ANALYSIS ON SPATIAL AND TEMPORAL VARIATION OF COAL CITIES LAND USE OVERALL EFFICIENCY IN HEILONGJIANG PROVINCE
构建了煤炭城市土地利用综合效率评价体系，以黑龙江省煤炭城市为例，定量分析了2002-2007年土地利用综合效率的时空变化，发现效率呈上升趋势但协调度先升后降。
Quantitative analysis and evaluation of the overall efficiency of coal urban land use and to determine their spatial distribution,to provide a scientific basis for rational and intensive use of coal urban land.In this paper,the coal city of Heilongjiang Province,for example,from efficiency of land investment,land use efficiency,land productivity efficiency and land eco-efficiency of influencing the overall efficiency of urban land use as element layers to build the overall efficiency evaluation system of land use of the coal city of Heilongjiang Province,the optimal combination empowering method to determine the use of index weight,adopt a multi-objective comprehensive evaluation method to quantitative analysis the overall efficiency of land use for 2002-2007.The results showed that the coal city of Heilongjiang Province,six-year period,the overall efficiency of land use was on the rise;the land into effective,land-use efficiency,land productivity,efficiency and ecological benefits of land use are some differences on the impact of the overall efficiency;The trend of land-use coordination degree was first increased and then decreased,the decline of land-use coordination degree will become an obstacle to further growth of overall efficiency of land use.