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- Title
Spatial Distribution and Evaluation of Nutrients and Grain Size in Surface Sediments of Qilu Lake.
- Authors
YIN Pengfei; XIONG Jing; JIA Yuxin; YIN Jiqing; ZHANG Wenxiang
- Abstract
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.
- Subjects
YUNNAN Sheng (China); GRAIN size; EUTROPHICATION control; ORGANIC bases; LAND use; ORGANIC compounds; LAKE sediments
- Publication
Environmental Science & Technology (10036504), 2023, Vol 46, Issue 10, p32
- ISSN
1003-6504
- Publication type
Article
- DOI
10.19672/j.cnki.1003-6504.0577.23.338