黄河兰州城区段湿地现状及保护建议

调查了黄河兰州城区段湿地类型和分布,结果表明:黄河兰州城区段湿地总面积1729.68hm2。5000m2以上的河岸湿地共计47块,总面积517.17hm2,其中几乎无人为干扰的湿地105.99hm2,仅占河岸湿地面积的20.50%;人为破坏程度非常严重、湿地功能几乎完全丧失的近裸露湿地252.43hm2,占河岸湿地面积的48.81%。黄河兰州城区段湿地存在乱侵乱占、遭受污染、河岸湿地植被破坏和湿地功能日趋退化等问题,提出了湿地保护与恢复建议。

Current Status of Yellow River Wetlands in Lanzhou Urban Section

A field survey of Yellow River wetland in Lanzhou urban area was conducted. The results showed that,The total area of Yellow River wetlands 1729.68 ha in the urban section, there were 47 blocks of riparian wetlands larger than 5000 m2 with a total area of 517.17 ha. There were 105.99 ha wetland with almost no human interference, accounting for only 20.50% of the total area of riparian wetlands. There were 252.43 ha nearly bared wetland with severe human disturbance and complete loss of wetland ecological functions, accounting for 48.81% of the total area of riparian wetlands. Problems of unauthorized wetland occupation, severe pollution, destruction of riparian vegetation and increasing degradation of wetland ecological functions were identified. Proposals were made for protection and restoration of the wetlands.