How do land use practices (particularly in forests and agriculture) affect and are affected by the carbon cycle, according to the lecture?单项选择题

The primary effect of converting forests to farmland is a change in local water and nutrient cycles, with little direct influence on global carbon storage because soil carbon levels are assumed to remain constant

Forests serve as major carbon sinks by absorbing CO₂ through photosynthesis, and converting forests to agricultural lands releases carbon stored in trees and soils

Land use changes mainly affect biodiversity and water dynamics, with the impact on carbon storage considered secondary and negligible compared to the dominant role of oceanic carbon absorption

Although forests and agricultural lands both store carbon, the carbon released during deforestation is largely offset by enhanced crop growth, suggesting a minimal net impact on the carbon cycle