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›› 2005, Vol. 22 ›› Issue (5): 596-603.DOI: 10.7523/j.issn.2095-6134.2005.5.010

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Impact of Cone-Picking on Seed Banks and Animals

LIU Zu-Gen1,2, JI Lan-Zhu1, ZHU Jiao-Jun1   

  1. 1. Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China;
    2. Graduate School of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2004-09-09 Revised:2004-10-22 Online:2005-09-15

Abstract:

In the Changbai Mountain Natural Reserve, there were more than 250 terrestrial vertebrate species, accounting for over 69 %of animals in Changbai Mountain.Many of them were rare and endangered species.Every year there are Korean pine trees that can produce fruit cones in original Korean pine forests, providing a lot of food for animals,which depend on cones very much.However, because of continuously commercial cone-picking, these cones on Korean pine trees sharply became fewer in number in a short time and most of them were dropped during cone-picking.The density of Korean pine seeds on the floor was 1582 ~ 2640 hm-which accounted for 0.3 %~ 0.5 % of that in the 1970s.Furthermore, over 67.8 %of those seeds were rotten in Korean pine forests.As a result, they would badly affect natural regeneration of Korean pines and the food source of animals.Therefore, the impacts of cone-picking on animals were discussed according to the principle of food chains and the relationships between animals and habitats.The result indicated that, on the one hand,Korean pine could not regenerate naturally without animals' help,which affected the normal succession of Korean pine forests thus destroying habitats.On the other hand, animals' number would change because of lack of Korean pine seeds in Korean pine forests, which would destroy food chains there so that distribution of animals will alter in Korean pine forests of Changbai Mountain Natural Reserve.

Key words: Changbai Mountain Nature Reserve, cone-picking, seed bank, distribution of animals, food chains

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