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Ying yong sheng tai xue bao = The journal of applied ecology / Zhongguo sheng tai xue xue hui, Zhongguo ke xue yuan Shenyang ying yong sheng tai yan jiu suo zhu ban.
Vol. 22, No: 8, 2011, Pages: 2193 - 200.


[Effects of seasonal snow cover on soil nitrogen transformation in alpine ecosystem: a review].

Liu L, Wu Y, He YX, Wu N, Sun G, Zhang L, Xu JJ.

College of Animal Science and Technology, Sichuan Agricultural University, Ya' an 625014, Sichuan, China.

Abstract

Seasonal snow cover has pronounced effects on the soil nitrogen concentration and transformation in alpine ecosystem. Snowfall is an important form of nitrogen deposition, which directly affects the content of soil available nitrogen. Different depths and different duration of snow cover caused by snowfall may lead the heterogeneity of abiotic factors (soil temperature and moisture) and biotic factors (soil microbes, alpine plants, and alpine animals), and further, produce complicated effects on the mineralization and immobilization of soil nitrogen. This paper introduced in emphasis the inherent mechanisms of soil nitrogen mineralization and leaching under the effects of frequent freeze-thaw events during the durative melting of snow cover, and summarized the main research results of field in situ experiments about the effects of seasonal snow cover on soil nitrogen in alpine ecosystem based on the possible changes in snow cover in the future. Some suggestions with regard to the effects of seasonal snow cover on soil nitrogen were put forward.

Keywords:soil nitrogen concentration,soil microbes, alpine plants, alpine animals,mineralization, immobilization of soil nitrogen.


 

 
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