|本期目录/Table of Contents|

[1]王九中,董必成,罗芳丽.土壤异质性对香菇草生长和竞争关系的影响[J].江苏农业科学,2014,42(06):302-306.
 Wang Jiuzhong,et al.Effects of soil heterogeneity on growth and competition of Hydrocotyle vulgaris[J].Jiangsu Agricultural Sciences,2014,42(06):302-306.
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土壤异质性对香菇草生长和竞争关系的影响(PDF)
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《江苏农业科学》[ISSN:1002-1302/CN:32-1214/S]

卷:
第42卷
期数:
2014年06期
页码:
302-306
栏目:
资源与环境
出版日期:
2014-06-25

文章信息/Info

Title:
Effects of soil heterogeneity on growth and competition of Hydrocotyle vulgaris
作者:
王九中1 董必成2 罗芳丽2
1.北京林业大学林学院,北京 100083;2.北京林业大学自然保护区学院,北京100083
Author(s):
Wang Jiuzhonget al
关键词:
克隆生长觅食行为香菇草种内竞争斑块对比度土壤异质性
Keywords:
-
分类号:
S646.1+20.1
DOI:
-
文献标志码:
A
摘要:
已有研究表明土壤养分异质性能显著影响植物的生长,但其对植物种内竞争的影响却很少被研究。本研究将1棵(无种内竞争)或者9棵(有种内竞争)香菇草(Hydrocotyle vulgaris)分株分别种植在土壤养分同质环境或者2个不同养分对比度的异质环境中(养分高对比度的斑块和养分低对比度的斑块)。研究结果表明,在异质环境中,香菇草能够在高养分斑块中放置更多的根;但是,只有生长在高对比度处理中的香菇草才能在高养分斑块产生更多的生物量和分株。这种对异质环境的响应策略将抑制香菇草个体的生长,但是不会改变香菇草的种内竞争强度。试验结果表明,对于生长在异质性环境中的植物而言,分株和根的选择性放置可能不是一直有效的策略。当植物对养分表现出相似的吸收能力时,植物的种内竞争强度可能也不完全取决于土壤养分的异质性分布。
Abstract:
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备注/Memo

备注/Memo:
收稿日期:2014-03-13
基金项目:国家自然科学基金(编号:31200314);高等学校博士学科点专项科研基金新教师类资助课题(编号:20120014120001)。
作者简介:王九中(1967—),男,博士研究生,主要从事克隆植物生态学的研究。E-mail:185777810@qq.com。
通信作者:罗芳丽,博士,讲师,主要从事湿地植物生理生态学的研究。E-mail:ecoluofangli@163.com。
更新日期/Last Update: 2014-06-25