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INTENSIFICATION OF GRASSLAND-BASED DAIRY PRODUCTION AND ITS IMPACTS ON LAND, NITROGEN AND PHOSPHORUS

Jouke OENEMA, Oene OENEMA

Frontiers of Agricultural Science and Engineering 2021, Volume 8, Issue 1,   Pages 130-147 doi: 10.15302/J-FASE-2020376

Abstract: Many grassland-based dairy farms are intensifying production, i.e., produce more milk per ha of land in response to the increasing demand for milk (by about 2% per year) in a globalized market. However, intensive dairy farming has been implicated for its resources use, ammonia and greenhouse gas emissions, and eutrophication impacts. This paper addresses the question of how the intensity of dairy production relates to N and P surpluses and use efficiencies on farms subjected to agri-environmental regulations. Detailed monitoring data were analyzed from 2858 grassland-based dairy farms in The Netherlands for the year 2015. The farms produced on average 925 Mg·yr milk. Milk production per ha ranged from<10 to>30 Mg·ha ·yr . Purchased feed and manure export strongly increased with the level of intensification. Surpluses of N and P at farm level remained constant and ammonia emissions per kg milk decreased with the level of intensification. In conclusion, N and P surpluses did not differ much among dairy farms greatly differing in intensity due to legal N and P application limits and obligatory export of manure surpluses to other farms. Further, N and P use efficiencies also did not differ among dairy farms differing in intensity provided the externalization of feed production was accounted for. This paper provides lessons for proper monitoring and control of N and P cycling in dairy farming.

Keywords： ammonia     externalization     feed     forage maize     front runners     manure production     milk yield     nitrogen surplus    

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Performance of bioferric-submerged membrane bioreactor for dyeing wastewater treatment

ZOU Haiyan, XI Danli

Frontiers of Environmental Science & Engineering 2007, Volume 1, Issue 3,   Pages 374-380 doi: 10.1007/s11783-007-0064-7

Abstract: The stable running period in Bioferric-SMBR was 2.5 times of that in common SMBR when there was no surplus

Keywords： hydroxide     surplus     aeration     SMBR     Bioferric process    

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SUSTAINABLE NITROGEN MANAGEMENT IN AUSTRALIAN AGROECOSYSTEMS: CHALLENGES AND OPPORTUNITIES

Frontiers of Agricultural Science and Engineering 2022, Volume 9, Issue 3,   Pages 366-372 doi: 10.15302/J-FASE-2022447

Abstract:

● There is huge potential for improvement of nitrogen management in

Keywords： Australian agroecosystems     reactive nitrogen     sustainable development    

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SUSTAINABLE NITROGEN MANAGEMENT FOR VEGETABLE PRODUCTION IN CHINA

Frontiers of Agricultural Science and Engineering 2022, Volume 9, Issue 3,   Pages 373-385 doi: 10.15302/J-FASE-2022455

Abstract:

● Sustainable nitrogen management strategies for Chinese vegetable production

Keywords： enhanced-efficiency nitrogen fertilizer     integrated knowledge and products strategy     nitrogen rate     reactivenitrogen loss     vegetable     yield    

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EFFECTS OF SUBSTITUTION OF MINERAL NITROGEN WITH ORGANIC AMENDMENTS ON NITROGEN LOSS FROM SLOPING CROPLAND

Frontiers of Agricultural Science and Engineering 2022, Volume 9, Issue 3,   Pages 396-406 doi: 10.15302/J-FASE-2022456

Abstract:

● Interflow acts as the dominant pathway for N loss loadings.

