Coarse woody debris in a Pinus massoniana forest in the hilly area of Central Hunan Province
The characteristics of storage,species composition,DBH class and decay class of coarse woody debris (CWD)were studied in a Pinus massoniana forest in the hilly area,Central Hunan Province.The results showed the av-erage storage of CWD was 1.72t/hm2 ,the conifer tree specie of CWD were Pinus massonianaand Cunninghamia lanceo-lata,the broad-leaved tree specie of CWD were Cinnamomum camphora、Choerospondias axillarisand Chinese sweet gum.The storage of the area of mixed of P.massonianaand broad-leaved tree species significantlly bigger than the area of mixed of P.massonianaand C.lanceolata,showed with the increase of forest biomass has a growth trend.The density of CWDs decreased as increase of DBH class,and followed the inverse J-shape,the ratio showed log >snag >branch >stump.The CWD had all classes (class I to V)with a focus of decay classⅠandⅡ,the decay class of CWDs decreased with increase of DBH class.
Pinus massoniana forestcoarse woody debrischaracter of storageDBH (diameter at breast height) classdecay class