文献类型：期刊文献

英文题名：The influence of light conditions and interspecific competition on the root foraging traits and seedling growth of two tree species

作者：Zhang, Yi[1] Ma, Xuehong[1] Zhou, Zhichun[1]

第一作者：张莹

通信作者：Zhou, ZC[1]

机构：[1]Chinese Acad Forestry, Res Inst Subtrop Forestry, Fuyang, Zhejiang, Peoples R China

年份：2012

卷号：146

期号：1

起止页码：7-14

外文期刊名：PLANT BIOSYSTEMS

收录：;Scopus(收录号：2-s2.0-84859623404);WOS:【SCI-EXPANDED(收录号:WOS:000303354200002)】；

基金：The authors are grateful to the editor and two anonymous reviewers for helpful comments on an earlier version of this manuscript. They also thank the members of the Forest Breeding Group of the Research Institute of Subtropical Forestry for discussion, encouragement, and assistance with the pot measurements. This research was supported by grants from the National Natural Science Foundation of China (Project 31070599) and from the Zhejiang Provincial Natural Science Foundation of China (Project Y3090464).

语种：英文

外文关键词：P. massoniana; S. superba; root foraging; morphological plasticity; interspecific competition

摘要：Enriched nutrient patches within natural soil represent an important source of nutrients for tree growth. In the present study, pot experiments in a heterogeneous nutrient environment were conducted to investigate the influence of light conditions and interspecific competition on the root foraging traits and seedling growth of Pinus massoniana and Schima superba. The root foraging scale and the whole-seedling biomass of both species were decreased by shading. The result of this treatment was a lower sensitivity to nutrient heterogeneity in plants that underwent the shading treatment than in plants that were exposed to full-light conditions. The above-ground biomass and whole-seedling biomass of S. superba were not affected by competition with P. massoniana. In contrast, the above-ground biomass and whole-seedling biomass of P. massoniana were negatively affected by competition with S. superba. The more rapid rate of root extension and the more efficient resource uptake of S. superba appear to explain this effect. The species-specific patterns of the influence of environmental factors on foraging ability and seedling growth should be given thorough consideration and should be applied to afforestation and to the management of tree plantations.