检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
作 者:任朝斌[1] 王龙 张千千[2] REN Chao-bin;WANG Long;ZHANG Qian-qian(School of Civil Engineering,Nanyang Institute of Technology,Nanyang 473004,P.R.China;Institute of Hydrogeology and Environmental Geology,Chinese Academy of Geological Sciences,Shijiazhuang 050061,P.R.China)
机构地区:[1]南阳理工学院土木工程学院,河南南阳473004 [2]中国地质科学院水文地质环境地质研究所,河北石家庄050061
出 处:《水生态学杂志》2024年第4期1-8,共8页Journal of Hydroecology
基 金:河南省科技发展计划(242102321117);南阳理工学院博士科研启动基金(NGBJ-2023-35);国家自然科学基金(42377232)。
摘 要:氮作为生态系统中的关键生源要素,对于水环境质量和生态系统平衡至关重要。文章综述了同位素技术示踪水环境生源要素氮的来源及循环过程的研究进展。介绍了水环境中氮的主要来源(自然和人为)及时空变化特点,强调自然因素(如降雨)和人为活动(如污水和农业施肥)对水环境中氮分布的影响;详细阐述了同位素技术识别水环境中氮来源的发展历程(单同位素、双同位素和多同位素联合溯源阶段);讨论了同位素技术在辨别水环境中氮循环过程(硝化、反硝化、矿化和同化作用)中的应用;指出当前研究的不足,主要表现在同位素分馏效应、测试成本高、未实测污染源端元值、多种同位素耦合溯源机制不清晰,未来研究需提高同位素溯源技术并整合多类技术与数据,尤其与机器学习结合潜力大。Nitrogen is an essential biogenic element in ecosystems,and plays important role in maintaining the quality of aquatic environment and the balance of ecological system.However,nitrogen pollution in water environments has been becoming increasingly severe,posing a global environmental challenge.In this article,we reviewed the research advances on study of nitrogen source analysis and cycling processes in water environments.First,we summarized the main sources of nitrogen in the aquatic environments(including natural sources and anthropogenic sources),and discussed the spatiotemporal variation characteristics of nitrogen in water environments,emphasizing the impact of natural factors(such as rainfall)and human activities(like sewage discharge and agricultural fertilization)on the distribution of nitrogen.Then we elaborated the development of isotope technology in identifying the sources of nitrogen in the aquatic environment,which mainly went through three stages:the single isotope tracing phase,the dual isotope tracing phase,and the multi-isotope combined tracing phase.Next,we discussed the application of isotopic techniques in the analysis of nitrogen cycling processes in water environments,including nitrification,denitrification,mineralization,and assimilation.Finally,we analyzed the shortcomings of current research and put forward the future development trend,especially in the potential combination of isotopic techniques and machine learning.
分 类 号:X13[环境科学与工程—环境科学]
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:216.73.216.7