The effect of climate change on the climatic regionalization of wine grapes in Northeast of China

Abstract

Northeast China is one of the major wine-making grape bases in China. It is of great significance to study the influence of climate change on grape planting regionalization in northeast China for industrial layout and grape variety selection. According to the 168 weather stations in northeast China Daily meteorological data, calculate the frost-free period, growing season dry degree, active accumulated temperature of April to September, average annual extreme low temperature and other indicators, the 45 years from 1967 to 2011 in the northeast of grapes zoning index change trend, using GIS analysis of wine grapes in the northeast suitable cultivated area change of time and space. The results showed that the temperature increased obviously in the growing season, the indexes such as frost-free period and accumulated temperature of activity increased greatly, the suitable cultivation area of wine grapes expanded greatly to the north, and the dryness changed obviously between generations, showing a rising trend of fluctuation. The impact of climate change on viticulture varies from region to region, but overall, climate change is beneficial to wine viticulture in northeast China. The article also makes a series of Suggestions on how to use the effects of climate change to select varieties and improve wine quality.