查询词典 cold zone

Holocene"periglacial phenomena"were found at many places continuously. However, by comprehensive study, this thesis believes that these"periglacial phenomena"are almost the results of seasonal freeze-and-thaw action, not the strict periglacial phenomena. Only in some high mountain areas and northeastern zigzag zone of farming and animal husbandry, there were periglacial phenomena developing conditions in the cold stage of the Holocene.

我国北方农牧交错带全新世的&冰缘现象&不断有所发现，但本文经过综合研究后认为，这些&冰缘现象&绝大部分都是季节性寒冻作用的产物，而非严格意义上的冰缘现象，只有局部中高山地区和北方农牧交错带东北部现代气温在0℃以下的地区，全新世低温期才具备发育冰缘现象的条件。

P in Shule River Alluvial Fan Oasis in Gansu subsidized by CNSF. Through field geological and environmental observations and sampling, quartz OSL dating, organic carbon ~(14)C dating, as well as analysis of TOC,grain size and Pollen assemblage of the samples from ten sediment profiles in front fine grain sediment zone of the Shule River Fan, the results obtained as follows:(1)The vegetation evolution history on Shule River Alluvial Fan and circumjacent since about 13 ka B.P. could be divided into 6 phases: about 12.1-13.1ka, a sparse coniferous and broadleaf trees - shrub grassland, cold and wet climate; 9.2-12.1ka, shrub grassland, temperature rising but precipitation and humidity getting down; 5.8-9.2ka, sparse forest with the most flourish shrub grassland under the optimal climate; 4.3-5.8ka, coniferous and broadleaf mixed forests -shrub grassland, temperature rising slightly and getting dry; 4.3-2.8ka, grass vegetation and climate became more dry; 2.8-2.3ka, coniferous forests -shrub grassland, precipitation and temperature getting down, but a higher relative humidity.

本文依托于&甘肃疏勒河冲积扇5万年来古天气环境与古水文演化&项目，以疏勒河冲积扇为研究对象，通过对疏勒河冲积扇扇缘细土带全新世古天气和古水文演变进行了20余个剖面的观测和取样、石英OSL和~(14)C测年、粒度组成和TOC分析以及孢粉鉴定，获得了以下成果和熟悉：(1)距今约13ka年来冲积扇和周边植被演化经历了6个阶段：约13.1～12.1ka，以针叶林为主的针阔混交林～灌丛草原，天气冷湿；12.1～9.2ka，灌丛草原，气温升高，降水量较低；9.2～5.8ka，疏林灌木草原，植被茂盛，温度和降水最佳；5.8～4.3ka，以针叶树为主的针阔混交林～灌丛草原，气温较高，降水减少；4.3～2.8ka，草原植被，天气变干；2.8～2.3ka，针叶林～灌木草原，降水减少，温度降低，相对湿度有所增加。

Tender insects that live abroad either enjoy only the short period of one summer, or else doze away the cold, uncomfortable months in profound slumbers; but these residing, as it were, in a torrid zone, are always alert and merry: a good Christmas fire is to them like the heats of the dog-days.

生活于野外的脆弱的昆虫，或者仅能愉快地度过一个短暂的夏季，或者在沉睡中度过寒冷难受的那几个月，然而这些生活在可以说是&热带&地方的虫儿，却始终是活跃而欢快的。对于它们，熊熊的圣诞节炉火好比是三伏天的暑热。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。