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中文摘要：
开发区土地集约利用程度是城市开发区存在和发展的基础，直接关系到区域土地可持续利用．根据土地报酬递减规律和土地投入产出的特点，在分析开发区土地集约利用内涵基础上选取了21个指标，按照层次分析方法分为3个层次，分别确定各层次指标的权重，以江苏省18个典型城市开发区调查数据为例，对开发区土地集约利用进行评价．结果表明：开发区土地集约利用水平可分为五个等级：Ⅰ级区，主要包括苏州吴中经济开发区、苏州中新工业园区、无锡新区、江阴经济开发区；Ⅱ级区，主要包括苏州市相城区；Ⅲ级区，主要包括太仓市经济开发区、太仓市港口开发区、无锡市宜兴县诸桥工业区、扬州经济技术开发区、扬州宝应县安宜民营工业园；Ⅳ级区，主要包括苏州市高新区、昆山经济开发区、无锡市宜兴县环保科技工业园、如东经济开发区、赣榆经济开发区、宿迁经济开发区；Ⅴ级区，主要包括新沂经济开发区、东台城北新区．开发区土地集约利用水平在区域上，苏南地区水平高于苏中和苏北地区，而苏中地区高于苏北地区．在上述的分析结论的基础上，提出改善开发区土地集约利用程度的相关建议．
英文摘要：
It is of important theoretic and practical significance to analyze the level of land intensive use in the city development zones. Land intensive use includes four aspects-land intensive use of different types, land use with the optimized construction, superior synthesizing benefits of land use, excellent realization of land use in the region. Based on methods of analytic hierarchy process （AHP） and taking developing districts of 18 cities in Jiangsu Province as examples, twenty-one indexes are chosen to analyze the level of land intensive use, including land input, land output, land use construction and sustainable land use. Four grade systems of land input and output indexes of land intensive use are set up. There are evident disparities in land use intensivity of developing districts in Jiangsu Province and the economic benefits of land output display an obvious trend in land intensive use. The levels of land intensive use are divided into five grades： super intensive （the land supply is in shortage）, intensive （the land supply is in an equilibrium state）, less intensive （the land supply is equilibrium in a certain period）, not intensive （the land supply is equilibrium in a certain period）, and lower intensive （there are some idle land）. Generally speaking, land intensive use is different in Jiangsu P,-ovince. Levels of land intensive use of city developing districts in the south part are evidently higher than in other regions. Based on the above analysis, some related suggestions about how to increase the level of land intensive use are proposed.
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