摘要
稻田生态系统是一个不稳定的生态系统,包括稻田和非稻田生境2个部分。随着水稻的移栽与收割,稻田蜘蛛群落周期性地呈现出群落重新形成、群落发展和群落瓦解3个阶段。这一群落的发展不同于自然群落的演替。因此,将稻田生境内蜘蛛群落的重新形成过程定义为群落的重建,而非稻田生境内的蜘蛛群落称之为稻田生境内蜘蛛群落的种库。群落重建是一个季节性的、可重复的动态变化过程,以群落的周期性彻底瓦解和周期性重新形成为最主要特征。种库为群落的重建提供移居者并接受群落瓦解时所迁出的蜘蛛.二者之间呈现出互补的相互关系。保护群落的种库将有助于自然天敌群落的重建。自然天敌群落的重建是自然天敌保护和持续利用的生态学基础的一个重要组成部分,对天敌的保护利用和天敌效能的提高有十分重要的意义。
Rice ecosystem, an unstable ecosystem, is composed of rice fields and non - rice habitats. With rice being transplanted and harvested periodically, spider community in rice fields also appears periodically 3 different stages, community reformation, development and collapse. This kind of community development is different from the succession of a natural community. Therefore, the community reformation in rice fields is conceptualized as community reestablishment, and the spider community in non-crop habitats is named as the species pool of the spider community in crop fields, which provides colonies for community reestablishment and accepts emigrants from collapsing community in paddy fields. Community reestablishment is a seasonal, reversible and dynamic process which has the characteristics of periodic collapse and periodic reformation, and has a mutual complementary relationship with its species pool. Conserving species pool will benefit the reestablishment of spider community. It is one important part of the ecological basis for conserving and utilizing natural enemies, which is of important significance to their conservation and efficacy enhancement.
出处
《蛛形学报》
1999年第2期89-89,共1页
Acta Arachnologica Sinica
基金
国家自然科学基金(39770514)
国家自然科学基金(39830040)
关键词
稻田
蜘蛛群落
群落重建
种库
天敌保护
Paddy fields Spider community Community recstablishmcnJ Species pool
