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Composition of a Soil Organic Carbon Increment under Different Vegetable Cultivation Patterns: A Study Using Three SOC Pools

文献类型： 外文期刊

作者： Liu, Yang 1 ; Liu, Xiaoyu 3 ; Feng, Yanfang 4 ; Yu, Dongsheng 1 ; Shi, Xuezheng 1 ;

作者机构： 1.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Peoples R China

2.Jiangsu Acad Agr Sci, Inst Agr Informat, Res Ctr IoT Agr Applicat, Nanjing 210014, Peoples R China

3.Jiangsu Vocat Coll Agr & Forestry, Jurong 212400, Peoples R China

4.Jiangsu Acad Agr Sci, Inst Agr Resources & Environm, Nanjing 210014, Peoples R China

关键词： Open field; Greenhouse cultivation; Soil organic carbon pool; Vegetable cultivation

期刊名称：SUSTAINABILITY （ 影响因子：3.251； 五年影响因子：3.473 ）

ISSN： 2071-1050

年卷期： 2019 年 11 卷 1 期

页码：

收录情况： SCI

摘要： Previous studies suggest that vegetable cultivation increases soil organic carbon (SOC) storage. However, how stable the SOC increment is, and how greenhouse cultivation contributes to the SOC increment in terms of quantity and stability, remains unclear. Soil samples were taken from three typical vegetable cultivation pattern fields: open field (OF), seasonal greenhouse (SG), and permanent greenhouse (PG), as well as adjacent non-vegetable fields. Three conceptual SOC pools, including active (C-a), slow (C-s), and resistant (C-r) pools were fractionated to evaluate SOC sequestration and its stability in vegetable cultivation. The results indicate that vegetable cultivation is associated with greater stored SOC compared with non-vegetable cultivation (SOC increased by 57.9% on average). Using non-vegetable fields as a reference, SOC increments by vegetable cultivation were associated with a higher proportion of C-a (3.7-6.6%) than the reference fields (1.0-2.0%), indicating that the SOC increments might be easily decomposed. Among the three vegetable cultivation patterns, SG, with a higher increase in C-r, is recommended due to its relatively more stable SOC sequestration. Overall, vegetable cultivation could enhance the quantity of SOC, but the stability of the SOC increment is affected by the vegetable cultivation pattern.

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