摘要
对内蒙古草原蝗虫连续泛滥成灾的原因进行了分析,发现气候变化是内蒙古草原蝗虫消长的最重要因素。冬季变暖,地面最低温度升高是蝗卵安全越冬的重要保证;在春季气候变暖的同时,配合一定量的降水,为蝗卵孵化出土提供了适宜的温湿度,加上温度升高牧草提前返青,蝗蝻有充足的食物,个体发育好,下一代产卵量增加;草原开垦,为蝗虫提供了更适宜的生存环境和更宽的食物选择范围,蝗虫数量不断膨胀,由不规则间歇性发展到近年来的持续性大发生。
This paper analyzed the reason why grassland locust in Inner Mongolia overflowed successively, it was found being an important factor that it becomes warmer in winter, locust＇s ovum survives the winter safely because the minimum ground temperature rises; while the climate becomes warmer in spring, cooperated with certain amount of precipitation, which offers suitable heat and humidity for locust＇s ovum to hatch. In addition, higher temperature leads to herb green ahead of time, the locusts thus have sufficient feed, the ontogeny is good. In a word, climatic change is the most important reason that the grassland locust breaks out. In addition, grassland cultivation nables the locust to possess more suitable living environment and wider range of food selection. Therefore, the locust＇s quantity is expanding constantly, from irregular intermission to constant and great break in recent years.
出处
《草业科学》
CAS
CSCD
2006年第8期78-82,共5页
Pratacultural Science
基金
国家社会公益研究专项(2003DIB4J146)资金资助项目
内蒙古气象局科研项目(200403)
关键词
内蒙古
草原蝗虫
气候变暖
Inner Mongolia
grassland locust
climatic warming
