Ecological Security Assessment in County Area Based on P-S-R Model—— A Case Study of Ningwu County, Shanxi Province

• 作者: Feng Xufang Liu Jingmei Zhao Lijuan
• 来源期刊: 气象与环境研究：英文版
• 学科: 地球科学
• 关键词: 生态安全评价 PSR模型 山西省 生态环境问题 县域 生态安全指数 生态经济系统 生态安全意识
• 年，卷（期）: 2014,（8）
• 页码范围: 13-15
• 页数: 3页
• 分类号: X171.1

摘要

To further understand the status quo and change tendency of ecological security in county area,we took the example of Ningwu County,the headstream of Fenhe River,confronting serious eco-environment problem and considerable human impacts. Taking Ningwu as the study area and using variation coefficient method to determine the weights of the indices,we built ecological security pattern based on Pressure-State-Response( P-S-R) Model of Organization for Economic Cooperation and Development. The ecological security status was evaluated by calculating eco-security index( ESI) with socio-economic statistical data of Ningwu during 2001- 2010. The results showed that the situation of eco-security had been improved from heavy alarm to relative safety during 2001-2010. It reflected that the ecological economic system in Ningwu County tended to be relaxed constantly after experienced a sharp conflict between ecological environment and economic growth. The ecological safety awareness was growing,however,by force of the objective requirements of population growth and economic development,the situation of ecological security was still unstable.