文献类型： 外文期刊

作者： Liu, Enke ¹ ; Zhou, Jie ¹ ; Yang, Xiao ¹ ; Jin, Tao ² ; Zhao, Bingqiang ⁴ ; Li, Lili ⁵ ; Wen, Yanchen ⁴ ; Soldatova, Evgeniya ⁶ ; Zamanian, Kazem ⁷ ; Gopalakrishnan, Subramaniam ⁹ ; Mei, Xurong ¹⁰ ; Kuzyakov, Yakov ¹² ;

作者机构： 1.Chinese Acad Agr Sci, Inst Environm & Sustainable Dev Agr, Beijing 100081, Peoples R China

2.State Key Lab Hulless Barley & Yak Germplasm Resou, Lhasa 850002, Xizang, Peoples R China

3.Georg August Univ Gottingen, Dept Crop Sci, Biogeochem Agroecosystems, D-37075 Gottingen, Germany

4.Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Beijing 100081, Peoples R China

5.Pingliang Acad Agr Sci, Pingliang 744000, Gansu, Peoples R China

6.Univ Tyumen, 6 Volodarskogo St, Tyumen 625003, Russia

7.Leibniz Univ Hannover, Inst Soil Sci, D-30419 Hannover, Germany

8.Nanjing Univ Informat Sci & Technol, Sch Geog Sci, Nanjing 210044, Peoples R China

9.Int Crops Res Inst Semi Arid Trop, Patancheru 502324, India

10.Minist Agr & Rural Affairs Peoples Republ China MA, Key Lab Agr Environm, Beijing 100081, Peoples R China

11.Minist Agr & Rural Affairs Peoples Republ China MA, Key Lab Dryland Agr, Beijing 100081, Peoples R China

12.Univ Gottingen, Dept Soil Sci Temperate Ecosyst, D-37077 Gottingen, Germany

13.RUDN Univ, Peoples Friendship Univ Russia, Moscow 117198, Russia

14.Kazan Fed Univ, Inst Environm Sci, Kazan 420049, Russia

关键词： Pedogenic and geogenic carbonates; C-13 isotope application; Carbon sequestration; Mineral and organic fertilization; Land use practices

期刊名称：ENVIRONMENTAL CHEMISTRY LETTERS （ 影响因子：15.7； 五年影响因子：14.2 ）

ISSN： 1610-3653

年卷期： 2023 年

页码：

收录情况： SCI

摘要： Soil carbon is major driver of climate in the long term because soil can either decrease global warming by carbon sequestration or increase warming by emissions of greenhouse gases. Soil inorganic carbon is mainly composed of carbonates and represents globally more than half of the total soil carbon stock up to a 2-m depth. The dissolution of carbonates by fertilization-induced acidification may offset the global efforts aimed at organic carbon sequestration, yet this process is poorly understood. Here, we evaluated the effects of fertilization strategies on inorganic carbon contents and stocks to 120 cm soil depth by using natural delta C-13 signature of organic and inorganic carbon in 32- and 40-year field experiments. Results show that long-term application of mineral nitrogen and phosphorous fertilizers acidified soils by 0.2 pH units. This caused inorganic carbon dissolution and carbon dioxide emissions of 9-12 Mg C per hectare, representing 12-18% of the initial stock in the top 60 cm. By contrast, manure application increased inorganic carbon stock by 8.9-11 Mg C per hectare, representing 4.8-17% of the initial stock up to 120 cm depth. The main pathway of inorganic carbon accumulation under organic fertilization is the neoformation of pedogenic carbonates and the conservation of lithogenic carbonates. Manure combined with mineral fertilizers did not affect inorganic carbon and therefore provides an optimal solution to mitigate carbon losses from soil.