黄石市土地利用变化的生态安全评价

湖北省黄石市是典型的资源型城市，多年粗放开采，致使区域生态环境恶化．从系统论思想出发，运用生态学的理论，建立起黄石市土地资源生态安全评价的代表性指标体系，运用层次分析法确定其指标权重，利用1996年和2004年的土地利用相关数据，对该市进行土地生态安全评价．结果表明黄石的土地生态安全状况2004年较1996年稍有改善．主要影响因素是区域土地利用／覆被的空间格局及其变化．

Evaluation on ecological security of land use change of Huangshi

Huangshi is a typical resource-rich city,as the long time extensive mine mode,the ecological environment of Huangshi tend to worse. Based on the investigate of land resource eco-security in this region,The indicators system of land resource eco-security can be projected,This research uses the(AHP) method decide the weight of the indicators.And then the land eco-security value can be worked out by the indicators'weights and the data of 1996 and 2004.The result shows the states of eco-security of Huangshi became a little better.Using the land use change data and the land eco-security value,We can analyse the impact on land eco-security that caused by the land use change.The conclusion shows that land use change is the essential factor that impacts the land ecosecurity of Huangshi.