常绿落叶阔叶混交林恢复过程中林分生长动态

Growth Dynamic of Montane Mixed Evergreen and Deciduous Broadleaved Forest during Different Restoration Process

以鄂西南木林子自然保护区山地常绿落叶阔叶混交林不同恢复时期群落为对象,研究了常绿落叶阔叶混交林恢复过程中林分生长动态。结果表明:随着群落的恢复,林分蓄积量随着群落的恢复不断增加,当恢复到60a时,林分中落叶阔叶用材树种蓄积量最高。生物量随着群落的恢复逐渐增加,但恢复过程中生物量的发展速率不是均匀的,在群落恢复前期发展较快,在后期则发展较慢。

The community of mixed evergreen and deciduous broadleaved forest on different recovery period stages in Mulinzi nature reserve mountane land of Southwestern Hubei was regarded as the research objects; the authors researched the growth dynamic of mixed evergreen and deciduous broadleaved forest during dif- ferent restoration period. The result showed that with the restoration of community, the stand volume increased continually. When the restoration reached sixty years old, the volume of deciduous broadleaved timber trees is the largest in the stand. The biomass increases continually with the recovery of community, but the development rate isn＇t uniform in the recovery process, the development is fast in the earlier stage, while it is slow later.