鄱阳湖生态经济区土地生态安全警情研究

土地生态安全研究是当前土地可持续利用研究的前沿课题。为了确保土地生态安全，就必须对土地生态安全系统预警进行研究。结合预警理论，从压力 状态 社会响应3方面构建了土地生态安全预警指标体系，运用物元模型对鄱阳湖生态经济区2001~ 2008年的土地生态安全的警情进行分析。结果显示：2001年鄱阳湖生态经济区土地生态安全警情为轻警状态；2002~ 2004年处于中警状态；2005~ 2006年下降为重警状态；2007~ 2008年土地生态安全警情状况有所好转，处于中警状态。通过研究表明，利用物元模型进行区域土地生态安全预警研究是可行的，具有计算简便、意义明确、评价精度高等优点，可为土地生态安全预警研究提供了另一种途径

LAND ECOLOGICAL SAFETY ALARM IN POYANG LAKE ECOECONOMIC ZONE BASED ON MATTER-ELEMENT MODEL

The land ecological safety research is a forefront topic of current land sustainable use research.In order to guarantee the land ecological safety,the pre warning of land ecological safety system should be studied.Combined with the theory of pre warning,the paper established the index system of land ecological safety pre warning from perspectives of pressure,state and respond,and carried out the study on the land ecological safety alarm in Poyang Lake Eco economic Zone from the year 2001 to 2008 by using the matter element model.The results showed that the land safety alarm state of Poyang Lake Eco economic Zone was light warning in 2001.From 2002 until 2004,the level decreased to medium warning,while the level from 2005 to 2006 degraded to heavy warning.From 2007 to 2008,the level returned to medium warning,which indicated a better safety status.The research indicated that matter element model bears the advantages of simple calculation, clear indication and higher accuracy, providing another tool for researching regional land ecological safety pre warning