Research Progress on Cyclic Process of Soil C and N Under Dry-Wet Alternation

doi:10.14088/j.cnki.issn0439-8114.2018.17.002

Abstract

Abstract: Under the alternating wet and dry conditions, the effects of C, N circulation, agglomeration structure, expansion and contraction, microorganism and enzyme activity in soils were comprehensively reviewed. Studies showed that, the dry-wet alternation had an impact on organic C mineralization, humification and nitrogen mineralization, nitrification and denitrification, and which had a close relation with the aggregate structure, expansion and contraction, microorganism and enzyme activities in soils. In addition, according to the deficiencies of current research, the future research direction was proposed, and the relationship between soil C, N cycling processes and the soil microbial characteristics under wet-dry alternation conditions was considered, which provided a scientific basis for further developing the transformation of C,N circulation in soils under wet-dry alternation conditions and agricultural production.

Key words: wet-dry alternation, C, N mineralization, humification, nitrification and denitrification, physical properties, biological properties

CLC Number:

QIN Hai-lan, ZHU Jin-shan, LUO You-jin, ZHANG Jia-le, CAO Shi-xuan, ZHANG Hui. Research Progress on Cyclic Process of Soil C and N Under Dry-Wet Alternation[J]. HUBEI AGRICULTURAL SCIENCES, 2018, 57(17): 11-14.

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