江河源区区域环境质量影响因素分析

人类的生产、生活和经济活动以及区域自然气候变化的共同影响,导致江河源区的生态环境呈现出不断退化的趋势,其主要特征是草地退化、湿地萎缩、土地荒漠化和生物多样性遭受破坏。文章分析了全球气候变化、青藏高原生态环境变化、青藏公路和青藏铁路的修建和营运、鼠害、西宁及州县城镇的经济发展以及迅速发展的旅游业等对江河源区生态环境产生的巨大而深远的影响,最后阐述了对这些方面的集成研究将有助于揭示江河源区生态环境的演变趋势。

The analysis of influencing factors to eco-environmental quality in source regions of Yangtse River and Yellow River and Lantsang River

The source regions' eco-environment is being degenerated by human's social work,daily life,economic activities and natural climate changes.It is embodied in the pasture degeneration,wetland shrinkage,land desertification and bio-diversity threat.The other factors such as the global climate warming-up,Tibetan plateau eco-environment changes,Tibetan road and railway construction and using,rodent damage,and the economic development and tourism thriving of Xining and other cities cause tremendous and far-reaching influence on the regional eco-environment.The study results may help to discover the trend of eco-environmental change in the source regions.