不能将值 NULL 插入列 'id',表 'aje_website.dbo.t_web_site_access';列不允许有空值。INSERT 失败。 语句已终止。 欢迎访问《生态毒理学报》编辑部网站!

首页 | 期刊简介 | 编委会 | 投稿要求 | 化学品管理信息动态 | 学术会议 | 专辑 | 毒理学测试技术设备 | 订购本刊 | 联系我们 | English version

孙丽梅1,2,裘钱玲琳1,2,杨磊3,唐剑锋1,2,*,徐耀阳1,2. 长三角城郊樟溪流域水体氮磷分布特征及其影响因素[J]. 生态毒理学报, 2018, 13(4): 30-37
长三角城郊樟溪流域水体氮磷分布特征及其影响因素
Distribution of Nitrogen and Phosphorus and Its Influencing Factors in Zhangxi Watershed of a Peri-urban Area in the Yangtze River Delta
投稿时间:2018-05-02  修订日期:2018-07-04
DOI:10.7524/AJE.1673-5897.20180502001
中文关键词:  氮磷  时空分布  土地利用  影响因素  流域
英文关键词:nitrogen and phosphorus  spatial and temporal distribution  land-use  affecting factors  watershed
基金项目:国家自然科学基金(41571130063);中国科学院城市环境与健康重点实验室项目(KLUEH-C-201701)
作者单位
孙丽梅1,2,裘钱玲琳1,2,杨磊3,唐剑锋1,2,*,徐耀阳1,2 1. 中国科学院城市环境研究所城市环境与健康重点实验室厦门 361021 2. 中国科学院宁波城市环境观测研究站宁波 315830 3. 中国科学院生态环境研究中心城市与区域生态国家重点实验室北京 100085 
摘要点击次数: 204
全文下载次数: 172
中文摘要:
      快速城镇化和人类活动导致城郊流域水体营养盐污染和富营养化问题加重,识别氮、磷污染对流域水质的管控具有重要的意义。本研究选取长三角典型城郊地区宁波樟溪流域,在流域内根据土地利用类型、地形特征等布设样点,于2016年连续4个季度进行水样采集,研究樟溪流域河流水体氮、磷的含量及形态,及氮、磷在该流域的时空分布特征,并对其来源和影响因素进行分析。研究结果表明,流域内氮、磷分布具有较大的空间差异性,其中NH4+-N(n.d.~1.375 mg L-1)、TN-N(0.570~11.363 mg L-1)、DIP(n.d.~0.169 mg L-1)、TP(0.010~1.908 mg L-1)。在子流域空间分布上,人类活动频度越高的区域氮、磷的浓度越高,各采样点水体不同形态氮含量和磷含量具有明显的季节变化规律:春季和秋季的含量要高于夏季和冬季。本研究选取采样点距城镇距离、距源头距离以及土地利用类型所占采样点缓冲区的比例来表征人类活动的影响,结果表明,TN和TP含量与距城镇距离呈显著负相关关系,表明城镇化水平对流域氮、磷污染的重要影响。另外,典型城郊流域河流水体氮、磷污染主要受土地利用类型的影响,其含量与农业和城镇用地呈显著正相关关系(P < 0.01),其含量随人类活动频度的增加而升高。
  
AuthorAffiliation
Sun Limei1,2, Qiuqian Linglin1,2, Yang Lei3, Tang Jianfeng1,2,*, Xu Yaoyang1,21. Key Laboratory of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, China 2. Ningbo Urban Environment Observation and Research Station, Chinese Academy of Sciences, Ningbo 315830, China 3. State Key Laboratory of Urban and Regional Ecology,Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences,Beijing 100085,China
英文摘要:
      Rapid urbanization combined with intensified human activities lead to serious eutrophication due to extra nitrogen and phosphorus loss in peri-urban areas. Thus, identifying nitrogen and phosphorus distribution is significant for controlling and managing water quality in those areas. In this study, the spatial and temporal distribution of nitrogen and phosphorus as well as the influencing factors were determined for Zhangxi watershed which located at a typical peri-urban area of Ningbo in the Yangtze River Delta. Water samples for nitrogen and phosphorus were collected in four consecutive quarters in 2016 based on land use and topographic features. The results showed that the concentration of nitrogen and phosphorus varied at large ranges, NH4+-N (0.001-1.375 mg L-1), TN-N (0.570-11.363 mg L-1), DIP (0.008-0.169 mg L-1) and TP (0.010-1.908 mg L-1), across the watershed. Nitrogen and phosphorus also varied across different seasons. The concentrations are higher in spring and autumn than in summer and winter. Impact of human activities on water quality distribution were quantified with three indices, including distance to town, distance to source and land use. The results showed that the concentration of TN and TP was negatively correlated with the distance from town, indicating that urbanization level was important for nitrogen and phosphorus loss in the watershed. In addition, the concentration of nitrogen and phosphorus in peri-urban areas was positively correlated with agricultural and urban land-use (P <0.01). This indicated that the concentrations of nitrogen and phosphorus in watershed were also strongly influenced by human activities.
查看全文  查看/发表评论  下载PDF阅读器
关闭

您是第4735292位访问者   京ICP备 09058833 号

主办单位:中国科学院生态环境研究中心     单位地址:北京市海淀区双清路18号

 服务热线:010-62941072       传真:010-62923563       邮编:100085    Email: stdlxb@rcees.ac.cn

    本系统由北京勤云科技发展有限公司设计

0463美女美女3764美女美女ktv