There is insufficient information on the impact of soil and forest type on the chemical properties of soil, soil organic matter and humus form.

The gap

Consensus across the literature

Supporting evidence — 7 representative gaps

• Litter Inputs Promoted Soil Organic Carbon Formation by Increasing Particulate Organic Carbon on the Eastern Edge of the Tibetan Plateau (2026) · doi

  Forest soil organic carbon (SOC) accumulation is regulated by plant-derived carbon inputs and soil environmental conditions, but the relative roles of litter composition and soil physicochemical properties in regulating SOC fractions remain unclear in high-elevation forest ecosystems.

  Keywords: soil forest carbon organic accumulation regulated plant derived inputs environmental conditions relative roles litter composition
• Soil Organic Carbon Stabilization in the Three Subtropical Forests: Importance of Clay and Metal Oxides (2019) · doi

  Abstract Field observations show that subtropical forests can accumulate soil organic carbon (SOC) at high rate; however, the key mechanisms of SOC accumulation in subtropical forests remain unclear.

  Keywords: subtropical forests abstract field observations show accumulate soil organic carbon high rate mechanisms accumulation remain
• Depth Wise Assessment of Soil Chemical Indicators under different land uses in District Pulwama of Kashmir valley (2026) · doi

  Further extension and conversion of natural forests into agriculture and its long-term impacts on soil carbon storage and chemical properties need to be studied.

  Keywords: further extension conversion natural forests agriculture long term impacts soil carbon storage chemical properties need
• SOILS PROPERTIES AND CARBON CONTENT AT RESEARCH OBJECTS IN FIR-BEECH FORESTS ON CALCAREOUS BEDROCKS OF THE DINARIC MOUNTAIN CHAIN: A CASE STUDY FROM SLOVENIA AND BOSNIA (2016) · doi

  Very little is known about the long-term effects of forest management and intensity of logging on soil organic matter quality and carbon stocks in these forest soils.

  Keywords: forest little known long term effects management intensity logging soil organic matter quality carbon stocks
• Dynamics of biomass and carbon sequestration across a chronosequence of masson pine plantations (2017) · doi

  Abstract The changes of forest biomass stock and carbon (C) sequestration with stand ages at fixed intervals in the different vegetation components remain unknown.

  Keywords: abstract changes forest biomass stock carbon sequestration stand ages fixed intervals different vegetation components remain
• Humus forms, carbon stock and properties of soil organic matter in forests formed on dry mineral soils in Latvia; pp. 63–75 (2020) · doi

  There is insufficient information on the impact of soil and forest type on the chemical properties of soil, soil organic matter and humus form.

  Keywords: soil there insufficient information impact forest type chemical properties organic matter humus form
• Chronic canopy decline alters root exudation patterns and rhizosphere chemistry in Fagus sylvatica (2026) · doi

  Abstract Aims Root exudates mediate carbon (C) and nutrient exchange between plants and soil microorganisms, yet their responses to chronic tree decline remain poorly understood.

  Keywords: abstract aims root exudates mediate carbon nutrient exchange plants soil microorganisms responses chronic tree decline