摘要
文章通过对滇中杞麓湖表层沉积物中有机质(OM)、总氮(TN)和总磷(TP)含量及粒度参数的分析,结合克里金插值法与端元模型,研究了杞麓湖表层沉积物营养盐和粒度参数的空间分布特征及其相关性,探讨了可能影响其营养盐空间分布的因素,并对污染程度进行了评价。研究结果表明,杞麓湖表层沉积物OM、TN、TP平均含量已处于较高水平,其空间分布特征受到流域内土地利用和湖泊水动力情况的影响,湖泊沉积物中OM主要以外源输入为主。同时,营养盐污染评价结果表明,OM污染程度相对较低,而TN、TP污染较为严重。此研究结果将为杞麓湖富营养化治理和生态保护提供一定的参考和依据。
Based on the analysis of organic matter(OM),total nitrogen(TN)and total phosphorus(TP)contents and grain size parameters in the surface sediments of Qilu Lake in central Yunnan,combined with Kriging interpolation method and end-member model,the spatial distribution characteristics and correlation of nutrients and grain size parameters in the surface sediments of Qilu Lake were studied,the factors that may affect the spatial distribution of nutrients were discussed,and the pollution degree was evaluated.The results showed that the average contents of OM,TN and TP in the surface sediments of Qilu Lake were at a high level,and their spatial distribution characteristics were affected by land use and hydrodynamic conditions,OM in lake sediments is mainly exogenous input.At the same time,the evaluation results of nutrient salt pollution showed that OM pollution was low,while the pollution of TN and TP were more serious.The results of this study will provide some reference and basis for eutrophication control and ecological protection of Qilu Lake.
作者
尹鹏飞
熊静
贾雨欣
尹继清
张文翔
YIN Pengfei;XIONG Jing;JIA Yuxin;YIN Jiqing;ZHANG Wenxiang(Yunnan Key Laboratory of Plateau Geographic Process and Environmental Change,Faculty of Geography,Yunnan Normal University,Kunming 650500,China)
出处
《环境科学与技术》
CAS
CSCD
北大核心
2023年第10期32-41,共10页
Environmental Science & Technology
基金
国家自然科学基金项目(42161017,41661044)
云南师范大学2023年度研究生科研创新基金(YJSJJ21-A10)
滇池流域地藏寺贝丘成因和古环境意义。
关键词
杞麓湖
表层沉积物
营养盐
端元模型
污染评价
Qilu Lake
surface sediments
nutrients
end-member model
pollution assessment
