Preferred term

matter storage

Is replaced by

If the word \\"Matter\\" means “Soil organic matter\\", the definition could be: the storage of Soil Organic Matter (SOM). \\"SOM is a heterogeneus mixture consisting of plant, animal, and microbial materials in all stages of decay combined with a variety of decomposition products of different ages and levels of complexity\\"

http://vocabs.lter-europe.net/EnvThes/EnvEU_216