SEOUL, Aug. 29 (Xinhua) -- South Korea will have shorter winters and longer summers, said the National Institute of Meteorological Research on Wednesday.

The winter season in Seoul, which typically begins in early December and ends early March, will be much shorter. By 2090, it will begin from late December and end around the middle of February, 36 days shorter than the summer in 1920, experts attending the "Workshop for Experts of Climate Change" held in Seoul said on Wednesday.

Meanwhile, the summer will last about 20 days longer than 1920 and the hot and humid season is expected to last from early May through late October, the experts said.

The climate change on the peninsula will also affect the ecosystem, they said.

According to a report by Seoul National University, the average temperature in the ocean will increase. By between 2071 and 2100, the average temperature of the East Sea will increase by 4.1 degrees Celsius.

The increase will effect fish species. Subtropical fish species will slowly become rare and tropical species will be more prevalent in the Sea of Japan.

In the past 40 years, there has been an increase in catches of subtropical fish such as squid, anchovy and mackerel and a decrease in the catches of cold current species such as pollack with the average temperature of the East Sea increasing by 0.9 degree Celsius, the report said.

It is also expected that the climate change will lead to more typhoons hitting the nation and there will be big changes in the amount of precipitation, which could result in severe flooding or drought.

Sejong University's research shows that when the country's average temperature increases by 1 degree Celsius, rainfall can increase or decrease by 10 percent. It warns that the drastic increase or decrease can change ecosystems near rivers and streams.

The workshop participated by about 150 local weather experts and is set to end on Thursday.