| 1. | Community composition and feature of arthropods in the wetland areas of dongting lake 洞庭湖湿地小型节肢土壤动物群落组成及其特征 |
| 2. | Effect of applying phosphorus diamine fertilizer on plant community composition and grassland quality in mowing grassland of typical steppe 施用磷酸二胺对典型草原区割草地植物群落组成及草场质量的影响 |
| 3. | The conclusion as follows : 1 . habitat heterogeneity influence avian community composition the higher habitat heterogeneity is with the more complex community 结论如下: 1 、生境异质性影响鸟类群落组成生境异质性越高,鸟类群落结构越复杂。 |
| 4. | Community composition and structure of giant panda habitat were studied by systematic survey along altitudinal gradients in xizozhaizigou nature reserve 摘要通过沿海拔梯度的系统调查,对小寨子沟自然保护区大熊猫生境的植物群落种类组成和结构进行了初步研究。 |
| 5. | Fish community composition was different among the sampling areas of niushan lake . small fishes , mainly acheilognathinae , were the most abundant in the centre area . the other areas were mainly c . erythropterus and t . swinhonis 中片的小型鱼类以(鱼旁) (鱼皮)为主,而西片和东片则以红鳍原?和似(鱼乔)为主,这与不同湖区的凶猛性鱼类数量有关。 |
| 6. | Until now there are contradictorily results regarding the dominant soc stabilization mechanisms , possibly depending on factors , such as ecosystem and soil type , soil depth , soil managements , as well as soil biological activity and community composition 至今,有机碳稳定性的主导机制尚不清楚,但影响因素与生态系统类型、土壤类型、土层深度、土壤管理措施、土壤生物活性及群落组成等有关。 |
| 7. | We concludes that the selected herbicide for smooth cordgrass does not obviously affect community composition and the habitats of benthic species , the coherent variation trend of benthic community composition correlates with time between experimental zone and controlled zone 这表明互花米草防除药物对底栖生物群落组成结构及其生境的干扰不大,试验区与对照区底栖生物群落组成结构总体一致的变化趋势与时序有关。 |
| 8. | Abstract : change in soil temperature induces the changes in the microbial community composition and their activity ; some communities at higher temperatures have the ability to access to or metabolize substrates that are not used by members of the microbial community at lower temperatures ; therefore , increases in soil temperature will influence the c , n and s cycling in soil eco systems 文摘:土壤温度变化导致微生物群落组成及其活性产生变化;某些微生物群落成员在较高温度时有能力代谢那些在较低温度时不能被利用的基质;因此,土壤温度上升将影响土壤生态系统中的c 、 n 、 s循环。 |
| 9. | Three methods , namely , community species composition similarity analysis , community composition similarity analysis , and community characteristic similarity analysis , were employed to study the similarity of insect pest - natural enemy communities of three rice types ( early rice , middle - season rice and late rice ) and their three development stages ( tilling stage , boot stage and milk stage ) in the yangtze - huaihe region of anhui province 摘要采用群落种组成相似性分析、群落组成相似性分析和群落特征相似性分析3种方法,研究了安徽江淮地区早稻、中稻、晚稻3种稻型及分蘖、孕穗、乳熟3个生育期害虫天敌群落的相似性。 |