吴忠市受损生态系统恢复与重建模式研究

【作者】 吕汝健；

【导师】 刘康； 李团胜；

【作者基本信息】 西北大学 ， 自然地理学， 2003， 硕士

【摘要】 本文从可持续发展理论入手，探讨了生态恢复学理论的形成与发展，对近年来国内外有关区域生态恢复与重建的理论研究及实践进展和存在的问题进行评述，进而从自然和人文两个方面，就吴忠的环境与资源特点、空间分布、经济社会发展水平以及它们对生态恢复与重建的影响等进行了评价。 在此基础上，从宏观上分析了吴忠目前存在的主要生态问题和形成原因、生态建设成就与成果自耗因素，接着着重从微观上对吴忠各地的生态致损情况、各类生态系统的受损度、受损机理和过程、生态恢复与重建的可行性进行定量和定性分析判断，指出从整体上看该区域生态受损比较严重，但存在着明显的山川二元结构，其恢复与重建在理论和实践上均证明是可行的，并据此结合已成熟的区域生态功能区区划理论，以吴忠的自然、社会条件和其它有关区划结果等为依据，对吴忠整体进行了生态功能区区划，然后根据国家、宁夏与吴忠三级政府出台的各级别生态建设战略目标、任务，按照有关生态恢复学等有关理论，详细地对七大生态功能区中各受损生态系统的恢复与重建模式进行研究，提出了不同的生物与工程模式及实施办法、途径、措施。 最后，本文对吴忠各生态功能区实施生态建设从基础效益，经济效益、社会效益和生态效益四个方面进行评价与预测，结果表明，效果明显。更多还原

【Abstract】 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.更多还原