滇池流域土地利用变化及其对水质影响研究综述

    Research review on land use change in Dianchi Lake Basin and its impact on water quality

    • 摘要: 土地利用变化是影响地表水质的重要驱动因素,人类活动强烈的高原湖泊流域尤为突出。滇池流域是长江上游生态安全建设的重点区域之一,近几十年的快速城市化使水质急剧恶化,迫切需要对相关问题进行全面总结以实现区域可持续发展。通过关键词检索得到229篇滇池流域土地利用变化和水质研究的相关文献,系统分析研究内容与方法、土地利用变化特征及其水质效应,重点总结土地利用变化对水质的影响。结果表明:已有研究在土地利用分类体系、研究时间段、数据分辨率和水质参数选取等方面存在差异。但总体上,1974年以来滇池流域土地利用最明显的变化是建设用地持续增加和耕地持续减少,变化最敏感的地区是湖滨带。土地利用类型、强度和格局变化是导致水质下降的主要因素,对水质的影响具有非线性特征。未来应进一步加强滇池流域土地利用变化的水质影响机理研究,为优化流域土地利用和保护滇池水质提供重要支撑。

       

      Abstract: Land use change is an important driving factor of surface water quality, especially in the plateau lake basin where human activities are strong.Dianchi Lake Basin is one of the key areas for the construction of ecological safety in the upper reaches of the Changjiang River.However, rapid urbanization in recent decades has caused water quality deteriorate rapidly.It is urgent to comprehensively summarize the relevant issues in order to achieve regional sustainable development.229 papers on land use change and water quality in Dianchi Lake Basin were obtained by keywords research.Research content and methods, land use change characteristics and its water quality effects were systematic analyzed, and the impact of land use change on water quality was the focus.The results show that there are differences in the land use classification system, research time period, data resolution, and water quality parameters.In overall, the most significant changes are on construction land increasing and cultivated land decreasing since 1974.The most sensitive area for changes is the lakeside zone.Water quality has declined significantly, but the type, intensity, and pattern of land use changes have non-linear characteristics in their impact on water quality.In the future, it should further strengthen the mechanism research on land use change on water quality in Dianchi Lake Basin, and provide important support to optimize the land use of basin and protect the water quality of Dianchi Lake.

       

    /

    返回文章
    返回