太湖河网地区农村非点源氮负荷——以宜兴市大浦镇为例

生态学杂志

太湖河网地区农村非点源氮负荷——以宜兴市大浦镇为例

王宁^1,2;郭红岩¹;王晓蓉¹;朱建国³;杨林章³

¹南京大学环境学院污染控制与资源化研究国家重点实验室, 南京 210093;²安徽大学生命科学学院, 合肥 230039; ³中国科学院南京土壤研究所土壤与农业可持续发展国家重点实验室, 南京 210008

收稿日期:2007-06-19 修回日期:1900-01-01 出版日期:2008-04-10 发布日期:2008-04-10

Nitrogen load from rural nonpoint source in river network region, Taihu Lake: A case study from Dapu Town in Yixing City.

WANG Ning^1,2;GUO Hong-yan¹;WANG Xiao-rong¹;ZHU Jian-guo³; YANG Lin-zhang³

¹State Key Laboratory of Pollution Control and Resource Reuse, School of
Environment, Nanjing University, Nanjing 210093, China;²School of Life Sc
ience, Anhui University, Hefei 210093, China;³State Key Laboratory of Soi
l and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sci
ences, Nanjing 210008, China

Received:2007-06-19 Revised:1900-01-01 Online:2008-04-10 Published:2008-04-10

摘要/Abstract

摘要： 采用野外试验与实地调查相结合，利用泥沙流失方程和GIS平台，定量估算了江苏宜兴市大浦镇农村非点源氮排放负荷。结果表明：大浦镇农村非点源氮排放负荷为207.0 t·a^-1，其中农田、生活污水、养殖、垃圾和非农田泥沙流失的排放负荷分别为80.6、61.1、49.3、10.5和5.4 t·a^-1，分别占39.0%、29.5%、23.8%、5.1%和2.6%；5种排放源中，农田、生活污水和养殖为优先控制因子；方钱、大浦、浦北和浦南4村平均氮排放负荷为80.4、73.0、60.4和52.3 kg·hm^-2·a^-1，远高于其他区域，为优先控制区。

关键词: 辽西, 人工林, 气候生产力

Abstract: With soil loss equation and GIS platform, the nitrogen load from rural non-point sources was estimated by a combination of field experiments and survey in Dapu Town, Yixin City, Jiangsu Province. Results showed that the nonpoint discharge of nitrogen from Dapu Town were about 207.0 t·a^-1, which was composed of 80.6 tons of farmland, 61.1 tons of living sewage, 49.3 tons of fishery, 10.5 tons of garbage and 5.4 tons of sediment production per year, which occupied 39.0%, 29.5%, 23.8%, 5.1% and 2.6%, respectively. The critical control factors of the five nitrogen sources were farmland, living sewage and fishery. The average nitrogen discharge from four villages, Fangqiang, Dapu, ubei and Punan, were 80.4, 73.0, 60.4 and 52.3 kg·hm^-2·a^-1, which were much higher than that from other villages. Therefore the four villages were critical control areas.

Key words: Western Liaoning area, Plantation, Climatic productivity

王宁;郭红岩;王晓蓉;朱建国;杨林章 . 太湖河网地区农村非点源氮负荷——以宜兴市大浦镇为例[J]. 生态学杂志.

WANG Ning^1,2;GUO Hong-yan¹;WANG Xiao-rong¹;ZHU Jian-guo³; YANG Lin-zhang³ . Nitrogen load from rural nonpoint source in river network region, Taihu Lake: A case study from Dapu Town in Yixing City.[J]. cje.

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