全球变化知识资源中心

The Wolonghu Wetlands is an essential ecological barrier to resist southward expansion of the Horqin Desert, also is an important stopover and energy supplement site for the global birds migrating in the route of East Asia to Australia. This paper aims to clarify the characteristics of Climate Change and adaptability assessment of migratory bird habitats in Wolonghu Wetlands. The study used the historical measured data of the past 60years and the predicted results by CMIP5 climate model to analyze the variation and development trend of temperature and precipitation in history and future. The impacts of extreme weather events on migratory bird habitats have been analyzed as well. The results show that: (1) The water level is one of the important factors affecting the birds and their habitat in Wolonghu Wetlands. The water level dropped from 88.9m to 87.83m, and the number of birds raised by 2orders of magnitude. (2) The whole climate is getting warmer and wetter. (3) In the past 60years, extreme precipitation accounted for 19% of total precipitation, and 7.7% in July. In the next 30years, extreme precipitation accounts for 13.9% of the total precipitation in the RCP4.5 scenario, and 10.1% in July. Compared with history, extreme precipitation is more concentrated in July. (4) In the past 60years, no severe drought and extraordinary drought occurred in summer. The occurrence probability of above extreme events in the next 30years is 1.83%. This study can provide some references for relevant management departments of Wolonghu Wetlands to formulate wetland protection and restoration measures.