南京市快速城市化时期城市用地优化评价实证研究

我国已经进入快速城市化的关键时期。城市用地需求激增，城市空间变化剧烈。按照科学发展观的时代要求,正确评价城市土地的利用水平，促进区域城市的健康和谐发展，具有十分重要的意义。以南京市为例，总结了城市用地建设中存在的城乡失衡、耕地危机、功能削弱、效率降低等主要问题，并尝试建立土地利用优化评价模型，以综合判断在快速城市化阶段城市用地的集约化程度。通过对南京市的实证分析可见，在城市的迅速扩张中，城市用地的确存在集约水平波动的现象，而且不同指标呈现差异化发展趋势。21世纪的城市土地利用，由粗放到集约、由重量到重质、由紊乱到有序是必然选择。

Empirical Study on City's Land-use Value in Quick-urbanization Period in Nanjing

Our country is in the key period of urbanization when the city space changes acutely and the requirement for land increases quickly.According to the demand of the era of scientific development conception,it is of great importance to estimate the utilization level of city land,which can promote the healthy and harmonious development of regional cities.This article takes Nanjing metropolis as an example,summarizes its main problems in city construction,such as the unbalance between urban and rural areas,the crisis of cultivation,weakening of functions,falling of efficiency,etc.It tries to set up a model to value city's land-use,though we can synthetically judge its intensiveness level.By empirical study on Nanjing,we can find that with the quick expansion of city land,the intensiveness level of city land is really undulating,and there are different developing trends to different indexes.It is an inevitable choice for the pattern of city's land-use to turn from extensiveness to intensiveness,from quantity to qualitaty,from choas to order.