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文中通过静态箱采样,利用Turbo Matrix 100型热解析仪与气相色谱联用法,分析了环境因子,如水分、温度、光照和玉米秸秆添加等对绿洲干旱区土壤羰基硫(COS)和二硫化碳(CS_2)交换通量的影响。结果表明:干旱土壤COS和CS_2的平均通量分别为1.17、3.28pmol·m~(-2)·s~(-1),淹水土壤COS和CS_2的平均通量分别为-11.11、-3.41pmol·m~(-2)·s~(-1),干旱土壤作为COS和CS_2的源,淹水土壤则为其汇,且淹水土壤交换强度高于干旱土壤。与淹水土壤相比,玉米秸秆的添加使得COS和CS_2的交换强度分别提高了34.2%和149.27%。同时测得COS具有明显的日变化规律,干旱土壤总交换量基本平衡,表现为微弱的释放,淹水土壤总体表现为较强的吸收。CS_2则表现不明显。水分和温度虽然与交换通量之间没有显著相关性,但对交换方向和强度有重要影响。对以上过程的讨论提示我们非生物产生和消耗过程存在的可能性。
In this paper, the effects of environmental factors, such as moisture, temperature, light and corn stalk, on soil carbonyl sulfide (COS) and carbon disulfide (CS2) in the oasis arid region were analyzed by static box sampling and using Turbo Matrix 100 thermal analyzer and gas chromatography combined method. ) The impact of exchange flux. The results showed that the average fluxes of COS and CS_2 in arid soil were 1.17 and 3.28 pmol · m -2 · s -1, respectively. The average fluxes of COS and CS_2 in flooded soil were -11.11 and -3.41 (-1) pmol · m -2 · s -1. As the sources of COS and CS_2, the arid soils were submerged, and the exchange intensity of submerged soils was higher than that of arid soils. Compared with the flooded soil, the addition of corn stalks increased the exchange intensities of COS and CS_2 by 34.2% and 149.27%, respectively. At the same time, COS has a clear diurnal variation rule. The total amount of exchange of arid soil is basically balanced, showing a weak release, while the flooded soil shows a strong absorption. CS_2 is not obvious. Moisture and temperature, although not significantly related to the exchange flux, have a significant effect on the exchange direction and intensity. The discussion of the process above suggests the possibility of our non-biological production and consumption processes.