Keywords： improved fertilization regime     interflow     nitrogen forms     nitrogen leaching     purple soil     sloping cropland    

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SOIL NITROGEN CYCLING AND ENVIRONMENTAL IMPACTS IN THE SUBTROPICAL HILLY REGION OF CHINA: EVIDENCE FROM

Frontiers of Agricultural Science and Engineering 2022, Volume 9, Issue 3,   Pages 407-424 doi: 10.15302/J-FASE-2022448

Abstract:

● Soil nitrogen fluxes and influencing factors were reviewed in the

Keywords： nitrogen cycling     soil nitrogen     nitrogen deposition     greenhouse gases emission     non-point source pollution     nitrogen use efficiency    

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

Frontiers of Agricultural Science and Engineering 2022, Volume 9, Issue 3,   Pages 465-474 doi: 10.15302/J-FASE-2022454

Abstract:

● It is necessary to address the N flows and their impacts on environment in China for sustainable N management.

Keywords： barriers     future management     ammonia emissions     nitrogen input     water N pollution    

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Nitrogen distribution in the products from the hydrothermal liquefaction of sp. and sp.

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 6,   Pages 985-995 doi: 10.1007/s11705-021-2126-y

Abstract: The high contents of nitrogen-containing organic compounds in biocrude obtained from hydrothermal liquefactionThree main forms of nitrogen-containing organic compounds including nitrogen-heterocyclic compounds,The contents of nitrogen-heterocyclic compounds decreased with temperature while amide kept increasingThe effect of residence time on the components of nitrogen-containing organic compounds was similar withcomparing with the nitrogen in neutral amino acids of Chlorella sp.

Keywords： microalgae     hydrothermal liquefaction     biocrude     nitrogen distribution    

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PROGRESS ON IMPROVING AGRICULTURAL NITROGEN USE EFFICIENCY: UK-CHINA VIRTUAL JOINT CENTERS ON NITROGEN

Frontiers of Agricultural Science and Engineering 2022, Volume 9, Issue 3,   Pages 475-489 doi: 10.15302/J-FASE-2022459

Abstract:

● Virtual joint centers on N agronomy were established between UK and China.

Keywords： CINAg     N-CIRCLE     nitrogen use efficiency     reactive nitrogen     sustainable production    

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ECOLOGICAL EFFECTS OF NITROGEN DEPOSITION ON URBAN FORESTS: AN OVERVIEW

Frontiers of Agricultural Science and Engineering 2022, Volume 9, Issue 3,   Pages 445-456 doi: 10.15302/J-FASE-2021429

Abstract:

● Patterns and effects of N deposition on urban forests are reviewed.

Keywords： biodiversity     carbon sequestration     nitrogen deposition     nutrient imbalance     soil acidification     urban    

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NITROGEN USE AND MANAGEMENT IN ORCHARDS AND VEGETABLE FIELDS IN CHINA: CHALLENGES AND SOLUTIONS

Frontiers of Agricultural Science and Engineering 2022, Volume 9, Issue 3,   Pages 386-395 doi: 10.15302/J-FASE-2022443

Abstract:

● Excessive application of N fertilizers in orchards and vegetable fields (OVFs) in China is particularly common.

Keywords： nitrogen fate     nitrogen fertilizer     orchards     vegetable fields    

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Advanced nitrogen and phosphorus removal in A

Jianhua WANG, Yongzhen PENG, Yongzhi CHEN

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 3,   Pages 474-480 doi: 10.1007/s11783-011-0360-0

Abstract: bigger anoxic zone and biologic aerated filter (A O-BAF) system was operated to treat low carbon-to-nitrogenaccumulating organisms (DPAOs) played an important role in removing up to 91% of phosphorus along with nitrogenThe average removal efficiency of chemical oxygen demand (COD), total nitrogen (TN), total phosphorus

Keywords： zone and biologic aerated filter (A2O-BAF) system     domestic wastewater with low carbon-to-nitrogenratio     advanced nitrogen and phosphorus removal     denitrifying phosphorus removal    

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CLIMATE-CHANGE-INDUCED TEMPORAL VARIATION IN PRECIPITATION INCREASES NITROGEN LOSSES FROM INTENSIVE CROPPING

Frontiers of Agricultural Science and Engineering 2022, Volume 9, Issue 3,   Pages 457-464 doi: 10.15302/J-FASE-2022452

Abstract: was used to evaluate how increasing temporal variability in precipitation influences crop yields and nitrogen

