Evaluation Of The Land Consolidation Potential Of Rural Residential Areas Based On Importance Of Attribute Of Rough Set

Accompanied by the accelerated process of urbanization, structural adjustmentand optimization of urban and rural land has become the focus of land use planning,and how urban and rural development, a reasonable construction of new countryside,has become one of the problems to be solved in the new period. Rural settlements asan important part of rural land use through the village, alteration, relocation, and pointof regulation of empty villages, adjust land use structure of the way rural residentialland consolidation, to improve rural land use intensification, and maintenance of thetotal arable land balance and the promotion of new rural construction is of greatsignificance.At present, scholars from the potential of evaluation, the driving force ofresearch and collation mode of multiple perspectives on issues of Rural ResidentialLand Consolidation. Evaluation studies, but in the potential of the rule of thumb isusually selected indicators and given the value of the weights based on expert opinion,without taking into account the fuzziness of the subjective judgment, it is difficult tobe objective and accurate.In this paper, the principle of the importance of attributes in rough set theory toevaluate the potential Rural Settlement Consolidation of Lanzhou Qilihe. From thestatus of land use, economic and social development, the village production of LivingConditions of the three factors of the primary14of the Assessment Indicators QiliheDistrict, Lanzhou City, rural residential consolidation potential evaluation indexsystem, after its standardization of data and discrete rough set its initial reductiontheory, after the initial reduction, the weight properties of nuclear reduction andhierarchical calculating the indicator system according to the principle of theimportance of attributes in rough set theory, rural settlements of the last Qilihepotential evaluation value.The results showed that,（1） Based on the principle attributes of the importance of attributes in rough settheory about simple departure from the set of attributes as a whole preferred a higher degree of importance of the attributes to achieve the purpose of reduction. Nuclearreduction to retain the rural residential area per capita （X₁）, idle settlementsconstruction per capita land area （X₄）, per capita GDP （X₆）, the urbanization rate （X₉）and the degree of public support (X₁₀) and other five indicators to retain indicatorsbelong to the status of land use, economic and social development, villages,production and living the status quo, and other factors, the reduction of evaluationindex system structure remains unchanged.（2） The importance of the principle of rough set attribute dependence andvarying degrees of interaction between each indicator can be quantified, based on theconcept of knowledge sets in rough set theory attribute importance to calculate theweight factor layer and the properties of the factor layer. Factor layer of Ra on theevaluation index system, the weight of0.55, factor layer Rb second factor layer Rcminimum weight of0.18.（3）As the result of estimated potential evaluation value,unit U4is a potentialarea belong to grade Ⅰ; U₅, U₂U₁, U₃, U₇, followed by the case of class II potentialareas; U₆, the U₈is belong to class III potential area.