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Sökning: onr:"swepub:oai:DiVA.org:kth-249878" > Managing nitrogen t...

  • Yu, ChaoQingTsinghua Univ, Dept Earth Syst Sci, Minist Educ, Key Lab Earth Syst Modeling, Beijing, Peoples R China.;Cross Strait Tsinghua Res Inst, AI Earth Lab, Xiamen, Peoples R China. (författare)

Managing nitrogen to restore water quality in China

  • Artikel/kapitelEngelska2019

Förlag, utgivningsår, omfång ...

  • Nature Publishing Group,2019
  • printrdacarrier

Nummerbeteckningar

  • LIBRIS-ID:oai:DiVA.org:kth-249878
  • urn:nbn:se:kth:diva-249878urn
  • https://doi.org/10.1038/s41586-019-1001-1DOI

Kompletterande språkuppgifter

  • Språk:engelska
  • Sammanfattning på:engelska

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Klassifikation

  • Ämneskategori:ref swepub-contenttype
  • Ämneskategori:art swepub-publicationtype

Anmärkningar

  • QC 20190423
  • The nitrogen cycle has been radically changed by human activities(1). China consumes nearly one third of the world's nitrogen fertilizers. The excessive application of fertilizers(2,3) and increased nitrogen discharge from livestock, domestic and industrial sources have resulted in pervasive water pollution. Quantifying a nitrogen 'boundary'(4) in heterogeneous environments is important for the effective management of local water quality. Here we use a combination of water-quality observations and simulated nitrogen discharge from agricultural and other sources to estimate spatial patterns of nitrogen discharge into water bodies across China from 1955 to 2014. We find that the critical surface-water quality standard (1.0 milligrams of nitrogen per litre) was being exceeded in most provinces by the mid-1980s, and that current rates of anthropogenic nitrogen discharge (14.5 +/- 3.1 megatonnes of nitrogen per year) to fresh water are about 2.7 times the estimated 'safe' nitrogen discharge threshold (5.2 +/- 0.7 megatonnes of nitrogen per year). Current efforts to reduce pollution through wastewater treatment and by improving cropland nitrogen management can partially remedy this situation. Domestic wastewater treatment has helped to reduce net discharge by 0.7 +/- 0.1 megatonnes in 2014, but at high monetary and energy costs. Improved cropland nitrogen management could remove another 2.3 +/- 0.3 megatonnes of nitrogen per year-about 25 per cent of the excess discharge to fresh water. Successfully restoring a clean water environment in China will further require transformational changes to boost the national nutrient recycling rate from its current average of 36 per cent to about 87 per cent, which is a level typical of traditional Chinese agriculture. Although ambitious, such a high level of nitrogen recycling is technologically achievable at an estimated capital cost of approximately 100 billion US dollars and operating costs of 18-29 billion US dollars per year, and could provide co-benefits such as recycled wastewater for crop irrigation and improved environmental quality and ecosystem services.

Ämnesord och genrebeteckningar

Biuppslag (personer, institutioner, konferenser, titlar ...)

