基于生态足迹的南京市生态安全评估

采用生态足迹、生态压力指数和生态可持续指数评估体系,对南京市生态安全进行了评价。研究表明,南京市1996年、2005年、2006年、2007年均出现生态赤字,生态安全受到胁迫;生态压力指数分别为6.32、13.45、13.95、13.92;生态可持续指数处于＂强不可持续＂。生态安全一直处于极不安全状态,其发展模式处于不可持续状态。造成生态安全危机的主要因素是资源过度消耗、人口数量大和城市扩张导致耕地减少等。

Assessment of Ecological Safety Based on the Ecological Footprint of Nanjing

In this paper,the ecological footprint of the evaluation and ecological tension index and ecological sustainability index system is used to evaluate ecological safety of Nanjing City.The result shows there were ecological deficit in 1996,2005,2006,2007 and ecological safety was under duress and ecological tension index of Nanjing City in 2001,2003,2005 were 6.32,13.45,13.95,13.92 respectively and ecological sustainability index of Nanjing City in Non-sustainable level of strong.Ecological safety has been in a very insecure state,its development model is at unsustainable state.The main factors resulting in ecological safety crisis are the excessive consumption of resources,and large population and urban sprawl leading to the decrease in arable land.