文献类型：期刊文献

英文题名：Significance of stump-sprouting for the population size structure and spatial distribution patterns of endangered species, Magnolia cylindrica

作者：Li, Jing[1,2] Wu, Yuhuan[3] Wu, Tonggui[4] Cao, Lin[1,2] Chen, Jianhua[1,2] Qiu, Zhijun[1] Zhang, Yi[5] Xu, Gendi[1] Zhang, Jiayin[6] Liu, Peng[1,2]

第一作者：Li, Jing

通信作者：Liu, P[1];Liu, P[2]

机构：[1]Zhejiang Normal Univ, Biol Sci Lab, Jinhua 321004, Peoples R China;[2]Zhejiang Normal Univ, Grad Sch Ecol, Jinhua 321004, Peoples R China;[3]Hangzhou Normal Univ, Coll Life & Environm Sci, Hangzhou 310036, Zhejiang, Peoples R China;[4]Chinese Acad Forestry, Res Inst Subtrop Forestry, Hangzhou 311400, Zhejiang, Peoples R China;[5]Tourism Coll Zhejiang, Hangzhou 311231, Zhejiang, Peoples R China;[6]Adm Bur Jiulongshan Nat Reserve, Suichang 323300, Peoples R China

年份：2017

卷号：65

期号：2

起止页码：247-257

外文期刊名：POLISH JOURNAL OF ECOLOGY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000405649000007)】；

基金：We would like to thank the Administration Bureaus of Jiulongshan National Nature Reserves for their field assistance. This work was supported by the National Natural Science Foundation of China (Project: 41541049, 31570583) and Zhejiang Provincial Natural Science Foundation (Project: Y307408, Y5090339, Y5100390).

语种：英文

外文关键词：Magnolia cylindrica; population structure; stump-sprouts; seedlings; spatial distribution pattern

摘要：Magnolia cylindrica Wils. is one of the third most-protected wild plants in China. To describe the size structure and dynamics of its population, field data were obtained from eight newly established sites, using a contiguous grid quadrate method in jiulong Mountain of East China. The population size structure and spatial distribution pattern were discussed based on a theoretical distribution model and assembling intensity index. The population size structure showed a declining trend because of the lack of seedlings. The number of stump-sprouting, size class III (sapling trees) individuals was large enough to make up for the shortage of small seedlings and the complete regeneration of populations through sprouting. The distributions of M. cylindrica, both seedling populations (Group A) and overall populations (Group B), were mostly clumped. The spatial pattern intensities of the populations at different stages (mainly small trees, middle trees, and big trees) were higher for Group A than those for Group B. The two groups have the same tendency in that the pattern intensity declined from small trees to the larger ones. Group A and Group B differed in spatial pattern: small and middle trees were randomly distributed in seedling populations, but aggregated in overall populations. The populations of M. cylindrica (both group A and B) were characterized by the pattern scale between 16 to 32 m(2), measured by Greig-Smith and Kershaw methods. These results suggest that sprouting should be seriously considered in population rehabilitation and forest tending management and the area of forest tending management should be close to the maximum intensity.