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| 九里湖采煤沉陷湿地沉积物营养盐分布特征与影响评价 |
| Distribution Characteristics and Impact Assessment of Nutrients in Sediments from Jiuli Lake Coal Mining Subsidence Wetland |
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| DOI： |
| 中文关键词: 营养盐 分布特征 环境影响评价 沉积物 土壤 九里湖 |
| 英文关键词: Nutrients Distribution characteristic Environmental impact assessment Sediments Soils Jiuli Lake |
| 基金项目:国家重点研发计划“工矿废弃地污染治理绿色利用与生态产品协同开发技术”基金资助项目（2023YFC3804203） |
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| 中文摘要: |
| 采集徐州九里湖东、西湖12个点位的沉积物及土壤样品，测定总有机碳（TOC）、总氮（TN）和总磷（TP），结合相关性分析与沉积物污染指数法评估环境污染状况。结果表明：各指标在沉积物中的含量高于土壤，东湖高于西湖；各指标间呈正相关，氮磷以有机形态为主，沉积物TN与土壤TOC、TN同源性显著，C/N比值（1068）指示有机质主要源于水生生物活动。评估结果显示，东湖综合污染指数达轻度水平（FF=134 mg/kg），磷污染尤为突出，沉积物存在内源释放风险，须加强内源管理与生态监测。 |
| 英文摘要: |
| The contents of TOC， TN， and TP in sediment and soil samples from 12 sites in East Lake and West Lake of Jiuli Lake in Xuzhou were determined. The environmental pollution status was evaluated by correlation analysis and sediment pollution index method. The results demonstrated that the content of each indicator was higher in sediments than in soils， and higher in East Lake than in West Lake. There was a positive correlation between the indicators. Nitrogen and phosphorus were mainly in organic forms. TN in sediments had significant homology with TOC and TN in soils. The C/N ratio（1068） indicated that organic matter primarily originated from the activities of aquatic organisms. The assessment results showed that the comprehensive pollution index of East Lake reached a moderate level（FF=134 mg/kg）， with phosphorus pollution being particularly prominent. There was a risk of endogenous release from sediments， so internal source management and ecological monitoring must be strengthened. |
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