应用Manure-DNDC模型模拟畜禽养殖氮素污染

畜禽养殖是重要的农业面源氮素污染源头,大量的畜禽粪便施入农田后,会加大农田氮素径流和淋溶损失强度。畜禽养殖废弃物氮素污染过程复杂,涉及到动物自身营养循环以及废弃物通过不同途径进入环境的过程,目前大多通过排放系数法估算畜禽养殖过程产生的氮素污染负荷。该文选用最新版Manure-DNDC模型,以山东小清河流域为例,模拟畜禽养殖及废弃物处理的生物地球化学过程,分析氮素在动物、畜禽粪便、农田之间的迁移转化,探讨该过程中氮素的主要损失途径以及污染物负荷的时空变化特征。模拟结果表明,小清河流域2008年畜禽养殖及粪便处理场所氮素径流损失4.66万t,粪便施入农田后的氮素径流和淋溶损失分别为0.1、0.51...

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Published in农业工程学报 Vol. 28; no. 9; pp. 183 - 189
Main Author 高懋芳 邱建军 李长生 王立刚 李虎 高春雨
Format Journal Article
LanguageChinese
Published 农业部面源污染控制重点实验室/中国农业科学院农业资源与农业区划研究所,北京,100081%美国新罕布什尔大学地球、海洋与空间研究所,Durham.NH03824 2012
Subjects
Manure-DNDC
农业面源污染
模型
氮
粪便
Manure-DNDC
粪便
农业面源污染
氮
模型
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ISSN1002-6819
DOI10.3969/j.issn.1002-6819.2012.09.031

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Summary:畜禽养殖是重要的农业面源氮素污染源头,大量的畜禽粪便施入农田后,会加大农田氮素径流和淋溶损失强度。畜禽养殖废弃物氮素污染过程复杂,涉及到动物自身营养循环以及废弃物通过不同途径进入环境的过程,目前大多通过排放系数法估算畜禽养殖过程产生的氮素污染负荷。该文选用最新版Manure-DNDC模型,以山东小清河流域为例,模拟畜禽养殖及废弃物处理的生物地球化学过程,分析氮素在动物、畜禽粪便、农田之间的迁移转化,探讨该过程中氮素的主要损失途径以及污染物负荷的时空变化特征。模拟结果表明,小清河流域2008年畜禽养殖及粪便处理场所氮素径流损失4.66万t,粪便施入农田后的氮素径流和淋溶损失分别为0.1、0.51万t。
Bibliography:11-2047/S
Livestock and poultry breeding is one of the most important sources for agricultural non-point source nitrogen pollution. After application of manure fertilizer, the intensity of nitrogen losses through soil erosion and leaching in arable land will increase dramatically. Livestock breeding and manure management is a complicate process including nutrient cycling in animal body and transportation of waste from manure to environment through different routes. Discharge coefficient method was widely used for the evaluation of nitrogen pollution loads from animal breeding. The newest Manure-DNDC model was used for the modelling of biogeochemistry process in animal breeding and manure management, with a case study of Xiaoqinghe watershed in Shandong province. Nitrogen transportation and transfer in animal body, manure and agricultural land, main ways of nitrogen losses as well as spatial and temporal distribution of pollution were analyzed in the paper. The results indicated that nitrogen loss in the proces
ISSN:1002-6819
DOI:10.3969/j.issn.1002-6819.2012.09.031