GSTDTAP  > 地球科学
DOI10.5194/acp-19-3873-2019
Soil-atmosphere exchange of carbonyl sulfide in a Mediterranean citrus orchard
Yang, Fulin1,2; Qubaja, Rafat1; Tatarinov, Fyodor1; Stern, Rafael1; Yakir, Dan1
2019-03-25
发表期刊ATMOSPHERIC CHEMISTRY AND PHYSICS
ISSN1680-7316
EISSN1680-7324
出版年2019
卷号19期号:6页码:3873-3883
文章类型Article
语种英语
国家Israel; Peoples R China
英文摘要

Carbonyl sulfide (COS) is used as a tracer of CO2 exchange at the ecosystem and larger scales. The robustness of this approach depends on knowledge of the soil contribution to the ecosystem fluxes, which is uncertain at present. We assessed the spatial and temporal variations in soil COS and CO2 fluxes in a Mediterranean citrus orchard combining surface flux chambers and soil concentration gradients. The spatial heterogeneity in soil COS exchange indicated net uptake below and between trees of up to 4.6 pmol m(-2) s(-1) and net emission in sun-exposed soil between rows of up to 2.6 pmol m(-2) s(-1), with an overall mean uptake value of 1.1 +/- 0.1 pmol m(-2) s(-1). Soil COS concentrations decreased with soil depth from atmospheric levels of similar to 450 to similar to 100 ppt at 20 cm depth, while CO2 concentrations increased from similar to 400 to similar to 5000 ppm. COS flux estimates from the soil concentration gradients were, on average, 1.0 +/- 0.3 pmol m(-2) s(-1), consistent with the chamber measurements. A soil COS flux algorithm driven by soil moisture and temperature (5 cm depth) and distance from the nearest tree, could explain 75% of variance in soil COS flux. Soil relative uptake, the normalized ratio of COS to CO2 fluxes was, on average, 0.4 +/- 0.3 and showed a general exponential response to soil temperature. The results indicated that soil COS fluxes at our study site were dominated by uptake, with relatively small net fluxes compared to both soil respiration and reported canopy COS fluxes. Such a result should facilitate the application of COS as a powerful tracer of ecosystem CO2 exchange.


领域地球科学
收录类别SCI-E
WOS记录号WOS:000462349600007
WOS关键词THIOBACILLUS-THIOPARUS ; DISULFIDE CS2 ; COS ; FLUXES ; FOREST ; OCS ; WATER ; TRANSPIRATION ; DEGRADATION ; CHEMISTRY
WOS类目Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
引用统计
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/181697
专题地球科学
作者单位1.Weizmann Inst Sci, Earth & Planetary Sci, IL-76100 Rehovot, Israel;
2.Fujian Agr & Forestry Univ, Coll Anim Sci, Fuzhou 350002, Peoples R China
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GB/T 7714
Yang, Fulin,Qubaja, Rafat,Tatarinov, Fyodor,et al. Soil-atmosphere exchange of carbonyl sulfide in a Mediterranean citrus orchard[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2019,19(6):3873-3883.
APA Yang, Fulin,Qubaja, Rafat,Tatarinov, Fyodor,Stern, Rafael,&Yakir, Dan.(2019).Soil-atmosphere exchange of carbonyl sulfide in a Mediterranean citrus orchard.ATMOSPHERIC CHEMISTRY AND PHYSICS,19(6),3873-3883.
MLA Yang, Fulin,et al."Soil-atmosphere exchange of carbonyl sulfide in a Mediterranean citrus orchard".ATMOSPHERIC CHEMISTRY AND PHYSICS 19.6(2019):3873-3883.
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