此外针对三江源区湿地生态系统退化机制和存在的主要问题，提出了合理利用与保护对策。
In addition, Measures on reasonable utilization and conservation are put forward on the basis of degradation mechanism and problem of wetlands ecosystem in Sanjiangyuan region.
由于人类利用和改造湿地资源活动的日益加剧，湿地正在全世界范围内面临威胁，并已成为退化最为严重的生态系统。
With more and more activities of using and changing wetland by human, wetland is facing with worldwide threat and has become one of the most degraded ecosystems.
因此研究退化湿地土壤的理化性质，不仅有助于我们了解毛乌素沙区湿地退化的原因，还为进一步保护湿地生态系统提供了理论依据。
So, study the physical and chemical properties of degraded wetland soils help to investigate the cause of wetland degraded and provide theoretical basis for wetlands ecosystem protecting.
研究结果表明：（1）澳门海岸湿地生态系统处于退化状态；
The results obtained from our survey show that: 1. the coastal wetlands in Macau are degrading;
研究结果表明：（1）澳门海岸湿地生态系统处于退化状态；
The results obtained from our survey show that: 1. the coastal wetlands in Macau are degrading;
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