关键词: 气象条件, 牧草长势, 牧草产量

Abstract: In order to evaluate the effects of the climate of spring 2020 on nationwide grassland ecosystem,using the meteorological and remote sensing data obtained by CAgMSS and MODIS systems,we analyzed the influence of meteorological factors including temperature and precipitation on grass production and vegetation quality of the grassland in China. The results showed that,except for the southeast of Inner Mongolia,southwest of Xinjiang and south central of North China where the temperature and precipitation were suitable for grassland growth,most meadow areas of China had high temperature but low precipitation,which impaired grass reviving and growth. The comprehensive estimation results showed that,the most part of grassland in China grew worse than that in last year,especially in the northern part of Xinjiang,the grass yield was 30%~50% less.

Key words: Meteorological condition, Growth of grass, Grass yield