Evaluation of biodiversity in farmland restoration project for protection of wetland ecology by planting different crops

Abstract The wetland played a crucial role in producing oxygen and purifying the air, so the conservation projects were essential in response to natural and perceived destruction. The farmland restoration project was utilized to repair the southern buffer zone of Jiangsu Yancheng Wetland National Nature Reserve for Rare Birds on the investigation and analysis of migratory birds, soil fauna and crops. In this paper, the five different crops of colza oil, mustard, Chinese cabbage, wheat, barley were planted in the restoration plots, which was eaten by migratory birds overwinter resulting to the low yield of crops. The species and biomass of soil fauna in non-winter (7 species and 98 soil fauna) were more than that in winter (6 species and 54 soil fauna), and the results of restoration plots was more than that in control. The variety and number of migratory birds had a significant improvement (18 species and 164231 migratory birds), which was owed to different crops and soil fauna. This study found that farmland restoration project could significantly improve the ecological environment of wetland, enrich the biodiversity and attract more migratory birds for inhabit.