对丛生克隆植物种群丛生克隆觅养功能和资源转移的新认识

New knowledge of foraging function and resource translocation of caespitose clone in clonal population in bunchplants

论述了在地球上 ,特别是在草原和稀树干草原丛生克隆植物的分布与数量。近年来 ,大多数植物种群生态学家都把注意力集中于研究根茎克隆植物或葡伏茎克隆植物的许多重要问题 ,而轻视研究丛生克隆植物分株和分株集团的觅养功能和资源转移。因此 ,直到现在许多植物种群生态学家仍然不清楚丛生克隆的觅养和资源转移。作者等研究了丛生禾草 Stipa baicalensis和 Festuca ovina丛生克隆的觅养和资源转移 ,并发现丛生克隆不但具有泛资源整合作用也具有有限资源整合作用 ,不但具有克隆集合内分株集团觅养 ,而且也具有分株集团内分株觅养 ,而根茎和葡伏茎克隆仅具有分株觅养和泛资源整合作用 。

Distribution and quantity of clonal caespitose plants in the world,particularly in steppe and sawanna were expounded in detail in this paper.Of late years,most plant population ecologists centred on an investigation on foraging strategies and resource translocations in clonal rhizomatous or stolonate plants,and they undestimated studies of foraging functions and resource integrations among rameats and ramet groups in clonal caespitose plants.Thus,at present,most of plant population ecologists still don't know about foraging behaviour and resource translocation of the caespitose clones.Authors profoundly studied foraging and integration of these clones in bunchgrasses stipa baicalensis and Festuca ovina,and came to the conclusion that these clones have both extensive resource integration and restrictive foraging function,and also both foraging of ramet groups within clonal assemblage and foraging of ramets within ramet troup,while rhizomatous and stolonate clones have only extensive resource integration and foraging of ramet in the clone.Foraging and integration of caespitose clone are much more complex than rhizomatous or stolonate clones.