CAJ | 학술논문

　　为明确外来入侵植物黄顶菊不同生境条件下叶片生态化学计量特征，通过野外取样，研究了3种生境(Ⅰ为水边，Ⅱ为农田，Ⅲ为荒地)黄顶菊叶片养分化学计量特征，同时分析了其叶片与入侵地土壤养分的相关性。结果表明：3种生境黄顶菊入侵地土壤C、N、C：P和N：P 均为Ⅲ>Ⅰ>Ⅱ，P 为Ⅰ>Ⅱ>Ⅲ， C：N为Ⅲ>Ⅱ>Ⅰ(P<0.05)；3种生境黄顶菊叶片C含量无显著性差异，N和P含量为Ⅰ显著高于Ⅱ和Ⅲ， C：N、C：P 和 N：P 则相反(P<0.05)；叶片和土壤在 P、C：N 上均呈显著正相关关系，而 C、C：P、N：P 均相关性不显著；土壤C-N间呈显著正相关，而C-P、N-P间均相关性不显著；叶片N-P间呈显著正相关，而C-N、C-P间均相关性不显著。黄顶菊入侵对土壤有机质和N素的改变是协同进行的。水边黄顶菊生长受N限制，农田和荒地黄顶菊生长受P限制。
　　위명학외래입침식물황정국불동생경조건하협편생태화학계량특정，통과야외취양，연구료3충생경(Ⅰ위수변，Ⅱ위농전，Ⅲ위황지)황정국협편양분화학계량특정，동시분석료기협편여입침지토양양분적상관성。결과표명：3충생경황정국입침지토양C、N、C：P화N：P 균위Ⅲ>Ⅰ>Ⅱ，P 위Ⅰ>Ⅱ>Ⅲ， C：N위Ⅲ>Ⅱ>Ⅰ(P<0.05)；3충생경황정국협편C함량무현저성차이，N화P함량위Ⅰ현저고우Ⅱ화Ⅲ， C：N、C：P 화 N：P 칙상반(P<0.05)；협편화토양재 P、C：N 상균정현저정상관관계，이 C、C：P、N：P 균상관성불현저；토양C-N간정현저정상관，이C-P、N-P간균상관성불현저；협편N-P간정현저정상관，이C-N、C-P간균상관성불현저。황정국입침대토양유궤질화N소적개변시협동진행적。수변황정국생장수N한제，농전화황지황정국생장수P한제。
To clarify the ecological stoichiometry characteristics of alien invasive plant Flaveria bidentis under different habitats (Ⅰwaterside, Ⅱcropland, Ⅲwasteland) were selected to study the nutrient stoichiometric characteristics of F. bidentis leaf, and analysis the relationship of its blade and invaded soil. The results showed that invaded soil C, N, C:P, N:P were Ⅲ>Ⅰ>Ⅱ, PⅠ>Ⅱ>Ⅲ, C:N Ⅲ>Ⅱ>Ⅰin three habitats (P<0.05). The leaf C content had no significant difference,Ⅰsignificantly higher than Ⅱ and Ⅲ in N or P, but Ⅱand Ⅲ were significantly higher than Ⅰ in C:N, C:P, N:P (P<0.05). The soil P or C:N was significantly positive correlation with the leaf, while no significant correlation determined between C, C:P, N:P. The soil C was significantly positive correlation with N, but no significant correlation existed between C-P, N-P. The leaf N content was significantly positive correlation with P, while C-N and C-P were no significant correlation. The change was synchronous between soil organic matter and N after F. bidentis invasion. N was growth restrictive element of F. bidentis in the waterside, while in the cropland or wasteland it was P.