水土保持学报2011，Vol.25Issue(6)：31-33,39,4.
崂山水库流域不同土地利用类型地表径流的氮磷流失特征
Losses Characters of Nitrogen and Phosphorus in Runoff with Different Land Use Pattern in Watershed of Laoshan Reservoir
摘要
Abstract
Phosphorous and nitrogen losses characteristic in the runoffs in watersheds of Laoshan reservoir were studied based on runoff observations on four types of non-point pollution generating areas, I. E. Forest land, orchard, cultivated land, and village. Synchronous monitoring of rainfall and water quality in the runoffs were performed during a rainy season in 2009. The results showed that the concentration of NH4+ - N and dissolved total phosphorus in runoffs was much larger from village than those from other types, and it reached to about 4. 51, 1. 337 mg/L, respectively. The concentration of NO3- - N in cultivated land runoffs was much higher than those of other types and it reached to 15. 52 mg/L. Using the model of soil conservation service (SCS) , runoffs loads and losses amounts of four areas were calculated. The results showed that the export load of NO3- - N was significantly higher than that of NH4+ - N and dissolved total phosphorus. NO3- - N runoffs load in cultivated land was much higher than that in other types, and the maximum value was reach up to 40. 61 kg/(hm2 ? A). The excessive use of chemical fertilizers in cultivated land was the main reason of high losses load of NO3- -N.关键词
非点源污染/土地利用类型/径流/氮磷流失Key words
non-point pollution/ land use pattern/ runoff/ nitrogen and phosphorus losses分类
农业科技引用本文复制引用
马东,杜志勇,吴娟,周震峰,史衍玺..崂山水库流域不同土地利用类型地表径流的氮磷流失特征[J].水土保持学报,2011,25(6):31-33,39,4.基金项目
青岛市科技发展计划项目(08-2-1-20-nsh) （08-2-1-20-nsh）
