冷箭竹开花枯死是恢复大熊猫生境的最佳时期

THE DIEBACK OF BASHANIA FANGIANA AFTER FLOWERING IS THE BEST PERIOD FOR THE RESTORATION OF THE GIANT PANDA′S HABITAT

分布于中山和亚高山针阔叶混交林和针叶林下的大熊猫以竹为食,以森林为隐蔽。竹子无性繁殖力强,若是竹盖度达50％以上,就会抑制乔木层树种幼苗的生长发育。但竹子周期性开花枯死后,从种子萌发到幼苗生长成林需要10年以上的时间,这是恢复大熊猫生境的林木更新的最佳时期。因此可在大熊猫分布区被皆伐后的迹地上营造竹树混交林;在择伐后的林区种植被择伐后的树种,恢复森林的群落结构,提高竹子幼苗的成活率,创造适宜大熊猫生存发展的生态环境,是保护大熊猫的重要措施。

Giant pandas in middle and second high hill′s theropencedrymion or aciculisilvae take food from bamboo and get shelter from forests. Bamboos are remarkaly capable of vegetative propagation and restrain the growth of tree seedlings with a bamboo′s cover ratio of over 50％.But with the dieback of bamboo after the periodic flowering, it takes over ten years from the seed germination to seedling growth into dense forest. This period is the most favourable time for the restoration of the giant panda′s habitat through reforestation. So in giant panda′s distributive areas it is highly advisable to plant forests of mixed trees and bamboos on clear -cut slashes, and to plant the same kind of trees that once were in the area but now cut to restore the forest community structure, raise the survival rate of bamboo seedlings, and creatd a favourable environment for the growth of the giant panda. All mentioned above is an imortant maasure to protect giant pandas.