Wollastonite addition can significantly inhibit greenhouse gas emissions of freeze-thaw farmland soil

被引:1
|
作者
Chen, Haohui [1 ,2 ,3 ]
Liu, Chuanxing [1 ,2 ,3 ]
Sun, Qiuyu [1 ,2 ,3 ]
Li, Boyan [1 ,2 ,3 ]
Jiang, Qiuxiang [1 ,2 ,3 ]
Wang, Zilong [1 ,2 ,3 ]
机构
[1] Northeast Agr Univ, Sch Water Conservancy & Civil Engn, Harbin 150030, Heilongjiang, Peoples R China
[2] Northeast Agr Univ, Key Lab Effect Utilizat Agr Water Resources, Minist Agr, Harbin 150030, Heilongjiang, Peoples R China
[3] Northeast Agr Univ, Heilongjiang Prov Key Lab Water Resources & Water, Harbin 150030, Heilongjiang, Peoples R China
基金
中国国家自然科学基金;
关键词
Winter warming; Freeze-thaw cycle; Wollastonite; Farmland soil; Greenhouse gases; Soil nutrients; Infrared radiation heating method; CARBON; NITROGEN; SEQUESTRATION; TEMPERATURE; ECOSYSTEMS; MECHANISM; RESPONSES; CYCLES;
D O I
10.1016/j.eti.2024.103547
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
We investigated the effects of different treatments on soil nutrients and greenhouse gas (GHG) emissions in winter. A field experiment was conducted with four treatments: control (C), wollastonite application (CaSiO3+C), winter warming (WW), and wollastonite application + winter warming (CaSiO3+WW). The results showed the following: (1) Under the background of winter warming, the fluctuation of soil moisture and temperature increased; most of the soil carbon and nitrogen nutrients were lost; the cumulative fluxes of N2O, CH4, and CO2 increased by 58.18 %, 196.21 %, and 63.00 %, respectively, and global warming potential (GWP) increased by 62.26 %. (2) The contents of SOC, MBC, TN, TDN, NH4+-N, and MBC:MBN of farmland soil decreased after wollastonite application in winter; the cumulative fluxes of N2O, CH4, and CO2 decreased by 41.42 %, 71.72 %, and 40.84 %, respectively, and the GWP decreased by 41.30 %. (3) Under the background of winter warming, the application of wollastonite led to significant decreases in the contents of DOC, MBN, and Ca2+ in farmland soil; the cumulative fluxes of N2O, CH4, and CO2 were reduced by 47.76 %, 106.31 %, and 29.23 %, respectively, and the GWP was reduced by 30.95 %. Multiple linear regression showed that soil surface water-thermal, nutrients, and microorganisms together affected N2O emissions (R2 = 0.759). CH4 was mainly affected by soil nutrients and microorganisms (R2 = 0.237), and soil surface water-thermal and nutrients affected the CO2 flux (R2 = 0.771). Soil nutrients were the key factors affecting N2O and CH4 emissions, and the soil surface water-thermal was the key factor affecting CO2 emissions.
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页数:13
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