Stability of elemental carbon in a savanna soil
Stability of elemental carbon in a savanna soil
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DOI：
10.1029/1999gb900067
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发表时间：
1999-12-01
影响因子：
5.2
通讯作者：
Frost, P
中科院分区：
文献类型：
--
作者：
Bird, MI;Moyo, C;Frost, P
(W)我们研究了抗氧化元素碳（OREC）在津巴布韦Matopos火灾试验场的沙质稀树草原土壤中的稳定性。在过去的50年里，该地点对一些土壤地块进行了防火保护，从而可以比较那些受到防火保护的地块和继续燃烧的地块之间的OREC丰度。火灾保护土壤0-5 cm OREC总存量估计为2.0+/-0.5 mg cm(-2)；研究地点的“自然”OREC库存约为3.8+/-0.5 mg cm（-2）的一半（每1-5年烧毁的地块的平均值）。在保护地0-5厘米间隔的土壤中，OREC自然损失的相关半衰期计算为2000亩)相当可观
(W)e have investigated the stability of oxidation-resistant elemental carbon (OREC) in a sandy savanna soil at the Matopos fire trial site, Zimbabwe. The protection of some soil plots from fire for the last 50 years at this site has enabled a comparison of OREC abundances between those plots which have been protected from fire and plots which have continued to be burnt. The total 0-5 cm OREC inventory of the soil protected from fire is estimated to be 2.0+/-0.5 mg cm(-2); approximately half the "natural" OREC inventory at the study site of 3.8+/-0.5 mg cm(-2) (the mean for plots burnt every 1-5 years). The associated half-life for natural OREC loss from the 0-5 cm interval of the protected plots is calculated to be 2000 mu m) in the soil being considerably