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| 凤羽河小流域水质氮磷特征及影响因素分析 |
| Characteristics of Water Quality and Influence Factor Analysis in Fengyu River Watershed |
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| DOI： |
| 中文关键词: 水质氮磷特征 影响因素 农业面源 小流域 凤羽河 |
| 英文关键词: The water quality characteristics of nitrogen and phosphorus Influence factors Agricultural non point sources Small watershed Fengyu River |
| 基金项目:农业部公益性行业（农业）科研专项基金资助项目（201303089） |
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| 中文摘要: |
| 基于2013年凤羽河流域水质氮磷监测数据，解析流域水质氮磷特征，并分析影响其变化因素。结果表明：凤羽河水质氮磷质量浓度较高出现在3个时段，2月份，TN 0.95 mg/L～2.47 mg/L，以NO-3-N（55.6%）和DON（32.0%）为主，人类活动是影响的主要因素；5—6月，TN 0.77 mg/L～2.47 mg/L，以NO-3-N（64.3%）为主，TP 0.08 mg/L～0.70 mg/L，以PP(56.4%)和DTP（43.6%）为主，水稻种植和初期降雨是影响的主要因素；7—9月，TN 0.76 mg/L～3.73 mg/L，以NO-3-N（47.4%）和PN（35.4%）为主，TP 0.07 mg/L～0.97 mg/L，以PP（74.6%）为主，日降雨量是影响的主要因素。治理凤羽河流域农业面源污染应分时段、分区域调控。 |
| 英文摘要: |
| The characteristics of water quality and influence factor analysis in Fengyu River watershed were studied by the continuous positioning monitoring section data. The results showed that high concentration of total nitrogen and total phosphorus could consist of three stages. In February, total nitrogen concentration ranged 0.95 mg/L～2.47 mg/L, nitrate nitrogen（55.6%）and dissolved organic nitrogen（32.0%）were the major fraction of total nitrogen. Human activities were the main causes of water pollution. From May to June, total nitrogen concentration ranged 0.77 mg/L～2.47 mg/L and nitrate nitrogen accounted for 64.3%. Total phosphorus concentration ranged 0.08 mg/L～0.70 mg/L， particulate phosphorus（56.4%）and total dissolved phosphorus（43.6%）were the major fraction of total phosphorus. The initial stage 〖JP2〗of rainfall and rice cultivation were the main causes of water pollution. From July to September, total nitrogen concentration ranged 〖JP〗0.76 mg/L～3.73 mg/L, nitrate nitrogen（47.4%）〖JP1〗and particulate nitrogen（35.4%）were the 〖JP+1〗major frac tion of total nitrogen. Total phosphorus concentration〖JP〗〖FL）〗 ranged 0.07 mg/L～0.97 mg/L, particulate phosphorus accounted for 74.6%. The daily rainfalls had main effect on water pollution. Based on this research, regulation of prevention and control could effectively decrease non point source pollution. |
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