IMPROVING NITROGEN SAFETY IN CHINA: NITROGEN FLOWS, POLLUTION AND CONTROL

IF 3.6 4区农林科学 Q1 AGRONOMY

Frontiers of Agricultural Science and Engineering Pub Date : 2022-01-01 DOI:10.15302/j-fase-2022454

Ti Chaopu, Xiaoyuan Yan, Longlong Xia, Jingwen Huang

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引用次数: 0

Abstract

ABSTRACT The impacts of nitrogen on environmental quality, greenhouse gas balances, ecosystem and biodiversity in China are of great concern given the magnitude of demand for food and energy. Comprehensive summaries of historic N flows and their critical threats and sustainable management are urgently needed. This paper initially reviews the historical trends of N flows in China and identifies the critical threats of N loss. Subsequently, it describes some recent success stories of N management, and finally indicates barriers to N pollution control. This review highlights three key points. Firstly, a steady increase of N input in China has led to a series of environmental problems via leaching and runoff, ammonia emissions and denitrification. Secondly, although great efforts to improve N management and N safety in China, further quantifications of N flows and analysis of their underlying mechanisms are needed to improve the understanding of the N cycle and pollution control. Finally, it proposes that the best available technologies combined with regulatory plans, laws, projects and policies should be implemented to overcome current barriers in N control and achieve a balance between the sustainable use of N resources and environmental conservation in China.

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提高中国氮安全:氮的流动、污染和控制

鉴于中国对粮食和能源的巨大需求，氮对环境质量、温室气体平衡、生态系统和生物多样性的影响备受关注。迫切需要全面总结历史氮流及其严重威胁和可持续管理。本文首先回顾了中国氮素流动的历史趋势，并指出了氮素流失的主要威胁。随后，介绍了近期氮管理的一些成功案例，最后指出了氮污染控制的障碍。这篇综述强调了三个关键点。首先，中国氮输入的持续增加导致了淋失径流、氨排放和反硝化等一系列环境问题。其次，尽管中国在改善氮素管理和氮素安全方面做出了巨大努力，但需要进一步量化氮流并分析其潜在机制，以提高对氮循环和污染控制的认识。最后，提出应结合规划、法律、项目和政策等措施，采取最佳可行技术，克服当前氮素控制的障碍，实现中国氮素资源可持续利用与环境保护的平衡。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Frontiers of Agricultural Science and Engineering AGRONOMY-

CiteScore

5.10

自引率

2.70%

发文量

期刊介绍： Frontiers of Agricultural Science and Engineering (FASE) is an international journal for research on agricultural science and engineering. The journal’s aim is to report advanced and innovative scientific proceedings in agricultural field including Crop Science, Agricultural Biotechnology, Horticulture, Plant Protection, Agricultural Engineering, Forestry Engineering, Agricultural Resources, Animal Husbandry and Veterinary Medicine, Applied Ecology, Forestry and Fisheries. FASE is committed to provide a high level scientific and professional forum for researchers worldwide to publish their original findings and to utilize these novel findings to benefit the society.