基于PSR模型的商洛市土地生态安全评价

Ecological Safety Assessment of Land in Shangluo Based on PSR Model

以PSR模型为研究方法,从压力、状态、响应3个方面选取27个指标对商洛市2007~2011年的土地生态安全进行了综合评价。结果表明：商洛市土地生态安全综合指数由2007年的0.4033上升至2011年的0.8493,生态安全级别由“临界级”转变为“良好级”,土地生态安全状况明显改善。

This article conducted a comprehensive assessment of the ecological safety of the land in Shangluo during 2007 - 2011 by using PSR model as a research method and selecting 27 indexes from the aspects of pressure, status and response. It was found that the ecological safety comprehensive index of the land in Shangluo rose from 0.4033 in 2007 to 0.8493 in 2011, and the level of the land ecological safety converted from ＂critical level＂ to ＂good level＂, which indicated a significant improvement of the land ecological safety status.