Home > Archive>Volume 23, Issue 2, 2015 >197-204. DOI:10.11926/j.issn.1005-3395.2015.02.012
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Canopy Effects of Three Pioneer Trees on Seedling Growth of Cyclobalanopsis glauca and Lonicera maackii in Rocky Desertification Region of Southwestern Guangxi
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Guangxi Key Laboratory of Karst Plant Conservation and Restoration Ecology,Guangxi Institute of Botany, Chinese Academy Science, Guilin, Guangxi 541006, China

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    Abstract:

    In order to understand the canopy effects of pioneer trees on seedling growth of other speciecs in rocky desertification area of southwestern Guangxi, the survival and growth traits of Cyclobalanopsis glauca and Lonicera maackii under three pioneer tree canopy, such as Delavaya toxocarpa, Leucaena leucocephala and Zenia insignis, were studied by field plot experiment. The results showed that the three pioneer trees could reduce the light intensity and improve soil physical characters, reduced soil bulk density, increased the total porosity and the field capacity, but they could not change soil chemical features. All the three pioneer trees had certain nurse effects on the survival and growth of C. glauca seedlings. Z. insignis and Leucaena leucocephala improved the survival but inhibited the growth of Lonicera maackii seedlings. D. toxocarpa decreased significantly the survival and growth of Lonicera maackii seedlings. Whether they improved or inhibited the seedling growth, the three pioneer trees had more effects on the seedling height and branch growth than those on basal diameter. Therefore, the pioneer trees D. toxocarpa, Leucaena leucocephala and Z. insignis could be selected as the nurse plants for C. glauca seedling in rocky desertification area in southwestern Guangxi, but Lonicera maackii should be planted outside the pioneer tree canopy to avoid shade effect.

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吕仕洪,黄甫昭,曾丹娟,李先琨,徐广平.桂西南石漠化区3种先锋树种对树冠下青冈和金银花幼苗生长的影响[J].热带亚热带植物学报,2015,23(2):197~204

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History
  • Received:May 21,2014
  • Revised:August 28,2014
  • Adopted:November 04,2014
  • Online: April 02,2015
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