  • Huang, XiaoTsinghua Univ, Dept Earth Syst Sci, Minist Educ, Key Lab Earth Syst Modeling, Beijing, Peoples R China.;Norwegian Inst Bioecon Res, Saerheim, Norway. (författare)
  • Chen, HanTsinghua Univ, Dept Earth Syst Sci, Minist Educ, Key Lab Earth Syst Modeling, Beijing, Peoples R China. (författare)
  • Godfray, H. Charles J.Univ Oxford, Dept Zool, Oxford, England.;Univ Oxford, Oxford Martin Sch, Oxford, England. (författare)
  • Wright, Jonathon S.Tsinghua Univ, Dept Earth Syst Sci, Minist Educ, Key Lab Earth Syst Modeling, Beijing, Peoples R China. (författare)
  • Hall, Jim W.Univ Oxford, Environm Change Inst, Oxford, England. (författare)
  • Gong, PengTsinghua Univ, Dept Earth Syst Sci, Minist Educ, Key Lab Earth Syst Modeling, Beijing, Peoples R China.;Cross Strait Tsinghua Res Inst, AI Earth Lab, Xiamen, Peoples R China. (författare)
  • Ni, ShaoQiangTsinghua Univ, Dept Earth Syst Sci, Minist Educ, Key Lab Earth Syst Modeling, Beijing, Peoples R China. (författare)
  • Qiao, ShengChaoTsinghua Univ, Dept Earth Syst Sci, Minist Educ, Key Lab Earth Syst Modeling, Beijing, Peoples R China. (författare)
  • Huang, GuoRuiTsinghua Univ, Dept Earth Syst Sci, Minist Educ, Key Lab Earth Syst Modeling, Beijing, Peoples R China. (författare)
  • Xiao, YuChenTsinghua Univ, Dept Earth Syst Sci, Minist Educ, Key Lab Earth Syst Modeling, Beijing, Peoples R China. (författare)
  • Zhang, JieTsinghua Univ, Dept Earth Syst Sci, Minist Educ, Key Lab Earth Syst Modeling, Beijing, Peoples R China. (författare)
  • Feng, ZhaoTsinghua Univ, Dept Earth Syst Sci, Minist Educ, Key Lab Earth Syst Modeling, Beijing, Peoples R China. (författare)
  • Ju, XiaoTangChina Agr Univ, Coll Resources & Environm Sci, Beijing, Peoples R China. (författare)
  • Ciais, PhilippeLSCE, Gif Sur Yvette, France. (författare)
  • Stenseth, Nils Chr.Tsinghua Univ, Dept Earth Syst Sci, Minist Educ, Key Lab Earth Syst Modeling, Beijing, Peoples R China.;Univ Oslo, CEES, Oslo, Norway. (författare)
  • Hessen, Dag O.Univ Oslo, Sect Aquat Biol & Toxicol AQUA, Oslo, Norway. (författare)
  • Sun, ZhanLiLeibniz Inst Agr Dev Transit Econ IAMO, Halle, Saale, Germany. (författare)
  • Yu, LeTsinghua Univ, Dept Earth Syst Sci, Minist Educ, Key Lab Earth Syst Modeling, Beijing, Peoples R China. (författare)
  • Cai, WenJiaTsinghua Univ, Dept Earth Syst Sci, Minist Educ, Key Lab Earth Syst Modeling, Beijing, Peoples R China. (författare)
  • Fu, HaoHuanTsinghua Univ, Dept Earth Syst Sci, Minist Educ, Key Lab Earth Syst Modeling, Beijing, Peoples R China. (författare)
  • Huang, XiaoMengTsinghua Univ, Dept Earth Syst Sci, Minist Educ, Key Lab Earth Syst Modeling, Beijing, Peoples R China. (författare)
  • Zhang, ChiKTH,Skolan för kemi, bioteknologi och hälsa (CBH)(Swepub:kth)u17e9mik (författare)
  • Liu, HongBinChinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Beijing, Peoples R China. (författare)
  • Taylor, JamesNewcastle Univ, Sch Nat & Environm Sci, Newcastle, England. (författare)
  • Tsinghua Univ, Dept Earth Syst Sci, Minist Educ, Key Lab Earth Syst Modeling, Beijing, Peoples R China.;Cross Strait Tsinghua Res Inst, AI Earth Lab, Xiamen, Peoples R China.Tsinghua Univ, Dept Earth Syst Sci, Minist Educ, Key Lab Earth Syst Modeling, Beijing, Peoples R China.;Norwegian Inst Bioecon Res, Saerheim, Norway. (creator_code:org_t)

Sammanhörande titlar

  • Ingår i:Nature: Nature Publishing Group567:7749, s. 516-5200028-08361476-4687

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