其他题名Phosphorus Storage Capacity and Loss Risk in Coastal Reed Wetland Surrounding Bohai Sea
宋佳伟1,2; 徐刚1,3
; 张扬1,2; 吕迎春1发表期刊环境科学
ISSN0250-3301
2020
卷号41期号:2页码:728-733
关键词环渤海湿地表层沉积物磷吸附容量磷吸附饱和度释放风险指数
研究领域Environmental Sciences & Ecology
英文摘要Coastal wetland,at the intersection of land and sea,is considered as asink,source,andtransformerof phosphorus(P). Coastal wetland plays an important role in the global P cycle,and its ability to retain excessive P in water receives increasing attention. In this study,the coastal reed wetland sediments surrounding the Bohai Sea were sampled to investigate P adsorption capacity and loss risk by conducting batch experiments. Results show that the maximum P adsorption capacity(Q_(max))was 693.7-2 117.2 mg·kg~(-1),with an average of 1 468.6 mg·kg~(-1). The Q_(max) decreased in the order of Qilihai Wetland >Beidagang Wetland >Nandagang Wetland >Liaohe Delta Wetland >Shouguang Coastal Wetland >Yellow River Delta Wetland. The P adsorption capacity was related to the contents of Ca,Mg,and TOC. The degree of P adsorption saturation(DPS)and loss risk index(ERI)of the coastal wetland were 0.28%-4.50% and 0.53%-10.10%,respectively. The ERI suggested that the P loss risk was relatively low for coastal reed wetland surrounding the Bohai Sea except for the moderate loss risk for Shouguang coastal wetland. In summary,the reed coastal wetland around Bohai Sea demonstrated significantly P storage capacity and served as a P sink for water P. We recommend to fully utilize the coastal wetland to reduce point or non-point source pollution(e. g.,P)during the remediation or recovery of the polluted Bohai Sea.
中文摘要滨海湿地地处陆海交汇的关键带,是磷的汇、源和转化器,在全球磷循环过程中扮演着十分重要的角色,其对水体磷素的截留能力日益受到关注. 本文以环渤海地区芦苇湿地沉积物为研究对象,利用批处理实验研究了湿地磷的吸附容量和释放风险. 结果表明,湿地沉积物磷的最大吸附容量(Q_(max))为693.7 ~ 2 117.2 mg·kg~(-1),平均值为1 468.6 mg·kg~(-1),Q_(max)的大小顺序为七里海湿地>北大港湿地>南大港湿地>辽河三角洲湿地>寿光滨海湿地>黄河三角洲湿地. 环渤海湿地沉积物磷吸附主要受Ca、Mg和TOC含量的影响. 环渤海湿地磷吸附饱和度(DPS)和释放风险指数(ERI)分别为0.28% ~ 4.50%和0.53%~ 10.10%,结果表明除寿光滨海湿地磷释放风险为中度风险外,其它湿地磷释放风险较低. 总之,环渤海地区芦苇湿地沉积物具有较强磷吸附能力,沉积物为水体磷的汇,沉积物释磷风险较低. 建议在环渤海污染治理过程中充分发挥滨海湿地对磷的净化拦截作用,以降低陆源污染对近海水环境的影响.
文章类型Article
资助机构国家自然科学基金项目
收录类别CSCD
语种中文
CSCD记录号CSCD:6673459
引用统计
文献类型期刊论文
条目标识符http://ir.yic.ac.cnhttp://ir.yic.ac.cn/handle/133337/30382
专题中科院海岸带环境过程与生态修复重点实验室
中国科学院烟台海岸带研究所
作者单位1.中国科学院烟台海岸带研究所,烟台264003;
2.中国科学院大学,北京100049;
3.曲阜师范大学地理与旅游学院,日照276826
推荐引用方式
GB/T 7714宋佳伟,徐刚,张扬,等. 环渤海芦苇湿地磷的吸附容量及释放风险评估[J]. 环境科学,2020,41(2):728-733.
APA宋佳伟,徐刚,张扬,&吕迎春.(2020).环渤海芦苇湿地磷的吸附容量及释放风险评估.环境科学,41(2),728-733.
MLA宋佳伟,et al."环渤海芦苇湿地磷的吸附容量及释放风险评估".环境科学 41.2(2020):728-733.
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