摘要
硝酸盐氮同位素(δ^(15)N-NO_(3)^(-))是研究河流氮素的来源、迁移转化过程及污染治理的重要指标,也是评估农业施肥、污水排放及生态修复效果的关键依据,对揭示水体富营养化趋势及氮循环机制具有重要作用。渭河流域地形地貌丰富多样,长期的水土流失塑造了沟壑纵横、梁峁密布的独特地貌。此外,渭河流域也是重要的粮食产区和工业区,其硝酸盐氮素循环过程受人类活动和自然条件的共同影响。本研究数据集包含渭河、泾河、灞河以及黑河等7条河流的硝酸盐氮同位素数据。数据集所包含的数据可分为两部分,一部分是本实验所测定的硝酸盐氮同位素数据,这部分数据在测定过程中,严格遵照相关分析技术方法;另外一部分则是引自该流域已发表研究成果中的硝酸盐氮同位素数据,在收集整理过程中,均以文章所展现的数据为准,从而确保数据集中所有数据的准确性。本数据集可为渭河流域氮污染的溯源和迁移转化提供数据支撑,为区域内农业、工业、生活等氮元素面源污染调控及流域生态管理提供科学依据。
Nitrate nitrogen isotope(δ^(15)N-NO_(3)^(-))is an important indicator for studying the source,migration and transformation processes of nitrogen in rivers and for guiding pollution control.It is also a key basis for evaluating agricultural fertilization,sewage discharge and ecological restoration effects,and plays an important role in revealing the trend of water eutrophication and the nitrogen cycle mechanism.The topography and landforms of the Weihe River Basin are rich and diverse.Long-term soil erosion has shaped a unique landform with crisscrossing gullies and dense ridges and mounds.In addition,the Weihe River Basin is also an important grain-producing and industrial area,and its nitrate-nitrogen cycling process is jointly influenced by human activities and natural conditions.The dataset of this study contains the nitrate nitrogen isotope data of 7 rivers including the Weihe River,Jinghe River,Bahe River and Heihe River.The data in the dataset can be divided into two parts.One part is the nitrate nitrogen isotope data measured in this experiment,which were obtained strictly in accordance with relevant analytical techniques and methods during the measurement process.The other part is the nitrate nitrogen isotope data cited from the published research results of this basin.During the collection and organization process,all data were extracted exactly as presented in the published studies to ensure the accuracy of all data in the dataset.This dataset can provide data support for the source tracing and migration transformation of nitrogen pollution in the Weihe River Basin,and offer a scientific basis for the regulation of nitrogen non-point source pollution from agriculture,industry,and daily life within the region,as well as for the ecological management of the basin.
作者
冯苗苗
任豪钰
姚少杰
李宇亮
刘卫国
胡婧
黎焦焦
邢萌
潘梦言
FENG Miaomiao;REN Haoyu;YAO Shaojie;LI Yuliang;LIU Weiguo;HU Jing;LI Jiaojiao;XING Meng;PAN Mengyan(Key Laboratory of Subsurface Hydrology and Ecological Effects in Arid Region and Key Laboratory of Eco-hydrology and Water Security in Arid and Semi-arid Regions of Ministry of Water Resources,School of Water and Environment,Chang'an University,Xi'an 710064,P.R.China;State Key Laboratory of Loess Science,Institute of Earth Environment,Chinese Academy of Sciences,Xi'an 710061,P.R.China;Guangdong Yikangsheng Environmental Protection Technology Co.,Ltd,Yunfu 527499,P.R.China)
基金
国家自然科学基金(42207300、42377261)
黄土科学重点实验室培育项目(SKLLQGPY2412)。
关键词
渭河流域
硝酸盐氮同位素
细菌反硝化法
离子交换法
Weihe River Basin
Nitrate Nitrogen Isotopes
Bacterial Denitrification Method
Ion Exchange Method
