The country has seen a dramatic decline in forest cover as a result of land conversion, tree harvesting, and agricultural production to sustain food security. Secondary forests are a significant component of tropical land cover, and their transformation or conversion to another land use is believed to have a detrimental influence on some soil qualities and the forest ecosystem in general. A paired-area/space-for-time substitution approach was used to ascertain changes in carbon storage, including soil organic carbon (SOC) and total above-ground biomass (TAGB), as well as soil nutrient stocks and fertility status, as a result of land use change. The study was conducted in Ormoc City, Leyte, Philippines, in Lake Danao National Park (LDNP). Adjacent to the secondary forest (one kilometer distant), grassland and forest plantation land uses were chosen and sampled for potential changes in SOC, TAGB, and nutrient stocks as a result of landuse change. The results indicated that when forest was converted to grassland and forest plantation, organic carbon, exchangeable aluminum, exchangeable acidity, effectivecation exchange capacity, and TAGB declined, while pH in H2O, exchangeable magnesium, and potentialcation exchange capacity increased. Additionally, when the forest was converted to grassland and forest plantation, accessible P, base saturation, Ca, K, and Na stocks increased while total N and SOC stocks fell. The results of this study reveal that forest conversion to grassland and forest plantation had a significant effect on SOC stocks, TAGB, soil nutrient stocks, and fertility status. Additionally, it demonstrated that changes in soil qualities were highly dependent on land use.