Carex brevicuspis is one of the dominant population in the wetland ecosystem of Dongting Lake,and the Carex brevicuspis community is of great significance to the regulation of climate environment and water balance in this region.In the meantime,the Carex brevicuspis community provides the raw materials of food and habitats for the rare birds and fishes. This research had determined the content of crude fat,total phosphorus and ash of Carex brevicuspis′ s aerial part and underground part separately,and the r...