西藏拉萨市拉鲁湿地的生态特征与退化机理的探讨

Research on ecological characteristics and ecological degredation of Tibetan Lhalu wetland

西藏拉鲁湿地是世界上最大的城市湿地,该湿地对改善拉萨市的生态环境具有至关重要的作用.近年前湿地受到严重的破坏,人为干扰强烈,湿地面积大量减少,沙化严重,生产力降低,生物多样性减低.为此,西藏自治区于2000年在此建立了拉鲁湿地自然保护区.期间作者通过对水文、土壤、沙化、植被、动物等方面的野外调查、测量和实验研究,探讨湿地退化的机制,为该湿地的恢复提供科学依据.

Tibetan Lhalu Wetland is the biggest urban wetland in the world and it plays an important role in the improvement of Lhasa's ecological environment. But in recent years, it has been damaged seriously, and strongly disturbed by human behaviors. So the size of the wetland has been greatly decreased; more and more parts of the wetland are desertified. Therefore Tibetan Autonomous Region established Lhalu Wetland nature reserve in 2000. The authors investigated and measured the stale of hydrology, soil, sand, vegetation, animals and other aspects of Lhalu Wetland. We discuss the mechanism of the retrogression of Lhalu Wetland.