摘要
对退化草地恢复 8年后 ,由于小叶锦鸡儿 (Caragana microphylla)灌丛引起的周围植物生物量、植物组成、羊草中化学成分、土壤中大量营养元素和微量营养元素的变异情况进行了研究。结果表明 ,退化草地恢复过程中小叶锦鸡儿灌丛诱导了植物组成、生物量和土壤化学元素含量在空间上的分异 ,这种生态效应有利于退化草地的恢复。
Caragana microphylla is a leguminous shrub wildly distributed in typical steppe of Inner Mongolia. It has significant impact on soil properties and plant distribution. In this study, we investigated variation of plant biomass, composition, element content in Leymus chinensis , soil macro and micro nutrient contents induced by Caragana microphylla shrub in a degraded typical steppe of Inner Mongolia fenced for 8 years. Results indicated that Caragana microphylla shrub induced variations of plant biomass, plant composition and soil chemical element contents. The effects benefit the recovery of degraded grassland. The ecological significance of Caragana microphylla in typical steppe is discussed in this paper.
出处
《草业学报》
CSCD
2002年第1期24-30,共7页
Acta Prataculturae Sinica
基金
国家重点基础研究发展规划项目 (G2 0 0 0 0 1 860 7)
中国科学院知识创新工程重大项目 (KSCX 1 - 0 8)
