喜旱莲子草对不同生境植物群落多样性的影响

草业学报 ›› 2010, Vol. 19 ›› Issue (4): 10-15.

喜旱莲子草对不同生境植物群落多样性的影响

张震^1*,徐丽²,朱晓敏¹

1.安徽农业大学资源与环境学院,安徽合肥 230036;
2.安徽农业大学植物保护学院,安徽合肥 230036

收稿日期:2009-09-10 出版日期:2010-08-20 发布日期:2010-08-20
作者简介:张震(1976-),男,山东肥城人,副教授,博士。
基金资助:
2009年度安徽省高等学校优秀青年人才基金(2009SQRZ039)和安徽农业大学2009年青年科学基金重点项目(2009zd06)资助。

Effect on species diversity of plant communities caused by invasion of Alternanthera philoxeroides in different habitats

ZHANG Zhen¹, XU Li², ZHU Xiao-min¹

1.College of Resources and Environment, Anhui Agricultural University, Hefei 230036, China;

2.College of Plant Protection, Anhui Agricultural University, Hefei 230036, China

Received:2009-09-10 Online:2010-08-20 Published:2010-08-20

摘要/Abstract

摘要： 为了测定外来入侵植物——喜旱莲子草对其他物种的影响,采用样方法对喜旱莲子草的不同生境内植物群落进行了调查,测定了其伴生植物的种类、数量和盖度,检测了喜旱莲子草的植株茎长、分枝数、叶长、叶宽、节间距等形态指标,分析了该入侵植物在不同生境中的重要值和群落多样性。结果表明,1)在湿生环境中,喜旱莲子草的生长状态较好,植株的茎长、叶面积和节间距等均与其他生境中的植株呈显著性差异;但是,在人为干扰较强生境中(农田、路边)的植株叶面积和节间距明显较其他生境中的相应指标减小或者缩短。2)当喜旱莲子草的重要值超过一定值(60.96%)时,群落内植物的多样性指数呈下降趋势,表明喜旱莲子草的入侵影响了群落内植物种类的丰富度,即当该入侵植物形成一定的优势时,将导致群落内其他物种的减少甚至消失。

Abstract: Alternanthera philoxeroides is one of the most notorious invasive weeds and has been introduced to regions with warm to subtropical humid climates worldwide. To ascertain the effect of the invasive species on plant communities in different habitats, field surveys of species diversity of plant communities and morphological traits associated with the host plant were investigated. 1) The species had good growth in wetlands where the morphological traits (including stem length, leaf area and node length) of A. philoxeroides, showed a significant difference from that in other habitats (namely, road sides, cultivated land and lawn). However, there were significant differences in leaf area and node length between the disturbed habitats (road sides and cultivated land) and other habitats. The two morphological characteristics were related to adaption of the host plants to human activities and heat-drought stresses. 2) Based on the sample plot survey, the variation in relative coverage, frequency and densities, showed a certain pattern in the different invaded habitats. As the important value of the species was over 60.96%, plant species diversity was reduced in communities severely invaded by A. philoxeroides. The alien invasion plant could have huge impacts on native plant communities, and management supervision should be strengthened and managed through target-oriented procedures.

中图分类号:

张震,徐丽,朱晓敏. 喜旱莲子草对不同生境植物群落多样性的影响[J]. 草业学报, 2010, 19(4): 10-15.

ZHANG Zhen, XU Li, ZHU Xiao-min. Effect on species diversity of plant communities caused by invasion of Alternanthera philoxeroides in different habitats[J]. Acta Prataculturae Sinica, 2010, 19(4): 10-15.

