社会经济发展和气候变化对长期营养动态的影响:在Poyang湖的一个案例研究
Xiaoyu Zhang1, Shuhui Zhang2, Le Fang2
1Advanced Interdisciplinary Institute of Environment and Ecology, Beijing Normal University, Zhuhai 519087, China; Guangdong Provincial Key Laboratory of Wastewater Information Analysis and Early Warning, Beijing Normal University, Zhuhai 519087, China.
The Science of the total environment
|December 5, 2024
概括
社会经济因素,而不是气候变化,推动了波阳湖的营养变化. 经济增长和城市化显著影响总 (TN) 和总 (TP) 水平,强调需要有针对性的管理策略.
科学领域:
- 环境科学 环境科学
- 生态生态学 生态生态学
- 水质管理水质管理
背景情况:
- 与社会经济发展相关的人类活动影响全球气候和湖泊水质.
- 了解社会经济和气候变化对湖泊营养动态的影响至关重要,但需要进一步调查.
研究的目的:
- 从1987年到2021年,分析Poyang湖的长期营养动态.
- 评估社会经济和气候因素对营养度 (TN和TP) 的影响.
- 为了有效管理,确定营养素变化的关键驱动因素和轨迹.
主要方法:
- 使用了Poyang湖的长期数据集 (1987-2021年).
- 使用过轨迹方法 (FTM) 来识别营养趋势.
- 结合结构方程建模 (SEM) 和通用添加模型 (GAM) 来分析因子影响.
主要成果:
- 社会经济因素,特别是国内生产总值 (GDP) 和城市化 (Ur),被确定为总 (TN) 和总 (TP) 长期变化的主要驱动因素.
- 国内生产总值显示了与TN和TP的反向U形关系,解释了TN变化的86%和TP变化的45.7%.
- P-肥料 (Pfer) 和污水处理率 (STR) 分别是TN和TP的关键驱动因素,STR显著影响TP水平,高达80%的值.
结论:
- 社会经济发展,而不是气候变化,主要决定了波扬湖的营养动态.
- 化肥和污水处理率是有效的流域营养管理的关键指标.
- 对水污染和碳减排的协调战略对于减轻气候变化对湖泊生态系统的影响至关重要.
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