| 北运河下游不同土地利用非点源污染负荷估算 |
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| 引用本文： | 耿润哲,王晓燕,吴在兴,欧春霞.北运河下游不同土地利用非点源污染负荷估算[J].农业环境保护,2012(7):1412-1420. |
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| 作者姓名： | 耿润哲 王晓燕 吴在兴 欧春霞 |
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| 作者单位： | [1]首都师范大学资源环境与旅游学院,北京100048 [2]北京市密云县水土保持工作站,北京101500 |
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| 基金项目： | 国家重大水专项（2008ZX07209,2009ZX07212-002）;国家自然科学基金项目（40971258） |
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| 摘 要： | 选取我国北方地区以圩区为主要形式的北运河下游农业灌溉区——天津武清区和北辰区作为研究对象,针对不同土地利用类型进行降雨径流污染物浓度监测,采用美国土壤通用流失方程（USLE）、降雨径流模型（SCS-CN）、综合径流系数法等,结合GIS技术,分别估算了透水地面和不透水地面的氮磷负荷量。结果表明,非点源污染总氮、总磷的年负荷量分别为2865.04t.a-1和101.22t.a-1,不透水地面所产生的TN、TP负荷量分别占研究区污染负荷总量的81%和67%,透水地面所产生的TN、TP负荷量分别占研究区污染负荷总量的19%和33%（且污染物形态以溶解态为主,分别达到了81%和74%）。对于不同土地利用类型,总氮流失主要来源于村庄（贡献率为49%）、城镇（贡献率为17%）和耕地（贡献率为16%）,而总磷主要来源于村庄（贡献率为31%）、耕地（贡献率为23%）和城镇（贡献率为19%）。从产污强度来看,城镇用地是最高的,是其他土地利用类型的10倍以上。
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| 关 键 词： | 非点源污染 负荷估算 北运河下游灌溉区 透水地面 不透水地面 |
Non-point Source Pollution Loads from the Different Land Use Types in the Downstream Areas of the Beiyunhe River Basin, China |
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| GENG Run-zhe,WANG Xiao-yan,WU Zai-xing,OU Chun-xia.Non-point Source Pollution Loads from the Different Land Use Types in the Downstream Areas of the Beiyunhe River Basin, China[J].Agro-Environmental Protection,2012(7):1412-1420. |
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| Authors: | GENG Run-zhe WANG Xiao-yan WU Zai-xing OU Chun-xia |
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| Institution: | 1.College of Resource Environment and Tourism, Capital Normal University, Beijing 100048, China; 2.Soil Water Conservation Station of Miyun Reservoir, Beijing 101500, China) |
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| Abstract: | Wuqing and Beichen district, which are the agricultural irrigation plain in the downstream watershed of Beiyunhe River, were se- lected as research areas. The land use types were divided into pervious（ such as farmland ） type and impervious （such as urban areas and vil- lages ） type. The concentrations of pollutants in runoff from different land uses were monitored. Based on the platform of GIS, the estimation of the loads of non-point source pollution（NPS） were obtained by using universal soil loss equation of the United States（USLE ）, curve number method（SCS-CN） and an integrated runoff coefficient method. The resuhs indicated that the NPS loads of TN and TP of the watershed were 2865.04 t. a^-1 and 101.22 t.a^-1, respectively. In the impervious area, the loads of TN and TP accounted for 81% and 67% of the total. In the pervious area, the pollutant load of TN and TP accounted for 19% and 33% of the total（The dissolve N and dissolve P were the dominant loss forms, accounting for 81% and 74% of total loads from pervious landuse types, respectively）. In terms of different land use type, for TN, the main pollution sources were village, urban areas and croplands, accounting for 49%, 17% and 16% of total load, respectively. For TP, the main pollution sources were village, croplands and urban areas, accounting for 31%, 23% and 19% of total load, respectively. The pollution intensity of urban areas was 10 times higher than that of other land use types. |
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| Keywords: | non-point source pollution estimation of pollution load downstream irrigation area of the Beiyunhe River basin pervious area impervious area |
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