【摘要】 采用根际土壤溶液采样器（Ｒｈｉｚｏｎ－ＳＭＳ）和自制的培养容器对厌氧条件下西湖底泥ＮＨ４＋－Ｎ的释放进行了室内模拟研究。结果表明：在厌氧条件下，ＮＨ４＋－Ｎ的累计通量与时间关系曲线呈现３个阶段，根据通量一时间曲线中两个线性阶段计算的厌氧条件下ＮＨ４＋－Ｎ的释放速率分别为 １１．６０和 ５．１２ｍｇ ｍ－２ｄ－１。实验表明：Ｒｈｉｚｏｎ－ＳＭＳ具有使用方便、采样时空分辨率高等特点，可能成为间隙水地球化学研究的一种有力工具。更多还原

【Abstract】 Laboratory study on NH4+ -N release from the sediments of the West Lake in Hangzhou was conducted under anaerobic conditions using Rhizon-SMS (Rhizon Soil MoistUre Sampler) and homemade incubator. Three phases were observed in the cumulative NH4+ -N flux versus time curve and NH4+ -N release rates calculated from two linear parts of flux-time curve were 11.60 and 5.12 mg m-2d-1, respectively. Rhizon-SMS was found to be easy to operate and characterized by high spatial and temporal resolution. Therefore, it has the potential of serving as a powerful tool in pore water geochemistry studies.更多还原