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首页> 外文期刊>International Journal of Physical Sciences >Soil organic matter and related soil properties in forest, grassland and cultivated land use types
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Soil organic matter and related soil properties in forest, grassland and cultivated land use types

机译：森林，草地和耕地利用类型的土壤有机质及相关土壤性质

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The pattern of soil organic carbon storage is influenced by land use and landscape topo-sequence. The variations in soil carbon and land use also impact soil properties, such as bulk density, pH and soil water. The aim of this study was to determine the effects of selected land uses (forest, grassland and cropland) located in Universiti Malaysia Sabah Campus and soil depth on the soil organic matter, soil carbon and related soil properties. Soil samples from 0 to 15, 15 to 30 and 30 to 45 cm soil depths were collected for organic matter, carbon and pH analysis, and from 0 to 5 and 5 to 10 cm soil depths for soil water and bulk density determination for the cropland, forest and grassland land use types. There were significant differences in organic matter and carbon in forest, grassland and cropland for the three soil depths studied. Organic matter content at the 0 to 15 cm depth of forest, cropland and grassland were estimated at 2.27, 2.07 and 0.83%, respectively. The organic matter content in all land use types decreased land used decreased significantly with soil depth. The top 5 cm of the grassland at sampling time contained 33.2 and 48.53% more soil water than the forest and cropland, respectively. Soil bulk density in cropland soils was higher than for forest and the latter was higher than in grassland. The different land uses and soil depth accounted for the variations of soil carbon stocks. Soil pH was significantly lower in the forest soil.
机译：土壤有机碳储量的格局受土地利用和景观地形序列的影响。土壤碳和土地利用的变化也会影响土壤性质，例如堆积密度，pH和土壤水分。这项研究的目的是确定位于马来西亚沙巴大学校园内的选定土地用途（森林，草地和农田）以及土壤深度对土壤有机质，土壤碳和相关土壤特性的影响。收集土壤深度为0到15、15到30到30和45到45厘米的土壤样品进行有机物，碳和pH分析，以及0到5到5到5到10厘米的土壤深度来测量农田的土壤水和容重，森林和草原土地利用类型。在研究的三种土壤深度中，森林，草地和农田的有机质和碳含量存在显着差异。森林，农田和草地在0至15厘米深度处的有机物含量分别估计为2.27％，2.07％和0.83％。所有土地利用类型减少的有机质含量都随着土地深度的增加而减少。采样时间前5厘米的草地土壤水分别比森林和农田多33.2％和48.53％。农田土壤的土壤容重高于森林，而后者高于草地。不同的土地利用和土壤深度造成了土壤碳储量的变化。森林土壤的pH值明显较低。

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