IMHE OpenIR  > 山地表生过程与生态调控重点实验室
Nutrient distribution and risk assessment in drainage ditches with different surrounding land uses
Wang, Tao1,2; Kumwimba, Mathieu1,2; Zhu, Bo1,2; Wang, Xiaoguo1,2; Tang, Jialiang1,2
Corresponding AuthorBo Zhu
2017
Source PublicationNUTRIENT CYCLING IN AGROECOSYSTEMS
ISSN1385-1314
EISSN1573-0867
Volume107Issue:3Pages:381-394
SubtypeArticle
Abstract

Due to lack of ditch maintenance, many ditches in the upper reaches of the Yangtze River are strongly affected by nutrient over-enrichment. Accordingly, we conducted surveys of nutrient concentrations in ditchwater and sediment in the hilly area of the central Sichuan Basin to investigate the spatiotemporal variations of nutrient concentrations and to promote the restoration of ditches for ecological functions. The results showed that the mean total nitrogen, particulate nitrogen, nitrate nitrogen, ammonia nitrogen, and total phosphorus values in ditchwater were 4.80, 1.09, 0.94, 1.09, and 0.18 mg/L, respectively. The mean concentrations of total nitrogen, nitrate nitrogen, ammonia nitrogen, and total phosphorus in ditch sediment were 1.58 g/kg, 2.62 mg/kg, 1.54 mg/kg, and 6.95 g/kg, respectively. Higher total nitrogen concentrations in ditchwater occurred in western areas, while higher total phosphorus concentrations occurred in central areas. Seasonally, we measured higher nitrogen and phosphorus concentrations in ditchwater close to agricultural areas during the rainy season, while the opposite effect was true for residential areas. Although nutrient concentrations in ditchwater could be affected by both surrounding land uses and ditch water levels, land use was critical. Moreover, nitrogen and phosphorus concentrations were significantly higher in the ditchwater near residential areas when compared to paddy or sloping cropland ditches. However, we found no significant differences between the nutrient contents of sediments in ditches surrounded by different land uses. Our results indicate that water pollution control initiatives in residential areas would be the most critical factor in combating ditchwater and sediment pollution in this region. Therefore, efforts to restore the ecological functions of drainage ditches should take into account rural township sewage management, fertilizer reduction, and especially ditch vegetation restoration.

KeywordDitch Management Pollution Assessment Nutrient Hilly Areas Enrichment
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
DOI10.1007/s10705-017-9840-3
WOS Subject ExtendedAgriculture
Indexed BySCI
WOS KeywordHYDROLOGICAL VARIABILITY ; WATER-QUALITY ; NITROGEN ; PHOSPHORUS ; FERTILIZER ; POLLUTION ; WETLAND ; MEXICO ; CHINA
Language英语
Quartile2区
TOP
WOS SubjectSoil Science
WOS IDWOS:000400234100007
Funding OrganizationNational Natural Science Foundation of China(41371462 ; Science and Technology Service Network Initiative of the Chinese Academy of Sciences(KFJ-SW-STS-175-02) ; "West Light'' Talent Plan ; open foundation of the Key Laboratory of Mountain Surface Processes and Ecological Regulation, Chinese Academy of Sciences ; 41430750 ; 41371302)
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Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/18647
Collection山地表生过程与生态调控重点实验室
山地灾害与地表过程重点实验室
Affiliation1.Chinese Acad Sci, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu 610041, Peoples R China
2.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Recommended Citation
GB/T 7714
Wang, Tao,Kumwimba, Mathieu,Zhu, Bo,et al. Nutrient distribution and risk assessment in drainage ditches with different surrounding land uses[J]. NUTRIENT CYCLING IN AGROECOSYSTEMS,2017,107(3):381-394.
APA Wang, Tao,Kumwimba, Mathieu,Zhu, Bo,Wang, Xiaoguo,&Tang, Jialiang.(2017).Nutrient distribution and risk assessment in drainage ditches with different surrounding land uses.NUTRIENT CYCLING IN AGROECOSYSTEMS,107(3),381-394.
MLA Wang, Tao,et al."Nutrient distribution and risk assessment in drainage ditches with different surrounding land uses".NUTRIENT CYCLING IN AGROECOSYSTEMS 107.3(2017):381-394.
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