中文摘要：

生态化学计量学理论认为,有机体元素及其比值不仅决定了有机体的关键特征,也决定了有机体对资源数量和种类的需求。本文对艾比湖湿地自然保护区内20种植物光合器官的碳、氮和磷的化学计量特征进行了分析。结果表明：植物光合器官碳、氮和磷含量分别为209.48~728.18（均值428.60±99.05）、11.23~42.57（均值20.52±5.78）和0.39~3.50（均值0.93±0.41）mg·g-1;C∶N、C∶P和N∶P分别为22.74±8.88、512.93±186.53、25.64±16.74;从生活型来看,灌木和草本植物对C的存储能力极显著低于乔木（P〈0.01）,乔木和草本植物的N含量极显著低于灌木（P〈0.01）;3种生活型植物的P含量无显著差异;从功能型来看,研究区植物叶片与同化枝的C、N、P、C∶N、C∶P、N∶P均无显著差异;与全球和中国尺度的研究相比,艾比湖湿地自然保护区植物叶片P含量明显偏低,N∶P、C∶P明显偏高,N∶P〉16,说明艾比湖湿地自然保护区植物在受N、P共同作用的同时更易受P的限制。

英文摘要：

Ecological stoichiometry theory states that the elements and their ratios in organisms not only determine the key features of the organisms, but also determine the resource amounts and types that organisms demand. In this paper, photosynthetic organs of 20 plant species were selected in Ebinur Lake Wetland Nature Reserve, and their characteristics of carbon, nitrogen and phosphorus stoichiometry were analyzed. The results showed that C, N, and P concentrations in photosynthetic organs ranged from 209.48 to 728.18 mg · g-1（with an average of 429.60± 99.05） mg· g-1, 11.23 to 42.57 mg· g-1（with an average of 20.52±5.78） mg ·g-1, and 0.39 to 3.50 mg · g-1（with an average of 0.93±0.42） mg · g-1, respectively. The C ： N, C ： P and N ： P ratios were 22.74±8.88, 512.93±186.53, 25.64±16.74, respectively. From the point of view of plant life forms, shrubs and herbaceous plants had a lower storage capacity for C than trees, while there was no significant difference in P concentration among the three life forms. In terms of plant functional types, C, N, P, C ： N, C ： P, N ： P of assimilating branches were not significantly different from those of leaves. Comparing the results of this research with the global and Chinese scales found that plants in Ebinur Nature Reserve had lower P concentration, higher N ： P and C ： P, indicating shortages of N and P, especially P in plants studied.