沛沿河不同土地磷元素输移过程研究
Phosphorous Transferring Processes under Different Land in Pei Yan River
以沛沿河流域为研究对象，选择最具有代表性水稻田、林地和果地三种土地利用类型，在室内人工模拟降雨的条件下，研究暴雨径流过程中不同形态磷素迁移过程。研究结果表明：在暴雨强度条件下，三种土地利用类型的产流量大小顺序为水稻田>林地>果地。磷素流失量随土地利用类型不同表现出明显差异，地表径流水相磷流失量以水稻田地最高，其次为果地和林地。颗粒态磷占地表径流水相总磷的65%以上，是磷素流失的主要形态。三种土地利用类型累积磷流失量与累积径流量之间的关系可表示为：TP=aQb，两者呈现正相关性。
In this paper three typical land use pattern in Pei Yan river watershed were studied on nutrients loss under the simulated rainfall. Phosphorous losses in storm runoff were investigated. The results show that the amounts of runoff follow the order that paddy fields>forest land>orchard under the same rainfall condition. With the storm intensity, the loss of total phosphorous in surface runoff of paddy fields is the largest and that of forest land is the smallest. The main form of phosphorous loss in surface runoff is particulate phosphorous, and accounts for more than 65% of the whole. The relationship between cumulative losses of total phosphorous and runoff flux could be expressed by TP=aQb, which are positive related.
李苗
农业科学研究农田水利工程环境污染、环境污染防治
沛沿河流域模拟降雨土地利用磷素流失地表径流
Pei Yan river watershedsimulated rainfallland usephosphorous losssurface runoff
李苗.沛沿河不同土地磷元素输移过程研究[EB/OL].(2011-03-25)[2025-08-25].http://www.paper.edu.cn/releasepaper/content/201103-1035.点此复制
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