摘要
为了解气候干旱对土壤动物群落的影响,2009年1月和2010年1月分别对贵州喀斯特高原地区的石桥小流域不同等级石漠化样地的土壤动物群落进行了调查。结果表明,两期土壤动物的优势类群是蜱螨目和弾尾目,常见类群和稀有类群变化较大,与2009年1月相比,2010年1月土壤个体数和类群数都减少。两期土壤动物的个体数与气温呈极显著的负相关关系,与降雨量呈极显著的正相关关系,与土壤温度呈显著的负相关关系;土壤动物的多样性指数与含水量呈显著的负相关关系,均匀度指数与含水量呈极显著的正相关关系。土壤动物的个体数与含水量2009年1月呈显著的正相关关系,2010年1月呈极显著的正相关关系。经过两期土壤动物群落的对比分析,认为影响石桥小流域土壤动物群落的主要因素是长时间的气候干旱。
In order to understand the impacts of arid climate on soil animal communities, soil faunae from sampling plots of different grade of rocky desertification in Shiqiao catchment were investigated, respectively, in January 2009 and January 2010. The results showed that, the dominant groups of soil animals were Acarina and Collembola, and the common groups and rare groups varied greatly. The number of individuals and groups of soil animals reduced in January 2010, as compared with that in January 2009. The number of individuals had a significant negative correlation to air temperature and soil temperature, but a significant positive correlation to rainfall. There was a significant negative correlation between the diversity indices of soil animals and soil water content, while a significant positive correlation between the uniformity indices and soil water content. The number of individuals of soil animals showed a significant positive correlation with water content both in January 2009 and 2010. From the comparative analyses of the soil faunae, it can be known that the main factor that affects the soil animal communities in Shiqiao catchment is the prolonged arid climate.
出处
《热带地理》
北大核心
2011年第4期357-361,367,共6页
Tropical Geography
基金
国家"十一五"重点科技支撑计划项目(2006BAC01A09)
贵州省社会发展科技攻关计划项目[(2009)3013]
