土壤2016，Vol.48Issue(4)：680-685,6.DOI:10.13758/j.cnki.tr.2016.04.009
加拿大一枝黄花入侵对杭州湾湿地围垦区土壤养分及活性有机碳组分的影响
Invasion Effects ofSolidago canadensison Soil Nutrients and Active Organic Carbon Components in Reclamation District of Hangzhou Bay Wetland
摘要
Abstract
Solidago canadenis is one of the worst hazardous invasive plantsin China, in order to clarify its influence on the ecological system of invaded land, this experiment tookSolidago canadenis communitiesand three kinds of native plant communities:Phacelurus Griseb communities, Imperata cylindricall communitiesandPhragmites australis communities naturally distributed in the reclamation district of Cixi city of Hangzhou Bay wetland as the research object, studied the invasion effects of Solidago canadensis on soil nitrogen, phosphorus and potassium contents and their available component contents as well as active organic carbon components on wild sample plots.The results showed that the invasion ofSolidago canadenis significantly reduced soil pH value (P<0.05), had no significant influence on contents of soil total nitrogen, total phosphorus, total potassium, available phosphorus and available potassium (P>0.01), but significantly increased the contents of available nitrogen, ammonium nitrogen and nitrate nitrogen (P<0.01), soil available nitrogen content inSolidago canadenis in 0–10 cm soil layerwere 1.7 times, 2.4 times and 2.0 times of Phacelurus Griseb, Imperata cylindricalandPhragmites australis,respectively. The invasion of Solidago canadensis had no significant influence on soil total organic matter content (P>0.01), but changedsoil active organic carbon components. Compared with thePhacelurus Griseb, Imperata cylindricalandPhragmites australis, soil microbial carbon content in 0–10 cm soil layer inSolidago canadenis increased by 196.72%, 180.21% and 41.47%, respectively; soil soluble carbon reduced by 27.27%, 40.78% and 27.27%, respectively, and reduced by 41.36%, 39.49% and 29.63% in 10–20 cm layer, respectively; soil readily oxidized carbon reduced significantly in the two layers (P<0.01). The above results showed that theinvasion of Solidago canadenis could reduce soil pH value, increase the effectiveness of soil nitrogen andchange soil active organic carbon components.关键词
外来植物入侵/加拿大一枝黄花/土壤养分/活性有机碳组分Key words
Exotic plant invasion/Solidago canadenis/Soil nutrients/Active organic carbon components分类
农业科技引用本文复制引用
梁雷,叶小齐,吴明,邵学新,李长明..加拿大一枝黄花入侵对杭州湾湿地围垦区土壤养分及活性有机碳组分的影响[J].土壤,2016,48(4):680-685,6.基金项目
国家自然科学基金项目(31400378)、中国林业科学研究院中央级公益性科研院所基本科研业务费专项资金项目(CAFYBB2014QB034)资助。 （31400378）
