Abstract:

The Poyang Lake, the largest freshwater lake in China, is considered as one of the most important wetlands in the world. “Plateshaped Lake Enclosed in Autumn” has a long history and is widely used in this lake. It is an unique fishing method employed by local fisherman in the midlower Yangtze Basin trying to clear the fish during lowwater periods. Theye entrench and built short dam in the platelake to keep more water and fish when the water level falls lower than sublakes in autumn, enabling the fish in platelakes grow larger and economic benefits will be enlarged from such a fishery mode. In the paper, PRA (Participatory Rural Appraisal) was adopted to survey the history and present situation of the “Plateshaped Lake Enclosed in Autumn” in Nanji Wetland National Natural Reserve of the Poyang Lake, Jiangxi The results showed that there were 26 PlateLakes which were typical of socalled “Plateshape Lake enclosed in Autumn” fishery model in this area. The PlateLakes were contracted with fishermen from Nanji Town, Chaoyang Village, Hongwei Village, or Xiangyang Village. Fishes, shrimps and crabs were cultured in these lakes. Birds in the Nanji Wetland National Nature Reserve show a Mtype monthly dynamics, with significant different amount among line transects, but no significant differences in species number among months and line transects. The positive and negative influences of  the “Plateshaped Lake Enclosed in Autumn” fishery model were found on the population number and distribution of migratory birds and ecological function of their habitats. In the end, the establishment of sustainably social and economic development of the “Plateshaped Lake Enclosed in Autumn” fishery model was discussed and practicable management strategies were deduced for the conservation of migratory birds. Although excessive catch on fish would threaten  resources and sustainable development of the Poyang Lake “Plateshaped Lake enclosed in Autumn” play its  positive role in the function of habitat for winter birds. And it is one of the methods to achieve the fishing right, we can do some useful measures to protect the winter birds and their habitat in the Plateshaped Lake Enclosed in Autumn, such as pumping water, drainage water in different time, forbidding excessive fishing etc