Both types of vegetation are characterized by dense plant community structure , short growing period and a low productivity 高山种类为主。植物低矮，群落结构简单，仅为一至二层。
The long - time ecological effect of eutrophication control measures such as damming , dredging , diluting etc 结果表明，大部分湖区浮游植物群落结构与治理前基本相同，仍以蓝藻占绝对优势。
The effects of restoration and disappearance of submerged macrophytes upon the structure and biodiversity of protozoan community 沉水植被的重建与消失对原生动物群落结构和生物多样性的影响
Community structures and diversity of natural enemies between integrated pest management and conventional management of jujube orchards 综合治理与常规防治枣园天敌昆虫的群落结构及其多样性
The correlation of partial environmental factors to animal community structure in longdong cave and wanjiadong cave of guizhou province 贵州龙洞和万家洞内部分环境因子与动物群落结构的相关性
It has also expounded the compounding theory and methods on the relationship of varieties , the construction and development of communities 并就种间关系、群落结构、群落演替等方面阐述配置的原理与方法。
The acute toxic effect and subtle toxic effect to the eisenia foetida of four kinds of pesticides in different concentrations were studied 研究了四种农药对土壤线虫密度和群落结构的影响。研究结果如下： 1
The diversity , community structure , and species composition of springtails in the soil reflect the status of soil quality and contamination 土壤中跳虫的多样性以及群落结构、物种组成都反映了土壤的质量和污染状况。
Changes in community structure and function changes are a function of changes in geomorphic , physical and biotic variables Rcc宣称生物群落最大限度利用自然河流中的能量和资源，物理因素的变化将导致群落结构的变化。
Capacity evaluation of different media for isolating predominant phenol - degrading bacteria from activated sludge with community structure - specific dna probes 微生物群落结构探针杂交评价不同培养基从活性污泥分离优势菌群的能力
