| A multi-level evaluation index system is established with farmland protection as the target layer, farmland quantity, farmland quality and farmland sustainable development as the criterion layer. And the index layer includes the quantity change of farmland, per capita farmland area, multiple cropping index, total grain yield, unit grain yield, per capita grain security coefficient, and unit machinery dynamical input. Both expert evaluation method and factor analysis method are used to determine the weight of index. According to the data in farmland area, grain yield and economic development in Urumqi—Changji Economic Zone in the years 1996-2007, a comprehensive evaluation model of intensive farmland use in Urumqi—Changji Economic Zone is established after... |
