Meteorological Conditions and Forecasting Methods of Acer truncatum Discoloration in Horqin Sandy Land
This paper digitized the red leaf data of Acer truncatum in the past 6 years to obtain the discol-oration rate and discoloration law of the maple leaf,and studied the meteorological threshold conditions of different color change periods in combination with meteorological element data.The correlation between different meteorological factors and the discoloration rate of maple leaves was used to study the short-term and long-term forecasting methods of the discoloration rate of maple leaves in detail.The results showed that the first red day sequence of Acer truncatum was October 1st,most maples were in spotted red in ear-ly October,and the pure red day sequence was October 15th,and the time of maple leaves in spotted red and pure red was greatly affected by daily meteorological conditions;the lower the daily minimum temper-ature,daily maximum temperature,daily average temperature,daily average humidity and daily mini-mum ground temperature,the higher the discoloration rate of maple leaves,and the discoloration rate was weakly correlated with daily precipitation,daily temperature range and sunshine hours;the lower the ac-cumulated temperature,the more sunshine hours,the lower the accumulated humidity and the less accu-mulated precipitation in the past 10 days,the higher the discoloration rate of maple leaves;the long-term forecast factors were the monthly average humidity in June,the monthly average temperature in Septem-ber,the average sunshine hours in September,and the average maximum temperature in September;the discoloration factor equation of maple leaf was established based on temperature thresholds,and the mete-orological index and service products were established in combination with maple appreciation weather factors,and was tested to be good on applicability.
Acer truncatummaple leaf discolorationmeteorological thresholdforecast factormaple red index
NETL
NSTL
万方数据
