【作者】 廖燕； 朱君君； 孙振钧； 王冲； 张宁；

【Author】 Liao Yan Zhu Junjun Sun Zhenjun Wang Chong Zhang Ning (College of Resources and Envirormental Sciences China Agricultural University,Beijing 100193)

【机构】 中国农业大学资源与环境学院；

【摘要】 本研究采用田间调查方法,对华北盐渍改造区7种土地利用方式下的蚯蚓种群特征的变化进行详细调查,分析土地利用方式对蚯蚓种群造成的影响,同时探讨了不同土地利用方式下土壤肥力的差异,并对蚯蚓种群特征与土壤生物肥力的相关性进行研究。结果表明:蚯蚓的物种数、种群密度、生物量、年龄结构及 Shannon-Weiner(H′) 多样性指数,与土壤化学及生物学性质的大部分指标具有显著的相关性,对不同土地利用方式下的土壤肥力状况有一定的响应关系。更多还原

【Abstract】 Field survey was adopted in the research.We investigated the earthworm species in alkali land in Quzhou country,Hebei Province.In this paper,5 indicators:species,population density,biomass,age structure and H’,which can indicate the biodiversity pattern of earthworm-were employed to investigate the effects of different Land use types on earthworm biodiversity pattern.The relationship between Land use types and soil character was discussed after measuring soil character under ways of soil using.The re- sults indicated that:The number of earthworm species,its population density,biomass,age structure and diversity index were obviously related to most indices of soil chemistry and biological characteristics,also responding to soil fertility in different land use.With earthworm population characteristics as the evalua- tion index,the result corresponded with that of index evaluation using soil biological characteristics and soil chemistry.Therefore,it is practical to synthetically appraise soil biological fertility using earthworm population characteristics.更多还原