These significant changes in land-use occur within the whole basin over the study period and cause severe such environmental degradation problems as land degradation and vegetation degeneracy,water environmental change,etc.

通过以上研究可以看出,近17年来,黑河流域土地利用发生了深刻的变化,由此造成了整个流域的生态环境退化问题,主要表现在水环境的变化、土地荒漠化、土壤盐渍化以及植被退化等方面。

The study on lagoonal wetland’s formation, evolution, causes of wetland environmental degradation and their effect on eco-environment are very significant for lagoonal wetland resources protection.

研究潟湖湿地的发育过程，探讨环境退化原因，分析潟湖湿地退化下的生态环境效应，并提出可持续发展策略，对于保护和合理开发利用潟湖湿地资源具有重要意义。