摘要
由于目前生态风险评价方法参数较少,不能考虑多个方面生态系统的变化状态,针对这一问题,本文提出了基于景观格局指数的生态风险定量评价方法。算法构建了评价指标体系,融合了多个方面的参数,利用层次分析法确定权重,计算指标体系内各项景观格局指数,最终确定生态风险指数。利用大连金普新区2013年以来的生态用地数据进行了生态风险评价,结果表明:研究期内,生态风险呈波动性发展;研究初期生态系统最稳定;金普新区挂牌成立的阶段,生态指数相对较低,生态系统受人类活动影响大。与传统的生态评价方法相比,该算法考虑了多方面的影响因素,避免了个别景观指数对结果产生影响。
Since the parameters of ecological risk assessment methods are few,the change of ecosystem in many aspects can not be considered.In view of this problem,a quantitative assessment method of ecological risk based on landscape pattern index is proposed in this paper.The algorithm constructs the evaluation index system and parameters in multiple aspects are fused.Using AHP to determine the weight and calculate the landscape pattern index in the index system.Finally,the ecological risk index was determined.Ecological risk assessment was carried out using the ecological land data of Dalian Jinpu new area since 2013,the results show that:during the study period,the ecological risk was fluctuating,the most stable time of ecosystem is in the early stage of study.At the stage of the establishment of the Jinpu new area,the ecological index is relatively lower,the ecosystem is greatly influenced by human activities.Compared with the traditional ecological evaluation methods,the algorithm considers more factors and avoids the impact of individual landscape index on the results.
作者
齐润冰
QI Runbing(Natural Resources Services Center of Liaoning Province,The Basic Surveying and Mapping Institute of Liaoning Province,Jinzhou 121003,China)
出处
《测绘通报》
CSCD
北大核心
2019年第S1期110-112,118,共4页
Bulletin of Surveying and Mapping
关键词
景观格局
生态风险
定量
landscape pattern
ecological risk
ration
