| Beginning with the introduction of the Sustainable Development Theory , the paper probes into the forms and development processes of the ecological restoration theory, reviews the progresses and problems in regionally ecoloical restoration and construction in recent years. It evaluates the Wuzhong's environment and resources its spacial distribution ,the situation of ecomomic and social development and the effects on the regionally ecological restoration and construcion from the natural and human aspectl.On the basis of the metioned above, in the mass, the thesis amalyzes the ecological problems that Wuzhong has and the reasons that result then in , ecological construction acheivments and it's consumable affecs ;then in detail and using the way combined fix quatity with quality , analyzes the condition, degree, mechanism, processof ecological caustic of various regions and kinds of ecological systems in Wuzzhong, juging the feasibility of restore and reconstruction of them. The paper indicates, as a whole ,the degree of eological caustic of the region is relative severity, but the diffefences between the plain region and the mountains region are very obvious, and all of them can be retored and rconstructed, wich has been proved by theory and practices. According to the conclutions and combining them with the mature theory ecological fumction dividings and the condition of Wuzhong's mature and society , the study divides the region into seven ecological functional areas. On basis of the ecological construction strategic targets presented by the governments of the country and Ningxia,Wuzhong and the caustic condions of different ecological system in defferent areas, the author design the models of ecological restoration and reconstruction for the different ecological areas and how to use them.Fimally, the paper estimates roughly the investment on the ecologic construction in recent term and evaluates and predicts the basis benefit, economic benefit, social benefit, ecologic benefit. |
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