'Indigenous Knowledge and Resource Management System' can at best be considered as:

Indigenous knowledge and resource management help communities adjust their practices to changing conditions, so it is best seen as an adaptation response.

Mitigation aims to cut the sources of greenhouse gases, which is not the core role of traditional resource use.

Decarbonization means removing carbon from energy systems, a technological rather than a customary practice.

An ethical response concerns moral duties and values, not the practical coping captured here.

Adaptation reduces vulnerability by adjusting livelihoods, farming and water use to local climate risks.

Time-tested community practices often carry low-cost, locally suited ways of coping with climate stress.