云南双柏恐龙河自然保护区滇南苏铁物候监测

Phenological Monitoring of Cycas diannanensisin Shuangbai Konglonghe Nature Reserve of Yunnan Province

对位于云南双柏的恐龙河保护区滇南苏铁设置1块样地、1条样带,开展频率为10 d/次,为期1 a的物候监测,探索滇南苏铁发育过程的周期性规律及周围环境影响。结果发现,保护区内滇南苏铁更新较好,但病虫害发生严重;雄花与雌花花期相差达30 d,雄花先放雌花后放,雌花更不易开放;当地居民花苞采摘食用陋习影响滇南苏铁种群自然更新。认为保护区应持续开展监测,强化保护宣传教育,开展近地保护及种群回归,以提高滇南苏铁的保护有效性。

The phenological monitoring was carried out once every 10 days for one year to explore the periodic law of Cycas diannanensis growth and the impact of the surrounding environment by setting up one sample plot and one transect in Shuangbai Konglonghe Nature Reserve of Yunnan Province.The results showed that the regeneration of Cycas diannanensis was good,but the occurrence of diseases and pests was serious;the difference of flowering period between male flowers and female flowers was up to 30 days,andmale flowers bloomed earlier while female flowers were more difficult to bloom;the bad habit of picking and eating flower buds of local residents affected the natural regeneration of Cycas diannanensis population.This paper considered that the reserve should carry out continuous monitoring,strengthen protection publicity and education,develop near situ conservation and population regression,so as to improve the effectiveness of Cycas diannanensis protection.