Depletion of Soil Water-Extractable Organic Matter With Long-Term Coverage by Impervious Surfaces

Wang, Yinghui1,2,3; Zhang, Qiang1,2; Majidzadeh, Hamed4; He, Chen5; Shi, Quan5; Kong, Sifang6; Yang, Zhibing2; Wang, Junjian1,2

2021-07-21

10.3389/fenvs.2021.714311

FRONTIERS IN ENVIRONMENTAL SCIENCE   影响因子和分区

2296-665X

Water-extractable organic matter (WEOM) in soil is the critical substrate that fuels microbial-driven biogeochemical cycles. However, questions remain regarding whether and how expanding impervious surface area under global urbanization may alter soil WEOM cycling. Based on absorbance and fluorescence spectroscopy and Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS), we compared the content and chemical signatures of soil WEOM under impervious surfaces with those in adjoining open areas and evaluated the impacts of types (complete sealing by concrete and partial sealing by house structures) and durations (1.5, 27, and 114 years) of impervious surface coverage. The content of soil WEOM and its chromophoric and fluorescent fractions were not significantly changed (less than 20%) after 1.5 years of coverage by concrete and house structures. However, these parameters decreased by more than 30% with 27 and 114 years of coverage by the residential home structures. The microbial-humic-like and protein-like fluorescent WEOM persisted preferentially over the terrestrial-humic-like and nonfluorescent WEOM. FT-ICR MS results suggest various degrees of depletion of biochemical groups in WEOM. While the water-extractable lipid-like compounds increased with 1.5 years of coverage, all studied biochemical groups were depleted with long-term coverage, which might reduce the microbial processing of suberin-derived compounds. This study highlights the remarkable impacts of soil sealing on reducing substrate availability for microbial carbon processing in urban environments.

urbanization impervious surface water-extractable organic matter FT-ICR MS time-dependent change

SCI

英语

第一 ; 通讯

National Natural Science Foundation of China[41807360] ; Guangdong Natural Science Funds for Distinguished Young Scholar[2021B1515020082] ; Key Platform and Scientific Research Projects of Guangdong Provincial Education Department["2018KTSCX199","2019KZDXM028","2019GKTSCX092","2020KCXTD006"] ; Shenzhen Science & Technology Project["SZIITWDZC 2021A01","LHPY-2019017","KJ 2020D018"]

Environmental Sciences & Ecology

Environmental Sciences

WOS:000680863600001

FRONTIERS MEDIA SA

Web of Science

1.Southern Univ Sci & Technol, Sch Environm Sci & Engn, State Environm Protect Key Lab Integrated Surface, Shenzhen, Peoples R China
2.Southern Univ Sci & Technol, Sch Environm Sci & Engn, Guangdong Prov Key Lab Soil & Groundwater Pollut, Shenzhen, Peoples R China
3.Wuhan Univ, State Key Lab Water Resources & Hydropower Engn S, Wuhan, Peoples R China
4.Southern New Hampshire Univ, Environm & Phys Sci Dept, Manchester, NH USA
5.China Univ Petr, Coll Chem Engn, State Key Lab Heavy Oil Proc, Beijing, Peoples R China
6.Shenzhen Inst Informat Technol, Dept Transportat & Environm, Shenzhen, Peoples R China

Wang, Yinghui,Zhang, Qiang,Majidzadeh, Hamed,et al. Depletion of Soil Water-Extractable Organic Matter With Long-Term Coverage by Impervious Surfaces[J]. FRONTIERS IN ENVIRONMENTAL SCIENCE,2021,9.

Wang, Yinghui.,Zhang, Qiang.,Majidzadeh, Hamed.,He, Chen.,Shi, Quan.,...&Wang, Junjian.(2021).Depletion of Soil Water-Extractable Organic Matter With Long-Term Coverage by Impervious Surfaces.FRONTIERS IN ENVIRONMENTAL SCIENCE,9.

Wang, Yinghui,et al."Depletion of Soil Water-Extractable Organic Matter With Long-Term Coverage by Impervious Surfaces".FRONTIERS IN ENVIRONMENTAL SCIENCE 9(2021).