...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Aquatic Sciences >Total phosphorus and climate are equally important predictors of water quality in lakes
【24h】

Total phosphorus and climate are equally important predictors of water quality in lakes

机译：总磷和气候是湖泊水质的同样重要的预测因子

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Water quality degradation is one of the largest threats to freshwater ecosystems. Nutrient inputs, land use changes, and climate are expected to be the most important drivers of water quality degradation. Here, we quantify the relative influence of nutrient inputs, climate, and lake geomorphometry on primary production in freshwater lakes globally, using chlorophyll a (chla) as a proxy. We used a large lake chlorophyll database that included chla and total phosphorus, in addition to lake geomorphometric variables (mean depth, watershed area, elevation, surface area, volume, residence time) and climate (air temperature, precipitation, cloud cover, solar radiation) for 2561 freshwater lakes around the globe. Our model was able to explain 60% of the variation in chla concentrations. Of that, total phosphorus (TP) explained 42%, a combination of climate variables explained 38%, and geomorphometrics explained 20% of the variation. Although there have been increased efforts and regulations in place for land use and farming, nutrient inputs continue to be the leading cause of primary production in lakes. However, the influence of climatic variables acting synergistically (temperature, precipitation, cloud cover and solar radiation) is nearly equal to that of total phosphorus, suggesting nutrient management efforts are not sufficient alone to mitigate water quality degradation. Our findings underscore the critical need to incorporate climate factors into water quality management given current climate change.
机译：水质退化是对淡水生态系统的最大威胁之一。营养投入，土地利用变化和气候预计将成为水质降解最重要的驱动因素。在这里，我们使用叶绿素A（CHLA）作为代理，量化营养投入，气候和湖地球形状对全球淡水湖泊初级生产的相对影响。我们使用了一个大湖叶绿素数据库，包括CHLA和总磷，除了湖地理位置变量（平均深度，流域区域，海拔，表面积，容积，覆盖时间）和气候（空气温度，降水，云覆盖，太阳辐射）在全球各地的2561次淡水湖泊。我们的模型能够解释CHLA浓度的60％的变化。其中，总磷（TP）解释了42％，气候变量的组合解释了38％，地球致杂模解释了20％的变化。虽然土地利用和农业的努力和法规已经增加，但营养投入仍然是湖泊初级生产的主要原因。然而，气候变量作用协同（温度，沉淀，云覆盖和太阳辐射）的影响几乎等于总磷的，表明营养管理努力单独避免水质降解。我们的研究结果强调了将气候因素纳入水质管理的危急需要，鉴于当前的气候变化。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号