参考文献

[1] Loewenstein N J, Loewenstein E F.Non-native plants in the understory of riparian forest across a land use gradient in the Southeast[J].Urban Ecosystem, 2005, 8: 79-91.
[2] 郭连金, 徐为红, 孙海玲, 等. 空心莲子草入侵对乡土植物群落组成及植物多样性的影响[J]. 草业科学, 2009, 26(7): 137-142.
[3] 孙娟, 杨国锋, 陈玉成, 等. 金佛山自然保护区外来入侵植物种及其分布情况[J]. 草业学报, 2009, 18(3): 34-42.
[4] 贺握权, 黄忠良. 外来植物种对鼎湖山自然保护区的入侵及其影响[J]. 广东林业科技, 2004, 20(3): 42-45.
[5] 陈立立, 余岩, 何兴金. 喜旱莲子草在中国的入侵和扩散动态及其潜在分布区预测[J]. 生物多样性, 2008, 16(6): 578-585.
[6] 潘晓云, 耿宇鹏, Alejandro S, 等. 入侵植物喜旱莲子草——生物学、生态学及管理[J]. 植物分类学报, 2007, 45(6): 884-900.
[7] 林金成, 强胜, 吴海荣. 外来入侵杂草空心莲子草对植物生物多样性的影响[J]. 农村生态环境, 2005, 21(2): 28-32.
[8] 翁伯琦, 林嵩, 王义祥. 空心莲子草在我国的适应性及入侵机制[J]. 生态学报, 2006, 26(7): 2373-2381.
[9] 许凯扬, 叶万辉, 李静, 等. 入侵种喜旱莲子草对土壤养分的表型可塑性反应[J]. 生态环境, 2005, 14(5): 723-726.
[10] 周国庆, 彭友林, 王云, 等. 洞庭湖区喜旱莲子草的分布·发生与危害[J]. 安徽农业科学, 2007, 35(22): 6892-6894.
[11] 李昌新, 赵锋, 芮雯奕, 等. 长期秸秆还田和有机肥施用对双季稻田冬春季杂草群落的影响[J]. 草业学报, 2009, 18(3): 142-147.
[12] 左万庆, 王玉辉, 王风玉, 等. 围栏封育措施对退化羊草草原植物群落特征影响研究[J]. 草业学报, 2009, 18(3): 12-19.
[13] 孙儒泳, 李庆芬, 牛翠娟, 等. 基础生态学[M]. 北京: 高等教育出版社, 2002: 143-144.
[14] 潘晓云, 梁汉钊, Alejandro S, 等. 喜旱莲子草茎叶解剖结构从原产地到入侵地的变异式样[J]. 生物多样性, 2006, 14(3): 232-240.
[15] 陶勇,陈少风,江明喜. 空心莲子草对水分变化的形态适应研究[J]. 长江流域资源与环境, 2004, 13(5): 454-459.
[16] 淮虎银, 金银根, 张彪, 等. 外来植物空心莲子草分布的生境多样性及其特征[J]. 杂草科学, 2003, (1): 18-20.
[17] 贾昕, 杨兴中, 潘晓云, 等. 喜旱莲子草营养繁殖特征对干扰的响应[J]. 生物多样性, 2008, 16(3): 229-235.
[18] 郭素枝, 张育松, 马庆奎, 等. 不同生境的绞股蓝营养器官解剖特征及品质分析[J]. 热带作物学报, 2008, 29(4): 472-477.
[19] 王育鹏, 徐丽, 张震. 合肥市不同生境喜旱莲子草的分布和发生[J]. 安徽农业科学, 2009, 37(6): 2800-2802.
[20] Callaway R M, Aschehoug T E. Invasive plants versus their new and old neighbors: A mechanism for exotic invasion[J]. Science, 2000, 290(20): 521-523.
[21] 张震, 徐丽, 马艳婷, 等. 喜旱莲子草组织水浸液对黑麦草种子和幼苗的化感效应[J]. 西北植物学报, 2009, 29(1): 148-153.
[22] 林嵩, 翁伯琦. 外来植物化感作用研究综述[J]. 福建农业学报, 2005, 20(3): 202-210.
[23] 杨期和, 叶万辉, 邓雄, 等. 我国外来植物入侵的特点及入侵的危害[J]. 生态科学, 2002, 21(3): 269-274.
[24] 刘爱荣, 张远兵, 张雪梅, 等. 空心莲子草水浸液对黑麦草和高羊茅种子发芽和幼苗生长的影响[J]. 草业学报, 2007, 16(5): 96-101.
[25] 郑丽, 冯玉龙. 紫茎泽兰叶片化感作用对10种草本植物种子萌发和幼苗生长的影响[J]. 生态学报, 2005, 25(10): 2782-2787