【摘要】 西北地区是我国典型的生态脆弱区,也是未来重要的经济发展区域。该区干旱少雨,水资源缺乏,少量的湖泊湿地是该区重要的生态系统和城市景观。针对西北典型城区湖泊湿地水环境承载力与城市发展关系问题,以宁夏回族自治区三个不同发展程度的城市湖泊湿地为研究区域,基于DPSIR模型,结合实验室水质测定结果,构建湖泊湿地水环境承载力评价指标体系,运用熵权法和水环境承载力综合指数法对三市城区湖泊湿地水环境承载力开展研究。研究结果显示:银川市的湖泊湿地水环境承载力大于中卫市,为基本可承载水平;石嘴山市承载力水平均小于两市,属弱可承载水平。限制石嘴山市水环境承载力的主要影响因素为湖泊湿地水质状况和环境治理水平,因此在未来的转型发展中,石嘴山市可从改善湖泊水质,提高城市植被覆盖度、提高工业废水处理能力等方面着手改善城市环境,提高城市湖泊湿地水环境承载能力。更多还原

【Abstract】 The Northwest region is a typical ecologically vulnerable area in China. It’s also an important region of economic development in the future. It is dry and less rainy,so a small number of lake wetlands are very important urban ecosystem and landscap. Aiming at the relationship between carrying capacity and development of typical urban areas in northwest China,this paper selects three lake wetlands in different degrees of economic development cities in Ningxia,based on DPSIR model,combining the results of water quality determination in lab,constitutes an evaluation indexes system of the water environmental carrying capacity,and adopts entropy weight and comprehensive index method for carrying capacity of water environment. The results show that the carrying capacity of Yin Chuan is more than that of Zhongwei City,both of which are barely bearable; the carrying capacity of Shi Zuishan is weak,which is lower than those two cities. The key limiting factors are water quality and level of environmental governance. So in the future transformation and development,the government can improve water quality of lake wetland,increase vegetation coverage,improve wastewater treatment and some other aspects to improve the quality of the urban environment and water environmental carrying capacity of urban lakes and wetlands.更多还原