Which abiotic factor causes organic matter to decay more rapidly in deciduous forests than in coniferous forests?

Warm and wet climate

Explanation:

The average temperature during summers in deciduous forest is 70 degree Fahrenheit while  the average temperature during summers in coniferous forest is 50 degree Fahrenheit.

In deciduous forests there are four seasons : winter, summer, autumn , monsoon. Due to such varied climate variation, the deciduous' forest temperature varies between cold to hot wet summers. Wet and hot summer is an advantageous scenario to propagate decay of organic matter.

Due to this climatic variation organic matter decay more rapidly in deciduous forests than in coniferous forests