Nitrogen export from an agriculture watershed in the Taihu Lake area, China
文献类型：期刊论文
| 作者 | Gao, C; Zhu, JG; Zhu, JY; Gao, X; Dou, YJ; Hosen, Y |
| 刊名 | ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
 |
| 出版日期 | 2004-06-01 |
| 卷号 | 26期号:2-3页码:199-207 |
| 关键词 | eutrophication nitrogen nonpoint source pollution quantification Taihu Lake watershed |
| ISSN号 | 0269-4042 |
| 通讯作者 | Gao, C(chgao@nju.edu.cn) |
| 英文摘要 | Temporal changes in nitrogen concentrations and stream discharge, as well as sediment and nitrogen losses from erosion plots with different land uses, were studied in an agricultural watershed in the Taihu Lake area in eastern China. The highest overland runoff loads and nitrogen losses were measured under the upland at a convergent footslope. Much higher runoff, sediment and nitrogen losses were observed under upland cropping and vegetable fields than that under chestnut orchard and bamboo forest. Sediment associated nitrogen losses accounted for 8-43.5% of total nitrogen export via overland runoff. N lost in dissolved inorganic nitrogen forms (NO3--N + NH4+-N) accounted for less than 50% of total water associated nitrogen export. Agricultural practices and weather-driven fluctuation in discharge were main reasons for the temporal variations in nutrient losses via stream discharge. Significant correlation between the total nitrogen concentration and stream discharge load was observed. Simple regression models could give satisfactory results for prediction of the total nitrogen concentrations in stream water and can be used for better quantifying nitrogen losses from arable land. Nitrogen losses from the studied watershed via stream discharge during rice season in the year 2002 were estimated to be 10.5 kg N/ha using these simple models. |
| 收录类别 | SCI |
| WOS关键词 | TILLAGE ; PHOSPHORUS ; RUNOFF ; CATCHMENTS ; PATTERNS ; STREAMS ; SOILS ; FLOW |
| WOS研究方向 | Engineering ; Environmental Sciences & Ecology ; Public, Environmental & Occupational Health ; Water Resources |
| WOS类目 | Engineering, Environmental ; Environmental Sciences ; Public, Environmental & Occupational Health ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000223553200012 |
| 出版者 | KLUWER ACADEMIC PUBL |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2559327 |
| 专题 | 南京土壤研究所 |
| 通讯作者 | Gao, C |
| 作者单位 | 1.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Peoples R China 2.Nanjing Univ, Dept Geog, Nanjing 210093, Peoples R China 3.Japan Int Res Ctr Agr Sci, Tsukuba, Ibaraki 3058686, Japan |
| 推荐引用方式 GB/T 7714 | Gao, C,Zhu, JG,Zhu, JY,et al. Nitrogen export from an agriculture watershed in the Taihu Lake area, China[J]. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH,2004,26(2-3):199-207. |
| APA | Gao, C,Zhu, JG,Zhu, JY,Gao, X,Dou, YJ,&Hosen, Y.(2004).Nitrogen export from an agriculture watershed in the Taihu Lake area, China.ENVIRONMENTAL GEOCHEMISTRY AND HEALTH,26(2-3),199-207. |
| MLA | Gao, C,et al."Nitrogen export from an agriculture watershed in the Taihu Lake area, China".ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 26.2-3(2004):199-207. |
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来源：南京土壤研究所
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