Keywords： crop yield     fertilizer timing     nitrogen loss     precipitation variability     toy model    

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ROLE OF NITROGEN SENSING AND ITS INTEGRATIVE SIGNALING PATHWAYS IN SHAPING ROOT SYSTEM ARCHITECTURE

Frontiers of Agricultural Science and Engineering 2022, Volume 9, Issue 3,   Pages 316-332 doi: 10.15302/J-FASE-2022441

Abstract:

● The Green Revolution broadened the trade-off between yield and nitrogen-use

Keywords： Nitrogen     root system architecture     phytohormone     crosstalk     nitrogen-use efficiency     breeding strategy    

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Enhanced nitrogen removal reliability and efficiency in integrated constructed wetland microcosms using

Yue WEN, Chao XU, Gang LIU, Yi CHEN, Qi ZHOU

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 1,   Pages 140-147 doi: 10.1007/s11783-011-0286-6

Abstract: The purpose of this study is to reduce the seasonal fluctuation and enhance the efficiency of nitrogen, but also enhanced the nitrogen removal efficiency by 50%.The average apparent rate of nitrogen removal in VF2-HSF2 reached to 2.52 gN·m ·d , which doubled thePlant uptake and organic nitrogen sediment accounted for 12% and 6% of the total nitrogen removal inBiologic nitrogen removal was the dominant mechanism, which accounted for 79% and 87% of the total nitrogen

Keywords： constructed wetland     zeolite     bioregeneration     nitrogen removal    

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Title Author Date Type Operation

INTENSIFICATION OF GRASSLAND-BASED DAIRY PRODUCTION AND ITS IMPACTS ON LAND, NITROGEN AND PHOSPHORUS

Jouke OENEMA, Oene OENEMA

Journal Article

Performance of bioferric-submerged membrane bioreactor for dyeing wastewater treatment

ZOU Haiyan, XI Danli

Journal Article

SUSTAINABLE NITROGEN MANAGEMENT IN AUSTRALIAN AGROECOSYSTEMS: CHALLENGES AND OPPORTUNITIES

Journal Article

SUSTAINABLE NITROGEN MANAGEMENT FOR VEGETABLE PRODUCTION IN CHINA

Journal Article

EFFECTS OF SUBSTITUTION OF MINERAL NITROGEN WITH ORGANIC AMENDMENTS ON NITROGEN LOSS FROM SLOPING CROPLAND

Journal Article

SOIL NITROGEN CYCLING AND ENVIRONMENTAL IMPACTS IN THE SUBTROPICAL HILLY REGION OF CHINA: EVIDENCE FROM

Journal Article

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

Journal Article

Nitrogen distribution in the products from the hydrothermal liquefaction of sp. and sp.

Journal Article

PROGRESS ON IMPROVING AGRICULTURAL NITROGEN USE EFFICIENCY: UK-CHINA VIRTUAL JOINT CENTERS ON NITROGEN

Journal Article

ECOLOGICAL EFFECTS OF NITROGEN DEPOSITION ON URBAN FORESTS: AN OVERVIEW

Journal Article

NITROGEN USE AND MANAGEMENT IN ORCHARDS AND VEGETABLE FIELDS IN CHINA: CHALLENGES AND SOLUTIONS

Journal Article

Advanced nitrogen and phosphorus removal in A

Jianhua WANG, Yongzhen PENG, Yongzhi CHEN

Journal Article

CLIMATE-CHANGE-INDUCED TEMPORAL VARIATION IN PRECIPITATION INCREASES NITROGEN LOSSES FROM INTENSIVE CROPPING

Journal Article

ROLE OF NITROGEN SENSING AND ITS INTEGRATIVE SIGNALING PATHWAYS IN SHAPING ROOT SYSTEM ARCHITECTURE

Journal Article

Enhanced nitrogen removal reliability and efficiency in integrated constructed wetland microcosms using

Yue WEN, Chao XU, Gang LIU, Yi CHEN, Qi ZHOU

Journal Article