The decomposition of wetland plant litter is pivotal in the functioning of wetland ecosystems in terms of organic matter mineralization progress and nutrient cycling. Aiming to investigate the effects of the droppings of wintering herbivorous waterbirds on the decomposition of Carex cinerascens Kükenth litter a newly designated Ramsar Site, decomposition patterns of three types of samples were characterized and compared by waterbird dropping addition and litterbag in situ experiment. The three types of samples are OCL (only C. cinerascens litter), OWD (only waterbird droppings) and CMD (C. cinerascens litter mixed with waterbird droppings), respectively. A total of 105 decomposition bags were placed and the experiment lasted 150 days. The results showed that the average decay rate of C. cinerascens cellulose increased by approximately 32.12% by the addition of bird droppings, while the C. cinerascens lignin decay rate increased by approximately 83.05%. And the release of carbon, nitrogen and phosphorous of C. cinerascens increased by approximately 18.3%, 61.09%, and 66.71%, respectively. We concluded that the addition of waterbird droppings significantly accelerated the decomposition of C. cinerascens litter and the release of carbon, nitrogen, and phosphorus. We have a preliminary deduction that waterbird droppings (1) altered the original stoichiometric ratio of the litter, (2) increased the available nutrient content, (3) increased the colonization ability of the microorganisms, and (4) stimulated the production of a series of extracellular degradation enzymes. This study provides a thinking that the important role of waterbirds should be given full attention in wetland restoration planning and management.

就有机物矿化进程和养分循环而言，湿地植物凋落物的分解对于湿地生态系统的功能至关重要。为了研究越冬草食水禽粪便对新命名的拉姆萨尔草（Carex cinerascensKükenth凋落物）分解的影响，通过滴水添加和垃圾袋原位实验对三种类型样品的分解模式进行了表征和比较。三种类型的样品是OCL（仅C. cinerascens屑），OWD（仅水鸟粪便）和CMD（C. cinerascens垃圾与水鸟粪便混合在一起）。总共放置了105个分解袋，实验持续了150天。结果表明，通过添加鸟粪，灰葡萄纤维素的平均衰减率增加了约32.12％，而灰葡萄木质素的衰减率增加了约83.05％。和碳，氮和磷的的释放C. cinerascens分别增加了大约18.3％，61.09％，和66.71％。我们得出的结论是，添加水鸟粪便可显着加速灰黄梭菌的分解乱扔垃圾，释放碳，氮和磷。我们初步推断出水鸟粪便（1）改变了垫料的原始化学计量比，（2）增加了有效养分含量，（3）增加了微生物的定殖能力，并且（4）刺激了一系列粪便的产生细胞外降解酶 这项研究提供了一种思想，即应充分重视水鸟在湿地恢复规划和管理中的重要作用。