Assessment of Land Comprehensive Carrying Capacity in Lin'an City

According to regional characteristics and the actual situation in Lin ’an City, an evaluation index system of land comprehensive carrying capacity composed of three support subsystems （eco-environment, social and economic carrying capaci-ties） containing 22 evaluation indexes was established to evaluate the comprehen-sive carrying capacity of land resource in Lin’an City during 2005-2012. Meanwhile, based on the target data of overal land use plan, the level of land comprehensive carrying capacity was predicted at the end of the plan period （2020） .The results showed that land comprehensive carrying capacity had a significant growth in Lin ’an from 2005 to 2012, and the development trend was basical y sustainable. The sub-systems also had been greatly improved, in which the constant improvement of ec-ological environment carrying capacity made the largest contribution to the constant raising of land comprehensive carrying capacity. The degree of coordination between the systems was poor, in which eco-environment carrying capacity had the maxi-mum growth, far more than the social and economic carrying capacities. According to the land comprehensive carrying capacity in 2020, utilization of land resources in Lin＆#39;an city can achieve sustainable development in general. Final y, proposals of im-proving comprehensive carrying capacity were put forward in terms of the enhance-ment of eco-environment protection, accelerating economic development and policy guidance.

浅谈城市空间规划中的时间流意识——以不同时段上的城市道路功能承担等为例

城市规划的价值在于通过理性指导城市建设,便利、服务城市活动。然而,城市活动的具体内容多变动不居,并不是直线型的恒定流量,且往往浑然一体,无法把彼此严格区别开并置入不同的界域。这就要求改变那种静态、为特定阶段而规划的操作模式,坚持能够照顾城市活动延续性、变动性等特征的动态、历时性规划。城市规划不能只是暂时性地解决空间资源的优化组合,还要回应城市活动接替演进在时序上的要求。某些城市空间问题的产生,即与规划中缺乏此种观念自觉有关。把时间流意识引入城市规划,有助于促进城市规划由平面规划向纵深规划转变,增进规划的持续有效性。文章以不同时间节点上的城市道路功能承担等为例进行了剖析。