[1]李淼,高海鹰,张奇,等.鄱阳湖乐安江流域非点源磷输移的时空变化[J].东南大学学报(自然科学版),2015,45(4):805-810.[doi:10.3969/j.issn.1001-0505.2015.04.033]
 Li Miao,Gao Haiying,Zhang Qi,et al.Spatial and temporal variations of non-point phosphorus leaching in Le’an River of Poyang Lake Basin[J].Journal of Southeast University (Natural Science Edition),2015,45(4):805-810.[doi:10.3969/j.issn.1001-0505.2015.04.033]
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鄱阳湖乐安江流域非点源磷输移的时空变化()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
45
期数:
2015年第4期
页码:
805-810
栏目:
环境科学与工程
出版日期:
2015-07-20

文章信息/Info

Title:
Spatial and temporal variations of non-point phosphorus leaching in Le’an River of Poyang Lake Basin
作者:
李淼13高海鹰1张奇234姜三元34
1东南大学土木工程学院, 南京 210096; 2江西师范大学鄱阳湖湿地与流域研究教育部重点实验室, 南昌 330022; 3中国科学院南京地理与湖泊研究所, 南京 210008; 4中国科学院流域地理学重点实验室, 南京 210008
Author(s):
Li Miao13 Gao Haiying1 Zhang Qi234 Jiang Sanyuan34
1School of Civil Engineering, Southeast University, Nanjing 210096, China
2Key Laboratory of Poyang Lake Wetland and Watershed Research of Ministry of Education, Jiangxi Normal University, Nanchang 330022, China
3Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China
4Key Laboratory of Watershed Geographic Sciences, Chinese Academy of Sciences, Nanjing 210008, China
关键词:
非点源磷输移 时空变化 影响因素 乐安江 鄱阳湖
Keywords:
non-point phosphorous leaching spatial and temporal variations influential factors Le’an River Poyang Lake
分类号:
X52
DOI:
10.3969/j.issn.1001-0505.2015.04.033
摘要:
在鄱阳湖乐安江子流域设立了17个水质采样点,通过实验室测量获得2010年10月—2011年8月河流水体总磷(TP)的浓度数据.数据分析结合模型模拟得出以下结论:监测期内,流域内河流水体TP浓度变化范围为0.024 2~0.358 4 mg/L,水质情况春季最好,秋冬季其次,夏季最差.夏季河流水体TP浓度总体上由上游至下游逐渐增加,其他季节空间上无明显变化规律.降雨径流是TP输出的主要驱动因素,河流水体TP浓度与降雨量变化趋势一致.汛期河流水体TP浓度与土地利用类型的统计模型显示,河流水体TP浓度与耕地和城乡用地面积占流域总面积的比例呈正相关关系,与林地和草地面积占流域总面积的比例呈负相关关系;其中,河流水体TP浓度对耕地、城乡用地及林地面积的变化更为敏感.
Abstract:
17 water quality monitoring sites were established along Le’an River, one of the tributaries of Poyang Lake Basin. Streamwater TP(total phosphorus)concentrations were analyzed in laboratory from October, 2010 to August, 2011. Based on data analysis combined with model simulation, the following results were obtained. During the entire monitoring period, streamwater TP concentrations were in the range of 0.024 2 to 0.358 4 mg/L. Water quality in spring was the best, followed with autumn and winter, and summer was the worst. In summer, streamwater TP concentrations increased gradually from upstream to downstream, while there were no obvious variation trends in other seasons. Rainfall-runoff was the main driver of TP emission. Streamwater TP concentrations followed similar trends as rainfall. The outcomes of the statistical model between streamwater TP concentrations and land use types during wet season showed that streamwater TP concentration was positively correlated with the proportions of arable land, urban and rural areas to the total area of the basin, while negatively correlated with the proportions of forest area and grassland. Meanwhile, streamwater TP concentration was more sensitive to the changes of arable land, urban and rural land as well as forest areas.

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备注/Memo

备注/Memo:
收稿日期: 2014-12-30.
作者简介: 李淼(1990—),女,硕士生;张奇(联系人),男,博士,教授,博士生导师, qzhang@niglas.ac.cn.
基金项目: 国家自然科学基金资助项目(41371062)、江西省重大生态安全问题监控协同创新中心资助项目(JXS-EW-00)、南京地理与湖泊研究所“一三五”战略发展资助项目(NIGLAS2012135001).
引用本文: 李淼,高海鹰,张奇,等.鄱阳湖乐安江流域非点源磷输移的时空变化[J].东南大学学报:自然科学版,2015,45(4):805-810. [doi:10.3969/j.issn.1001-0505.2015.04.033]
更新日期/Last Update: 2015-07-20