还林还草工程对土地利用多功能的影响不显著。

Selecting the middle reaches of the Heihe River as the study area,with a dataset including land cover,geospatial,physical geography and social statistical data,the paper discusses the influence of land use policies on land multifunction from 2000 to 2014,based on land use transformation analysis and assessment on multifunctionality of land use.The results indicate that the land use transformation of the study area is distinct.Land of living doubled in the period and land of manufacture increased by 33%.Ecological land remained unchanged basically.The functions of land doubled.Social and economic functions are the main features of land use and improve a lot.Environmental and cultural functions are weaker than social and economic functions.Land policy has largely affected the land’s multifunctional use.Land development have influenced on employment,manufacture and resource maintenance.Occupied farmland for construction can improve the social security and economic supply function,while the influence of returning farmland to forest and grass on land use multi-function is not significant.