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Chinese Agricultural Science Bulletin ›› 2018, Vol. 34 ›› Issue (12): 98-107.doi: 10.11924/j.issn.1000-6850.casb17030204

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Research Progress of Effects of Nitrogen Deposition on Soil Nitrogen Budget in Boreal Forests

  

  • Received:2017-03-30 Revised:2018-04-04 Accepted:2017-06-19 Online:2018-05-03 Published:2018-05-03

Abstract: Increased nitrogen deposition is one of the most important scenarios of global climate change and has had a serious impact on the global nitrogen cycle and may significantly alter ecosystem health and services. Boreal forests, as the second largest biome on the earth after tropical forests, accounts for 30% of the global forest area, and its soil subsystem plays an important role in regulating the nitrogen cycle of forest ecosystems and coping with global climate change. The effect of nitrogen deposition on soil nitrogen balance in boreal forest has been widely concerned and has become a hot issue in the field of global change science. At the same time, soil nitrogen balance is the main link of soil material exchange and energy conversion, and the response to nitrogen deposition is complex and changeable. Therefore, in order to understand the effect of atmospheric nitrogen deposition on soil nitrogen balance in boreal forest, the author summarized the domestic and foreign related research results in recent years, from the soil nitrogen input (biological nitrogen fixation and litter decomposition)、nitrogen storage (microbial solidification and ectomycorrhizal survival)、nitrogen output (mineralization, nitrification, denitrification, and leaching) and the trend of soil total nitrogen pool respectively to analyze the response of soil nitrogen balance to atmospheric nitrogen deposition, which can provide reference data for scientifically assessing the effect of nitrogen deposition on soil nitrogen balance in boreal forest.

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