欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
目的近年来人为干扰不断加重,西北干旱区的荒漠化日益严重,人与自然之间严重失衡,人类活动对荒漠化影响的程度、进行荒漠化的防治以实现人类生存环境的可持续发展是必须思考的问题。方法针对人为干扰对生态系统的影响程度,运用层次分析法进行主观与客观相结合的赋权方式,建立荒漠区生态退化程度评价指标体系,运用MATLAB进行求解,最终建立基于层次分析法的模糊综合评价模型,评价过牧、轮牧和开垦3种不同人为活动对生态系统退化的影响程度。结果过牧、轮牧、开垦3种不同人为活动在低度、中度、高度退化上的隶属度分别为(0.4229,0.1827,0.4190)、(0.2763,0.3195,0.5059)、(0.4948,0.1957,0.2522)。结论荒漠区生态系统退化程度最严重的为开垦区,其次为过牧区,程度最轻的为轮牧区。
英文摘要：
Objective In recent years,the increasing human disturbance has caused the growingly seri-ous desertification of the northwest arid region and the serious imbalance between human and nature.The degree of human activities influencing desertification and how to control desertification so as to realize the sustainable development of human living environment are problems we have to consider.Method Accord-ing to the influence degree of human disturbance on ecological system,the AHP combined with subjective and obj ective weighting methods was used,and the evaluation index system of ecological degradation in desert area was established.MATLAB was used to find solution.And finally based on the evaluation,the fuzzy AHP comprehensive evaluation model was established to evaluate influence degrees of over grazing, grazing and reclamation on ecosystem degradation.Results Under over grazing,rotational grazing and reclamation,the degree of membership in low,medium and high degree degeneration were (0.4229,0. 1827,0.4190),(0.2763,0.3195,0.5059),(0.4948.0.1957,0.2522),respectively.Conclusion The results show that the most serious ecosystem degradation degree in desert region is the reclamation area,followed by a pasturing area,and the lightest is the grazing area.
同期刊论文项目
同项目期刊论文
期刊信息
位置：