CAJ | 학술논문

研究长江中下游地区浅水湖泊5种常见大型底栖动物（铜锈环棱螺、河蚬、苏氏尾鳃蚓、摇蚊属幼虫及中国长足摇蚊）碳、氮、磷化学计量特征，样品采集于多个不同营养水平湖泊．底栖动物碳、氮、磷元素含量的变化范围分别为31．6％～60．7％、5．2％～12．1％及0．41％～2．28％，碳氮比、碳磷比和氮磷比的变化范围分别为4．4～8．9、55～314及9．9～40．1，其中磷元素含量变化最大并是导致N∶P变化的主要原因．不同种类底栖动物元素组成具有显著差异，碳、氮、磷最高平均值分别出现在河蚬（48．4％）、苏氏尾鳃蚓（10．4％）及河蚬（1．09％）．铜锈环棱螺（除氮磷比）和河蚬元素组成在不同营养水平湖泊间具有显著差异，重富营养湖泊太湖氮和磷含量最高．相关分析发现铜锈环棱螺及河蚬磷含量和氮磷比与营养状态指数显著相关，表明铜锈环棱螺和河蚬的碳、氮、磷化学计量特征并非保持严格的动态平衡．
연구장강중하유지구천수호박5충상견대형저서동물（동수배릉라、하현、소씨미새인、요문속유충급중국장족요문）탄、담、린화학계량특정，양품채집우다개불동영양수평호박．저서동물탄、담、린원소함량적변화범위분별위31．6％～60．7％、5．2％～12．1％급0．41％～2．28％，탄담비、탄린비화담린비적변화범위분별위4．4～8．9、55～314급9．9～40．1，기중린원소함량변화최대병시도치N∶P변화적주요원인．불동충류저서동물원소조성구유현저차이，탄、담、린최고평균치분별출현재하현（48．4％）、소씨미새인（10．4％）급하현（1．09％）．동수배릉라（제담린비）화하현원소조성재불동영양수평호박간구유현저차이，중부영양호박태호담화린함량최고．상관분석발현동수배릉라급하현린함량화담린비여영양상태지수현저상관，표명동수배릉라화하현적탄、담、린화학계량특정병비보지엄격적동태평형．
C:N:P elemental composition were measured in five macrozoobenthic taxa ( Bellamya aeruginosa, Corbicula fluminea, Branchiura sowerbyi, Chironomus spp.and Tanypus chinensis) from several shallow lakes with contrasting trophic state .The tissue contents of carbon (C), nitrogen (N) and phosphorous (P) ranged from 31.6%–60.7%, 5.2%–12.1%, 0.41%–2.28%, respectively.The ratios of C∶N,C∶P and N∶P ranged from 4.4–8.9, 55–314, 9.9–40.1, respectively.The most variable component was P content and accounted for 63.2% of the variation in N∶P ratio.Elemental composition differed significantly among macrozoobenthic taxa, with C.fluminea showed the highest mean values of C (48.4%) and P (1.09), and B.sowerbyi presented the highest mean values of N (10.4%).Elemental composition of B.aeruginosa (except for N∶P)and C.fluminea dif-fered significantly among contrasting trophic state lakes , with the highest values of N and P were observed in a hypertrophic lake ( Lake Taihu) .P content and N∶P ratio of B.aeruginosa and C.fluminea showed significant correlations with trophic state index (TSI), indicating that these two species deviated from strict homeostasis with respect to C∶N∶P stoichiometry.