基于多目标决策灰色关联投影法的不同退耕还林模式生态效益评价  

Evaluation of Ecological Benefits for Different Models of Returning Farmland to Forests Based on Multi-criteria Decision Grey Relation Projection Method

作　　者：钟晓娟[1] 孙保平[1] 赵岩[1] 王多尧[1] 周湘山[1] 王引乾[1] 冯磊[1] 邱一丹[1] 

机构地区：[1]北京林业大学水土保持学院,北京100083

出　　处：《湖南农业科学》2011年第5期148-151,共4页Hunan Agricultural Sciences

基　　金：国家林业局林业公益性行业科研专项经费项目(201004018)

摘　　要：科学地评价不同退耕还林模式的生态效益对退耕还林工程的进一步实施具有重要意义。以会泽县退耕还林工程生态定位监测站数据为基础,运用多目标决策灰色关联投影法,通过对不同退耕还林模式生态效益的比较,测算出生态效益最显著的退耕还林模式。研究结果表明,退耕还林模式中乔灌草地生态效益最佳,乔、灌地次之,未退耕地生态效益最差,结果与退耕还林工程预期相一致,这说明灰色关联投影法应用于退耕还林生态效益评价的科学性与可行性。Scientific evaluation of ecological benefits for different models of returning farmland to forests has important significant to further complete the project of returning farmland to forests.To obtain the best model of returning farmland to forests which had the greatest ecological benefits by using multi-criteria decision grey relation projection method and comparing the ecological benefits among different models of returning farmland to forests based on the data from ecological monitoring stations of Huize County.The results showed that among all of the models of returning farmland to forests,the model of tree-shrub-grass had the best ecological benefits,the model of tree-shrub had second-best ecological benefits,and the model of non-returning farmland to forests had the worst ecological benefits.Therefore,the results were in consistent with the anticipation of project of returning farmland to forests,and it proved that the grey relation projection method used for evaluating ecological benefits of returning farmland to forests was scientific and feasible.

关 键 词：退耕还林模式 多目标决策灰色关联投影法 生态效益 

分 类 号：S721[农业科学—林木遗传育种]