通过对小浪底水库从入库至出库不同水深水质进行监测，并以入库水质全年最差时段采集的水样为研究对象，模拟研究泥沙对氨氮的吸附与解吸能力，以及硝酸盐氮在小浪底水库水环境（表层水有氧水环境和深层水缺氧水环境）下转化为氨氮的情况。小浪底水库水质监测及模拟研究结果表明：春季小浪底出库水氨氮含量显著增加不是小浪底水库底泥释放氨氮所致，也不是硝酸盐氮在小浪底水库水环境转化所致，而是水库上游输入引起的。%The Xiaolangdi Reservoir inflow and outflow water quality was monitored in different depths. The worst water sample was collected as research object in the whole year. The sediment adsorption and desorption capacity to ammonia nitrogen was simulated. The process of ni-trate nitrogen transforming to ammonia nitrogen was simulated in the Xiaolangdi Reservoir water environment,where surface water was aerobic and deep water was anoxia. The monitoring and simulation results show that the reason of significant change in the content of ammonia nitro-gen outflow from the Xiaolangdi Reservoir in spring is the upstream input,neither the sediment release nor nitrate nitrogen transformation.
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