层次分析法在小流域规划中的应用

层次分析法,是现代最新的系统分析诊断方法,也是一种定量和定性相结合的分析方法。我们在进行北河小流域系统分析时,将众多的因素聚类组合,建立了层次分析模型。根据层次分析结果表明,九种主要因素对北河小流域环境恶化、水土流失严重和经济贫困的影响程度:土地利用状况 >土壤结构 >气候条件 >植被状况 >动物资源 >劳力资源 >文化教育 >地貌类型 >地质构造。因此,在制定综合治理规划时,应首先调整农林牧副业占地比例,改善土壤结构,提高土地生产力;其次是兴建水利设施,加快绿化步伐,增加大地植被。

Application of level analysis in the planning of comprehensive harness for small watershed

The level analysis is the modern and new method to analyse and dia- gnose a system,which is a combination of qualification with quantifi- cation.When analysing Beihe small watershed systematically we cluster and group all the factors and establish models of level analysis.The ana- lysing results show that the effecting extent of nine factors to environ- ment worsenning of the watershed,soil and water loss and poorness of economy could be lined as,condition of land utilizationsoil texture climatic conditionvegetation conditionanimal resourceresoure of labour powerculture and educationgeomorphorlogical typegeological tectonic.Thus,it is suggested,firstly,to adjust the proporiton of lands for farming,forestry,husbandry and sideline production,to improve soil structure and raise land productivity,meanwhile,to construct ins- tallations of water conservancy,to accelarate greening and to enlarge vegetation when drawing up harnessing plan.