中国农业科学2012，Vol.45Issue(2)：292-301,10.DOI:10.3864/j.issn.0578-1752.2012.02.011
亚高山草甸冬夏季牧场土壤动物群落多样性
Soil Fauna Diversity in the Rotational Grazing Pasture in Subalpine Meadow
摘要
Abstract
[Objective] The objective of this study is to understand the community characteristics of soil faunal in rotational grazing pasture in subalpine meadow of Tibetan Plateau. [Method] An investigation was made on the soil faunal communities under different grazing time (winter pasture, WP and summer pasture, SP) from May to October 2008 in subalpine meadow of north-west in Sichuan. The methods of Baermann, Tullgren and hand-picking were used to separate soil animals from soil samples (0-15 cm). [Result] A total of 46 746 individuals were collected, belonging to 6 phyla, 9 classes, 16 orders and 61 groups, in which 22 092 individuals belonging to 6 phyla, 9 classes, 15 orders and 42 groups were colleted from WP, while 24 654 individuals were colleted from SP which belonged to 6 phyla, 9 classes, 15 orders and 46 groups. And Nematoda was dominated group both in SP and WP. The soil animal communities under different grazing time had different number changing tendencies and varied with the seasons, both in individual numbers and communities. The numbers of individuals of the soil fauna were SP>WP in spring, WP>SP in summer and autumn and the group number were SP>WP in spring and autumn, WP>SP in summer. The individual densities and group numbers in different depths had their variation in seasons. Both the densities and group numbers in SP were diminishing with depth in threeobservation seasons. The group numbers of soil fauna decreased obviously with increasing soil depth in all three seasons while from spring to autumn, the individual densities changed from diminishing with depth to increasing with depth. In spring all of diversity indices of WP were higher than those of SP and showed no significant difference. In summer the Margalef index and Simpson index of WP were higher than those of SP, while Shannon-Wiener index and Pielou index of WP were lower than those of SP and Simpson index, Shannon-Wiener index and Pielou index showed significant difference between WP and SP. In autumn, the Simpson index of WP was significantly higher than that of SP while other diversity indexes were lower than those of SP, and Shannon-Wiener index and Pielou index in WP were significantly lower than those of SP. [Conclusion] Compared with other regions, the soil animal community composition in the subalpine meadow of the eastern Tibetan Plateau was simpler, while the density was higher. Rotational grazing had a significant influence on seasonal dynamics of soil fauna, while the composition of soil animals in two habitats was similar.关键词
亚高山草甸/轮牧/土壤动物/群落多样性Key words
subalpine meadow/ rotational grazing/ soil fauna/ community diversity引用本文复制引用
肖红艳,刘红,李波,袁兴中,孙书存,陈忠礼..亚高山草甸冬夏季牧场土壤动物群落多样性[J].中国农业科学,2012,45(2):292-301,10.基金项目
国家自然科学基金(30670333) （30670333）
