Forest regeneration utilizing mulching sheet and mycorrhizal fungi

Creators Ezaki Tsugio

Creators Marumoto Takuya

Creators Hayakawa Seiji

Creators Okabe Hiroaki

Creators Yamamoto Kazuo

Creators Chun Kun-Woo

In order to investigate the possibility of utilizing a combination of a mulching sheet (MS) composed of Polyester random fiber web as the main material and mycorrhizal fungi (MF), effects of their utilization were surveyed for 2-4 years on the growth of Pinus thunbergii Parl. And P. densiflora Sieb. et Zucc. at model and actual slopes. At plots where spores of Pisolithus tinctorius Coker et Couch f. tinctorius(Pt) were dispersed as MF and MS were applied after P. densiflora was seeded, the stem diameter at ground level and planting stock height showed greater values from the first year, compared with those at control plots. The growth at the experimental site belonging to Ehime University where seeds of P. densiflora were incorporated into the MS showed greater values of stem diameter at ground level and planting stock height from the first year, compared with those at control plots. MS were stuck at the site where 4 years had elapsed after P. thunbergii was planted at Mt. Tanakami in Ohtsu, Shiga. An increase of 66-494% was shown in the stem diameter at ground level and tree height of P. thunbergii, compared with those of control plots during 4 years. At the Nojiri River experimental site on Sakurajima Island in Kagoshima where P. thunbergii of a two year-old planting stock was planted after MS were stuck, P. thunbergii showed a strong tolerance against sulfurous acid gas (SO2 gas). From these findings, it was estimated that MS and MF were effective for the regeneration of forests devastated by various causes.

[ISSN]0021-8588

[NCID]AN00200732