摘要
蚯蚓是陆地生态系统中重要的大型土壤动物之一,其种类组成、种群大小及群落结构在一定程度上可以反映当地的土壤状况。常用的蚯蚓采样方法如手挖、电击法、福尔马林法、芥末法、异硫氰酸丙烯酯法存在很多差异,各方法都存在一定缺点。本研究应用茶枯溶液进行蚯蚓采样,操作简便易行。试验结果表明,茶枯法在荷木林、马占林、马尾松林的单位面积所驱赶出的蚯蚓个体数依次为62.1、70.3、96.2numberm-2,各林区采样效率依次为80.1%、70.9%、75.8%;3林区平均个体数采样效率为75.3%。除内栖类蚯蚓西土寒宪蚓外,其他蚯蚓种均能完全被驱赶采样;未能采样蚯蚓大部分为西土寒宪蚓幼体;在进入干季11月份采样效率显著降低。
The earthworm is one of the most important soil macrofaunaes in terrestrial ecosystems. The species composition,population size and community construction are significant indicators of soil conditions. There are many different methods for earthworm sampling,such as hand-sorting,electrical octet,formaldehyde,mustards,and allyl isothiocyanate,abbreviated AITC. Each of the methods has its own disadvantages. In this study we used a solution from the dregs of tea-oil tree seed for earthworm sampling. With the sampling methods,earthworm individuals of 62.1,70.3 and 96.2 per square meter were sampled respectively in Schima superba,Acacis mangium,Pinus massoniana in three different plantations,and the sampling efficiencies were 80.1%,70.9% and 75.8%,respectively. The mean of sampling efficiencies in the three plantations was 75.3%. The results showed that all of the earthworm species could be expelled from the soil except Ocnerodrilus occidentalis,especially the juveniles and sub-adults. A significant reduction was found in sampling efficiency in November which corresponded to the dry season.
出处
《四川动物》
CSCD
北大核心
2010年第3期401-406,共6页
Sichuan Journal of Zoology
基金
国际科学基金(D/4046-1)
广东省科技计划项目(2009B020311010)
关键词
蚯蚓
采集方法
茶枯
采样效率
手挖
earthworm
sampling methods
the dreg of tea-oil tree seed
sampling efficiency
hand-sorting
