Conyza sumatrensis is an exotic species in China, and it has affected the biodiversity, composition, structure and stability of native communities. The interspecific association of 12 primary species in native community invaded by C. sumatrensis and its’ stability were analyzed by Variance ratio, χ2 test and Jaccard index based on 2×2 contingency table and improved Godron M.’s measure, in the area of Shangrao City. The results showed that: (1) The whole native community not invaded by C. sumatrensis appears positive association. There are lots of positive association species-pairs, and also exist highly significant positive association species-pairs in the community. (2) The whole native community invaded by C. sumatrensis appears negative association, and significant negative association species-pairs appear in the community. The number of positive association species-pairs reduces sharply compared with before this, and lots of significant positive association species-pairs disappear. The competition of species increases in the invaded native community, and some species can not exist stably in disadvantage niche because of their weak competition. (3) Some species with close relation in local community are divided into two different ecological groups after C. sumatrensis invaded. (4) The stability of the native community reduces because of C. sumatrensis’s attack, 16 species in native community disappear gradually and 4 new species appear.
GUO Lian-Jin
. Impacts to the Interspecies Association and Stability of Native Community Invaded by an Exotic Plant Conyza sumatrensis[J]. Subtropical Plant Science, 2011
, 40(02)
: 18
-23
.
DOI: 10.3969/j.issn.1009-7791.2011.02.006
[1] Callaway R M, et al. What have exotic plant invasions taught us over the past 20 years[J]. Trends Ecol Evol., 2006,21: 369-374.
[2] Pimentel D, et al. Environmental and economic costs of nonindigenous species in the United State[J]. BioScience, 2000, 50(1): 53-65.
[3] 李博,等. 生物入侵生态学: 成就与挑战[J]. 世界科技研究与发展, 2002,24(2): 26-36.
[4] 郭连金,等. 空心莲子草入侵对乡土植物群落种间联结性及稳定性的影响[J]. 中国生态农业学报, 2009,17(5): 851-856.
[5] 王岑,等. 三峡库区苏门白酒草(Conyza sumatrensis)化感作用与入侵性研究[J]. 武汉植物学研究, 2010,28(1): 90-98.
[6] 欧祖兰,等. 元宝山冷杉群落主要树木种群间联结关系的研究[J]. 生态学杂志, 2002,21(1): 14-18.
[7] 王国梁,等. 黄土沟壑区铁杆蒿群落种间联结性研究[J]. 中国草地, 2002,24(3): 1-6.
[8] 李建民,等. 光皮桦天然林群落优势种群的种间联结性研究[J]. 应用生态学报, 2001,12(2): 167-170.
[9] 李伟,等. 湖北斧头湖湖滨湿地植物的联结与相关分析[J]. 武汉植物学研究, 1995,13(1): 65-69.
[10] 朱圣潮. 中华水韭松阳居群的群落结构与种间联结性研究[J]. 生物多样性, 2006,14(3): 258-264.
[11] 刘金福,等. 天然格氏栲乔木层种群间关联性研究[J]. 林业科学, 2001,37(4): 117-123.
[12] 史作民,等. 宝天曼落叶阔叶林种间联结性研究[J]. 林业科学, 2001,37(2): 29-35.
[13] Godron M. Some aspects of heterogeneity in grasslands of Cantal[J]. Statistical Ecology, 1972,3: 397-415.
[14] 郑元润. 森林群落稳定性研究方法初探[J]. 林业科学, 2000,36(5): 38-32.
[15] 尚玉昌. 普通生态学(2版) [M]. 北京: 北京大学出版社, 2002: 156-163.
[16] Greig-Smith P. Quantitative Plant Ecology(3rd ed.)[M]. Oxford: Blackwell Scientific Publications, 1983: 105-112.
[17] Mueller-Dombois D, et al.植被生态学的目的和方法(鲍显诚等译)[M]. 北京: 科学出版社, 1986: 206-215.
[18] 刘洋,等. 青海巴滩地区紫花针茅草原群落种间联结研究[J]. 草业科学, 2007,24(2): 1-4.
[19] 彭少麟,等. 植物外来种入侵及其对生态系统的影响[J]. 生态学报, 1999,19(4): 560-568.
[20] Ding J, et al. China’s booming economy is sparking and accelerating biological invasions[J]. Bio Science, 2008,58: 317-324.
