摘要
结合实地考察样点处蝗虫密度情况,研究了白石头蝗区海拔、植被、土壤理化性质与蝗虫数量之间的关系.结果表明,在海拔2000m^2400 m之间,随着海拔的升高,蝗虫密度减少.蝗虫主要分布在山地荒漠草原和山地草原带,最适宜的栖息场所为植被覆盖度介于35%~55%之间、土壤呈碱性(pH平均值为8.40)的环境.土壤含盐量范围为0.05%~0.60%,不会对蝗虫的活动产生影响.土壤有机质直接影响到地上植被的长势,从而影响蝗虫的生存.
Relationships between grasshopper occurrence and altitude, vegetation, soil pH value, soil salinity and soil organic matter are analyzed in the grasshopper plague area at Baishitou and the differences between different grasshopper density regions compared to sampling points at this site. The results indicate that with the altitude＇s increasing from 2000 m to 2400 m, the grasshopper densities reduce. Grasshoppers are mainly distributed in mountain desert and grasslands where the vegetation coverage is between 35 % and 55 %. Alkaline conditions also help to the survival of grasshopper. Salinity in a certain range has no obvious effects on the grasshopper density. Soil organic matter directly affects the growth of ground vegetation, thus affecting the survival of grasshoppers.
出处
《佳木斯大学学报（自然科学版）》
CAS
2009年第2期315-317,共3页
Journal of Jiamusi University：Natural Science Edition
基金
国家自然科学基金项目"中哈边境地区亚洲飞蝗侵入性迁飞机制及灾害预警的研究"(30660030)
新疆维吾尔自治区高校科研资助项目"新疆草原蝗灾遥感监测及预警的研究"(XJEDU2005I23)
教育部科技研究重点项目(地方高校)"新疆草原蝗虫成灾机制及综合防治技术的研究"(206165)资助
关键词
白石头蝗区
蝗虫
海拔
植被
土壤
the grasshopper plague area at Baishiton
grasshopper
altitude
vegetation
soil
