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首页> 外文期刊>Journal of Agricultural Science >Carbon Stocks and Soil Organic Matter Quality Under Different of Land Uses in the Maranhense Amazon
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Carbon Stocks and Soil Organic Matter Quality Under Different of Land Uses in the Maranhense Amazon

机译：Maranhense亚马逊地区不同土地利用方式下的碳储量和土壤有机质

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摘要

In the face of the traditional model of succession of native environments in pastures or agricultural areas, followed by superpastejo and the concern with emissions of greenhouse gases in the Brazilian Amazon region, this work aims to determine the influence of different land uses on carbon sequestration and soil organic matter changes in the municipality of Pindaré-Mirim, in state of Maranh?o. This study evaluated different uses of the soil: native forest; secondary vegetation (capoeira); degraded pasture and CLFI (Crop-Livestock-Forest Integration) system. The deformed and undisturbed samples were collected at depths: 0.00-0.10, 0.10-0.20, 0.20-0.30, 0.30-0.40, 0.40-0.60, 0.60-0.80 and 0.80-1.00 m. Soil densities were determined by the volumetric ring method, the carbon stocks by the carbon content in the soil evaluating the dry combustion, and the accumulated carbon stocks were calculated in 1.00 m. The physical fractions of the organic matter were determined by means of the granulometric method. At depth 0.0-0.10 m, the soil density in the native forest (1.17 g cm-3) was lower than the average of degraded pasture (1.40 g cm-3). There was no difference in the carbon content between all the land uses up to 0.40 m depth. The accumulated carbon stocks up to 1.00 m ranged from 49.52 Mg ha-1 to 64.41 Mg ha-1 and were higher in the native forest compared to capoeira and the ICLF system. In relation to the accumulated carbon stock, the native forest and degraded pasture were the ones that obtained the highest levels, followed by the capoeira and the CLFI system.
机译：面对牧场或农业地区自然环境的传统继承模型，接着是superpastejo，以及巴西亚马逊地区对温室气体排放的关注，这项工作旨在确定不同土地用途对固碳和碳汇的影响。马拉尼奥州Pindaré-Mirim市的土壤有机质变化。这项研究评估了土壤的不同用途：原生森林;次生植被（卡波耶拉）;退化的牧场和CLFI（作物－畜牧－森林融合）系统。变形和未扰动的样本在以下深度收集：0.00-0.10、0.10-0.20、0.20-0.30、0.30-0.40、0.40-0.60、0.60-0.80和0.80-1.00 m。通过容积环法确定土壤密度，通过土壤中的碳含量评估干燃烧，确定碳储量，并在1.00 m中计算累积的碳储量。有机物的物理分数通过粒度分析法测定。在深度0.0-0.10 m处，原生林的土壤密度（1.17 g cm-3）低于退化草场的平均密度（1.40 g cm-3）。深度不超过0.40 m的所有土地利用之间的碳含量没有差异。高达1.00 m的累积碳储量为49.52 Mg ha-1至64.41 Mg ha-1，并且与卡波耶拉和ICLF系统相比，原生林中的碳储量更高。就累积的碳储量而言，原生森林和退化的牧草是获得最高水平的碳，其次是卡波耶拉和CLFI系统。

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