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An Eco-anatomical Study on Picea likiangensis  Leaves at  Different Gradient Elevations in Northwest of Yunnan(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2015年04
Page:
67-70
Research Field:
Publishing date:

Info

Title:
An Eco-anatomical Study on Picea likiangensis  Leaves at  Different Gradient Elevations in Northwest of Yunnan
Author(s):
TANG Tan; JIANG Yong-lei; FENG Cheng-cheng; HUANG Xiao-xia; CHENG Xiao-mao
(College of Landscape Architecture，Southwest Forestry University，Kunming，Yunnan 650224)
Keywords:
Picea likiangensis; leaf eco-anatomy; correlation coefficients; altitude; Northwest of Yunnan
PACS:
-
DOI:
10.11937/bfyy.201504016
Abstract:
Taking natural forest of Picea likiangensis as research object，which grow at different elevations(2 900,3 050,3 200,3 350 m) in Nature Reserve of Yulong Snow Mountain were investigated.Furthermore，the leaf anatomical characteristics of Picea likiangensis were also researched，and the correlation changes and the inner relationship in each index with altitude were studied.The results showed that the leaves cuticle thickness，upper epidermis thickness，phloem thickness，xylem thickness，transfusion tissue thickness，endothelial layer thickness，vascular diameter and leaves length and short diameters were all firstly increased and then declined with the increasing altitude，and reached their maximum at 3 200 m.Besides，the parameters of leaf anatomical characteristics were decreased when the elevation above 3 200 m.Therefore，the optimum zone of Picea likiangensis was nearly at around 3 200 m elevation.In addition，the leaf anatomical indexes of Picea likiangensis leaves’structure were nearly correlated with each other.The growth and distribution of Picea likiangensis were limited by the changes of complex environmental conditions along with the change of altitudes，which resulted in the differences of the leaf anatomical characteristics of Picea likiangensis.On the other hand，it also reflected the co-relationship between the environmental factors and plants’adaptions in a certain degree.

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Last Update: 2015-04-09