水文距离在塑造沿流域-湖泊连续线沿着营养动力学的关键作用
Jiacong Huang1,2, George B Arhonditsis3, Yinjun Zhang4
1Key Laboratory of Lake and Watershed Science for Water Security, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing, China.
概括
中国的湖泊营养水平最好通过45公里内的流域特征来预测,而不是整个流域. 人类活动缩短了这一相关的水文距离,影响了水质管理.
科学领域:
- 环境科学 环境科学
- 临界技术 临界技术
- 生态生态学 生态生态学
背景情况:
- 农业和城市发展严重破坏淡水生态系统.
- 非点源污染是水质恶化的主要驱动因素.
- 需要实证模型来将流域属性和水文学与湖泊营养动力学联系起来.
研究的目的:
- 开发湖泊和的度预测模型.
- 研究不同水文距离的流域特征的影响.
- 为了确定湖泊管理中营养控制的关键空间领域.
主要方法:
- 编制了有关营养,气象和流域景观的国家数据集.
- 使用通用线性模型 (GLM) 进行预测.
- 分析了中国各地的104个湖泊和水库.
主要成果:
- 湖中的营养度可以通过流域特性来预测.
- 营养水平与45公里内的流域特征有很强的相关性.
- 广泛的人类活动减少了预测准确性和相关的水文距离.
结论:
- 水文距离的概念对于理解湖泊营养动态至关重要.
- 在45公里以内的近岸地区对于中国湖泊的营养管理至关重要.
- 这项研究为划定流域-湖泊连续性的管理区提供了一个新的框架.
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