基于PSR模型的大港油田土地生态安全评价研究  

Evaluation of land ecological security in Dagang Oilfield area based on the PSR model

作　　者：马子惠 梁成华[1] 孟庆欢 王秀丽[1] 

机构地区：[1]沈阳农业大学土地与环境学院,辽宁沈阳110866 [2]天津市河东区环境保护监测站,天津300170

出　　处：《环境污染与防治》2015年第1期41-45,51,共6页Environmental Pollution & Control

摘　　要：结合大港油田特殊的自然、社会、经济状况,基于压力-状态-响应(PSR)模型,构建了大港油田土地生态安全评价指标体系,采用比较客观的熵权法计算指标权重。结果表明,2005—2011年大港油田的土地生态安全综合指数总体处于下降趋势,土地生态安全等级均为风险级。通过评价,有助于了解制约土地生态安全的因素,从而对该地区的土地生态安全提出可行的对策与建议。Combine with the natural,social and economical conditions of Dagang Oilfield,the paper constructs the index system of land ecological security based on the PSR model.The entropy method is employed as an objective method to calculate the weights of indexes.The results show that the class of land ecological security of Dagang Oilfield is gradual decline during the year 2005 to 2011.And the land ecological security grades are at the level of risk in all these years.The evaluation results can help researchers understand the limiting factors of land ecological security,then put forward feasible countermeasures and suggestions to improve the land ecological security in the future.

关 键 词：大港油田 土地生态安全 评价 

分 类 号：X826[环境科学与工程—环境工程]