景观生态学原理与方法在荒漠化研究中应用的理论分析

荒漠化发生发展的过程实际上是指在自然和人为因素的作用下，生态系统结构遭受破坏、功能过程受阻和演变发生异化的过程，其防治的根本措施是恢复和重建健康的生态系统。所以，景观生态学理念在荒漠化的研究和防治中有着重要的意义。本文从荒漠化与生态系统结构、功能变化、荒漠化与生物多样性、荒漠化生态系统的物质循环和能量流动以及荒漠化生态系统的稳定性等方面论述了景观生态学理念在荒漠化研究中应用的可行性，并重点分析了景观生态学关于景观格局变化的评价指标与荒漠化土地动态变化之间的关系。

APPLICATION OF LANDSCAPE ECOLOGICAL PRINCIPLE AND METHOD IN DESERTIFICATION RESEARCH

Desertification is the process of ladn degradation in arid,semi-arid and sub-humid areas due to adverse climate and human activities.It is always accompanied with the processes of structure destruction,function degradation,and species loss of ecosystems.All the ecological principles engaged in the processes are also the basic principles of landscape ecology.Landscape ecology focuses on the characteristics of structrue,function,changes of landscape as well as landscape planning.Landscape ecology includes the following principles:structure and function,biodiversity,material cycling,nutrient redistribution,energy flow,landscape change and landscape stability.The process of desertification actually includes the processes of structure destruction,function degradation and the abnormalization of changes due to adverse natural factors and human activities,so that landscape ecological princciples play an important role in desertification research.The possibility of the application of landscape ecological principles in desertification research was discussed in this artiele mainly analysed the relationship between the evaluation index of landscape pattern change and the developing trends of desertification land.