According to the daily temperature and precipitation data of 44 stations in 1961-2007 and part of the woody plant data of Beibei observation stations and Renshou observation stations in 1963-1988, the Chinese Academy of phenological observation network in Sichuan-Chongqing, temperature, precipitation, season, woody plant phenology variation were analyzed. The results showed that mean annual temperature of the last 10 years were 0.68 ℃ higher than the previous 37 years, and mean annual precipitation basically unchanged. Low temperature is mainly distributed in the western Sichuan Plateau, and the number of low temperature days and accumulated low temperature decreased. Mean daily maximum temperature in the southern region of the western Sichuan Plateau tended to decrease, while that in other regions increased. Mean daily minimum temperature was confirmed to have warming trends, and that in the southwestern Sichuan and the northern Sichuan Plateau grew faster. Precipitation in the central and southern of Sichuan Basin declined, southwest of Chongqing and western Sichuan plateau tended to increase. Precipitation days in the western Sichuan Plateau demonstrated an increasing trend, that in other regions tended to decrease, especially, those decreased rapidly in the east of Sichuan and Chongqing. According to Zhang Baokun Designate Temperature Method to define seasons, spring starting time delayed in Renshou, advanced in Beibei, and autumn starting time delayed in those two stations. In the leaf expansion phase, apricot and black locust of Renshou, and black locust, Metasequoia, Bauhinia, Indus of Beibei delayed, wisteria, peaches of Beibei advanced. In the leaf defoliation stage, black locust of Renshou advanced, but all plants of Beibei delayed.
WANG Bing-yun, FAN Guang-zhou, DONG Yi-ping, HUA Wei, ZHOU Ding-wen, ZHU Li-hua, ZHANG Qi
. Climate and Phenology Variations in Sichuan and Chongqing[J]. SCIENTIA GEOGRAPHICA SINICA, 2011
, 31(6)
: 674
-681
.
DOI: 10.13249/j.cnki.sgs.2011.06.674
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