文献类型：期刊文献

英文题名：Nitrogen removal capacity and influencing factors of inland wetland under human activities: Jiashan County, China

作者：Li, Niu[1] Zhang, Youzheng[2] Wu, Jinlong[1] Li, Junzhen[1] Gao, Jingwen[1] Jiang, Pengcheng[1] Ye, Xiaoqi[1] Wu, Ming[1]

第一作者：李妞

机构：[1] Wetland Ecosystem Research Station of Hangzhou Bay, Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Zhejiang, Hangzhou, China; [2] Key Laboratory of Engineering Oceanography, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou, China

年份：2024

卷号：3

期号：4

起止页码：438-446

外文期刊名：River

收录：EI(收录号：20244717412434);Scopus(收录号：2-s2.0-85209804020)

语种：英文

外文关键词：Denitrification - Nitrogen removal - Water resources

摘要：Inland wetlands play a vital role in mitigating non-point source nitrogen loads through denitrification and anammox processes. However, the impact of varying human activities within the same region on these nitrogen removal processes of inland wetlands remains unclear. This study investigated the differences in nitrogen removal rates of wetland sediments under various human activities in Jiashan County, China. 15N isotope tracing was used to determine denitrification and anammox rates. Denitrification was the primary nitrogen removal pathway, with an average contribution of 82.34%. Denitrification and anammox rates varied significantly under different human influences, with the highest rates in residential and agricultural areas. NH4+, chlorophyll a, NO3?, and pH were the main environmental factors. This study highlights the need for targeted wetland management and restoration strategies based on the type and intensity of human activities. Protecting and restoring these "natural purifiers" is crucial for improving regional water quality and maintaining the ecological functions of wetlands in rapidly urbanizing landscapes. ? 2024 The Author(s). River published by Wiley-VCH GmbH on behalf of China Institute of Water Resources and Hydropower Research (IWHR).