Safekeeping of satin cover on ground (12)
I believe the answer is:
conservation
'safekeeping' is the definition.
(thesaurus)
'satin cover on ground' is the wordplay.
'ground' indicates an anagram ('grind' the letters into a new form).
'satin'+'cover'+'on'='satincoveron'
'satincoveron' with letters rearranged gives 'CONSERVATION'.
'of' acts as a link.
(Other definitions for conservation that I've seen before include "Careful management of the environment" , "good husbandry" , "Care and maintenance of the environment" , "management of natural resources" , "Preservation (of wildlife)" .)