The well-defined succession of natural horizons with a distinct O horizon or organic layer is the unique feature of the forest soils. Unlike agricultural soils, vegetation is present continuously with minimal disturbance in a forested landscape. The top layer of soil, called the O horizon, is split into three parts or strata: 1. Litter layer (L-layer), 2. Fragmented layer (F-layer), and 3. Humus layer (H-layer). The litter layer comprises the remnants of deceased flora and fauna. The fully decomposed organic substance is referred to as humus. The “H” layer is frequently overlooked due to its easily crumbled texture and significant mineral content. Humus is categorized into mor humus, mull humus, and duff mull humus based on its morphological attributes. The forest soils have better soil texture, soil structure, increased porosity, lower bulk density, good aeration, reduced soil temperature, and better water retention capacity. Coniferous forests exhibit lower soil pH levels compared to deciduous forests. A soil having a cation exchange capacity (CEC) value of more than 10 meq/100 g is regarded as high CEC, typically forest soils. The soil’s biological processes include activities such as litter decomposition, fine root decomposition, mycorrhizal networks, nitrogen fixation, contributing to nutrient cycling. In the field of forestry, the term used to indirectly refer to soil quality is site index (SI), which represents the average height of trees at a specific age. SI is widely utilized and valuable due to the direct correlation between height growth and volume growth, as well as the fact that height growth is not dependent on stocking. Fire negatively affects soil structure, reducing soil organic matter, porosity, and increasing pH levels. On the other hand, decomposition positively impacts soil organic matter, mineralization, and nutrient cycling. Climate change directly impacts soil quality and fertility, while also indirectly affecting forest soils through increased pest and disease incidence, as well as heightened fire occurrences that result in reduced carbon sequestration and forest degradation. Forestry and agroforestry play a crucial role in utilizing trees for productive purposes and ecological rehabilitation due to their ability to thrive in challenging climates and soil conditions. For reclaiming saline and alkali soils, trees species like Acacia auriculiformis, Azadirachta indica, Ailanthus excels, Casuarina equisetifolia, Prosopis cineraria, Acacia tortilis, Dalbergia sissoo, and Acacia nilotica are the ideal ones.