关键词: 常绿阔叶林, 木质残体, 干扰, 冰雪灾害

Abstract:

The storage and decay of woody debris (WD) in a evergreen broad-leaved forest were investigated by using sampling plot harvesting method after it was interfered by the serious frozen disaster in the early 2008 in the Daming mountain nature reserve. The results showed that the total storage of woody debris was 37.249 t·hm^-2, among which the storage of coarse woody debris (CWD) and fine woody debris (FWD)was composed 33.143 and 4.106 t·hm^-2, respectively, accounting for 88.98% and 11.02% of total WD storage. Logs and branches were the main contributors to the total WD storage in the forest, occupied 61.6% and 34.6%, respectively. The storage of each decay class was ranked as follows: class 2 (69.22%)>class 4(13.62%)>class 3(12.98%)>class 5(3.96%)>class 1(0.22%). The frozen disaster had enormous effects on the input of woody debris of the evergreen broad-leaved forest in the Daming mountain, and the storage of the decay class 2 reached to 25.784 t·hm^-2.

Key words: evergreen broad-leaved forests, woody debris, interference, frozen disaster