Changes in soil carbon sequestration and emission in different succession stages of biological soil crusts in a sand-binding area

نویسندگان

چکیده

Abstract Background We investigated the spatio-temporal dynamics of soil carbon dioxide (CO 2 )- and methane (CH 4 )-flux during biological crust (BSCs) deposition in a sand-binding area eastern Chinese Hobq Desert. The trends organic (C) content density were analyzed this process. sampling sites comprised mobile dune (control) those with algal, lichen, moss crust-fixed sands. desert CO - CH -flux, temperature, water measured from May to October 2017 2018. Simultaneously, C by stratification. Results variation -flux was apparent. average fluxes control, 1.67, 2.61, 5.83, 6.84 mmol m −2 h −1 , respectively, growing season, -fluxes four − 1.13, 3.66, 3.77 µmol respectively. Soil temperature significantly positively correlated but could not influence absorption, flux had minimal correlation content. total at all different decreased as follows: > lichen algal control; moreover, it depth sites. accumulation enhance emissions. Conclusion In semi-arid desert, artificial planting promote sand fixation BSCs succession; therefore, increasing storage capacity soils decreasing emissions alter cycle pattern ecosystems. is major factor controlling vegetation restoration, development response patterns moisture conditions soils. results provide scientific basis for studying

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ژورنال

عنوان ژورنال: Carbon Balance and Management

سال: 2021

ISSN: ['1750-0680']

DOI: https://doi.org/10.1186/s13021-021-00190-7