排序方式: 共有35条查询结果,搜索用时 15 毫秒
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农村移民安置生态环境容量估算的双向探索 总被引:8,自引:1,他引:8
把经济、社会、环境作为一个协调发展的整体,深入探讨了农村移民安置环境承载容量的估算方法,采取线性加权构造评价函数的方法,并选用人均口粮,农业产值,水土保持状况以及森林面积,以便建立分别代表三个效益的目标函数,进行多目标规划,然后,根据双向探索的思路,在可行解中择优,进而在顺向和逆向寻优中不同整体效益的基础上,发展出协调优化、综合决策的安置容量估算方法,双向寻优的结果可互相验证,互相补充,弥补了单一 相似文献
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This paper presents a model that can aid planners in defining the total allowable pollutant discharge in the planning region,accounting for the dynamic and stochastic character of meteorological conditions.This is accomplished by integrating Monte Carlo simulation and using genetic algorithm to solve the model.The model is demonstrated by using a realistic air urban-scale SO2 control problem in the Yuxi City of China.To evaluate effectiveness of the model,results of the approach are shown to compare with those of the linear deterministic procedures. This paper also provides a valuable insight into how air quality targets should be made when the air pollutant will not threat the residents‘ health.Finally,a discussion of the areas for further research are briefly delineated. 相似文献
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不合理地片面强调钻井废水的回用,是造成废水处理质量不高的重要原因之一。现在根据钻井生产的特点,分析讨论了钻井废水回用率合理控制的必要性,同时提出分阶段控制回用率的方法。现场实践证明,在这个方法实施的基础上,再加上一些有效的辅助措施,能有效地提高钻井废水达标率并减轻其对环境的污染。 相似文献
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