| 余慧娟,许士国,朱林.水库沉积物资源化利用基础研究——以碧流河水库大堡库区为例[J].农业环境科学学报,2018,37(9):1977-1985. |
| 水库沉积物资源化利用基础研究——以碧流河水库大堡库区为例 |
| Fundamental study on the utilization of sediment in reservoir: A case study of Dapu area in the Biliuhe reservoir |
| 投稿时间：2017-12-01 |
| DOI：10.11654/jaes.2017-1654 |
| 中文关键词: 碧流河水库 水库淤积 沉积物 土地利用 |
| 英文关键词: Biliuhe reservoir siltation sediment land use |
| 基金项目:国家自然科学基金重大研究计划项目（2016YFC0400903）；国家自然科学基金专项基金项目（51327004） |
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| 摘要点击次数: 2171 |
| 全文下载次数: 1882 |
| 中文摘要: |
| 为解决水库清淤后沉积物的处理问题，以碧流河水库为研究对象，通过分层沉积物样品采集及分析，从沉积物酸碱性和壤质类型适宜度、养分丰富度、重金属污染程度以及毒性评价等方面分析研究水库沉积物土地利用可行性。结果表明：碧流河水库大堡库区各层沉积物样品中66.7%以上pH值介于6.0~7.5之间，76.2%以上样品为壤土；各层沉积物有机质平均含量在27.13~35.77 g·kg-1之间，其中81.0%以上有机质含量高于流域种植土壤有机质含量最小值；各层重金属平均含量除Cd超标外，Cu、Pb和Zn含量均在限值以内，重金属评价结果显示整体重金属污染水平为严重。研究表明大堡沉积物可安全用于场馆、绿化、商业、公共市政用地等Ⅱ类土地利用类型，也可用于Ⅰ类直接暴露于人体的土壤，但在使用前需进行预处理。 |
| 英文摘要: |
| To solve the problems associated with dredging sediments, in the present study, fundamental analyses were conducted for sediments collected from the Biliuhe reservoir. The feasibility of land use of reservoir sediments was analyzed with respect to sediment acidity, soil type, nutrient richness and spatial distribution, and current state and toxicity of heavy metals. Over 66.7% of the samples in each sediment layer were in the pH range 6.0~7.5, and over 76.2% of the samples were loam. The average organic matter content in each sediment layer ranged from 27.13 to 35.77 g·kg-1, and the content of over 81.0% of the samples was higher than the minimum levels for this basin. Analysis of the spatial distributions of nutrients in each sediment layer revealed that samples with higher organic matter content were mainly distributed near the river channel and the national highway, while those with lower organic matter content were located futher from the right bank of the Biliuhe channel. With respect to heavy metals, the average content of copper, lead, and zinc was within the limit of the national standards, although that of cadmium was not. The results of the heavy metal evaluation revealed low levels of Fe, Mn, Cu, Pb and Zn pollution, and high levels of Cd pollution, amounting to an overall high level of heavy metal pollution. The results indicate that sediments in the Dapu area can be safely used for venues, greening, commercial land, public municipal land, and other class Ⅱ lands. It can be used for class Ⅰ land, which is directly exposed to humans, but pretreatment should be conducted to ensure safety. |
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