Complex sentence: The tree should be cut down the following fall, and debarked, chipped, burned, or covered in plastic by the next spring to prevent contamination by fungal mats.
Split into simpler sentences: The tree should be cut down the following fall and the bark removed. All should be chipped then burned or thoroughly composed beneath impermeable cover (e.g., plastic sheeting) until the next spring to prevent contamination by fungal mats.