摘要
利用环渤海2类典型蝗区飞蝗发生期资料和同期气候资料,对不同蝗区气候变化和飞蝗发生期的关系进行对比分析。结果表明:沿海蝗区和洼淀蝗区气候的差异是导致飞蝗发生期差异的重要因素,影响飞蝗发生期的主要气候因子为气温;沿海蝗区3、4月气温偏低0.2℃～0.4℃,导致夏蝗三龄期以前飞蝗发生期比洼淀蝗区偏晚2～3d,沿海蝗区其他月份气温偏高,气温的累积效应导致夏蝗三龄期以后发生期偏早;秋蝗发生期变化幅度小于夏蝗,与入夏后气温变异系数小相对应;20世纪90年代以来2类蝗区气温变化幅度不同是导致飞蝗发生期变化幅度不同的主要原因,且夏蝗发生期早晚与3、4月气温高低密切相关。
Based on the investigation data of oriental migratory locust occurrence and Corresponding meteorological records, a comprehensive analysis was made on the relationships between the occurrence of the locusts and the climate factors in coastal and low-lying locust areas around Bohat Bay. The difference in the locust occurrence between these two areas was mainly due to the effects of climate factors, and air temperature was the main one. The air temperature in March and April was 0. 2℃-0. 4℃ lower in coastal than in low-lying locust area, resulting in 2-3 days delay of the occurrence of summer locust nymphs before third phase in coastal locust area. In other months, the air temperature in coastal locust area was higher, and due to the accumulative effect of air temperature, the occurrence of summer locust nymphs after third phase took place earlier. The occurrence of autumn locusts had a smaller variation than that of summer locusts, which was corresponded to the small change of air temperature in summer. The different change pattern of air temperature in the coastal and low-lying locust areas around Bohai Bay since the 1990s was the main cause for the variations of locust phase, and the summer locust occurrence happened sooner or later was closely related with the air temperature in March and April.
出处
《生态学杂志》
CAS
CSCD
北大核心
2009年第7期1356-1360,共5页
Chinese Journal of Ecology
基金
国家科技部农业转化资金资助项目(2007GB24160444)
关键词
东亚飞蝗
发生期
气候变化
温度
oriental migratory locust
occurrence
climate change
temperature.
