Abstract:

Ecosystem degradation is one of the obstacles to the sustainable development of resources and environment. It brings out depleted resources, environmental degradation, and the loss of ecological basis for sustainable development. The status of degraded ecosystem restoration models and technology of ecological restoration are introduced in this article. According to the regional land-use pattern, using the principle of geographical features, four kinds of ecological restoration models and corresponding technology systems for semi-arid loess hilly region were integratedly assembled and discussed from the systematical angles to provide useful reference for the restoration of regional degraded ecosystem.

Key words: loess hilly region, degraded ecosystem, ecological restoration technology, ecological restoration model

摘要：

生态系统退化是阻碍资源环境可持续发展的障碍之一,它使资源日益枯竭,环境恶化,可持续发展失去生态基础。初步介绍了退化生态系统生态恢复模式与技术的研究现状,从系统的角度出发,针对半干旱黄土丘陵区退化生态系统的资源和环境,根据区域土地利用格局,运用功能分区的原理,初步集成组装了半干旱黄土丘陵区退化生态系统恢复模式的4种模式及相应的技术体系并对其进行探讨,为区域退化生态系统恢复提供借鉴。

关键词: 黄土丘陵区 退化生态系统 生态恢复技术 生态恢复模式