Multi-scale temporal variation characteristics of climate in Lai'an county and its impact on climate productivity
Using the temperature and precipitation data of the National Weather Station of Lai'an county from 1961 to2015, the Thornthwaite Memorial model was used to calculate the climate productivity, and the temporal and spatial variation characteristics of the temperature and precipitation climatic factors in the past 55 years were analyzed to study the climate change.The impact is:in the past 55 years, the heating trend is significant, the temperature rise is 0.23℃/10 a, this trend is a mutation phenomenon, the specific mutation point is 2001.The precipitation is fluctuating and rising, and the fluctuation range is large.The maximum fluctuation range is as high as 1 230 mm.The annual average temperature and precipitation on the interannual scale are mainly quasi 4～8 a, and the periodic signals on the interdecadal scale are mainly quasi 16 a.In the past 55 years, the increase in climate productivity is significant, with an increase of 20 kg·km-2 per 10 years, this uptrend is a mutation phenomenon, the specific mutation point is 1995.At the interannual scale, the climate productivity is dominated by quasi-8 a.On the interdecadal scale, the periodic signal is dominated by quasi 16 a;climate productivity is affected by temperature and precipitation, and climate change is beneficial to the improvement of climate productivity, but only in water.Under sufficient conditions, the increase will be even greater.In the future, the"warm and wet"trend will increase the climate productivity of Lai'an by about 10％.
climate changeclimate productivityThornthwaite Memorial model
NETL
NSTL
万方数据
维普
