Setenaly according to the analyses from selected profiles , we know that , it is cold and dry in this region during the early holocene when east asian winter monsoon ' s influence is obvious , so , it is a transition period from sand deposit to sandy soil deposit , when the layers become thinner gradually from north to south . during middle holocene , it is warm and humid , influenced evidently by east asian summer monsoon , so , it is an obivious pedogenesis , when there are generally well - developped holecene palaeosol ( so ) from north to south , and the pedogenesis in the south is better than that in the north , the soil is also thicker than that of the north . from late holocene to now , the climate changes to be dry and cold , but its changing scope is smaller than that of last glacial period 2 、就所选剖面分析来看，本区在全新世早期气候回返，相对较寒冷干燥，东亚冬季风影响较明显，此时为沙层堆积向砂质土壤过渡，自北至南堆积的沙粒渐细；全新世中期气候温暖湿润，东亚夏季风影响显著，此时为明显的成壤期，表现在自北至南普遍可见发育较好的黑垆土层，且南部的成壤作用比北部好，土壤的厚度也要大；全新世晚期至今，气候向干冷方向转化，但变化幅度远小于末次冰期。
Though the analysis of traditional architectural climate concepts ， this thesis elaborates the space and technological forms of traditional architectural patterns in the dry - and - cold and dry - and - hot regions of sichuan province and yunnan province with architectural typological methods , and puts forward an architecture pattern language for modern architectural design in these regions with special climate conditions 本文通过对传统建筑气候观念的剖析，以建筑类型学方法对川滇干冷干热地区的传统建筑模式进行空间形态和技术形态的分析，以川滇地区这一特定气候条件下的现代建筑设计为例，提出地域建筑发展应适应地域气候的设计原则。
( 5 ) since 3100 ab . r , through comprehensive analysis of these proxy climatic substitute indexes indicates : this was a dry and cold period in which the temperature fell the precipitation decreased ; the vegetation may be forest prairie ; human civilization further developed and the human " s influence on the environment was greater in intensity and wider in range 今，综合多气候代用指标和本期人类活动明显加强情况的分析表明：本期气候再次出现温度降低、降水量减少的变化，在趋于干冷气候条件下，在前期气候较适宜期发育的森林植被发生了退化，当时的植被可能为森林草原或干草原。
Firstly , evidence from depositional pattern suggests that the hsl has experienced an expansion - contraction circle since the late glacial epoch . the expansion and movement of the hsl or desert in early stage were clearly marked by the presence of paleo - aeoline sands . the occurrence of paleosoal characterized the stabilization and contraction of the hsl and also indicated the activity of pedogenesis on the paleo - aeilian sands 通过系列气候代用指标的分析，首次发现该地区粒度、磁化率指标值在两个大的峰值之间有多个小的峰谷出现，表明了在大的气候变化阶段次一级的暖湿?干冷气候波动，值的进一步做年龄的小尺度高分辨率研究。
A transverse secondary circulation is produced by the coupling of high and low jets , while the sinking branch of the secondary circulation providing the dynamic conditions for the dry intrusion air . during the period of the heavy rain process , dry intrusion descends southward along the intense constant potential temperature lines , which promotes the lower cyclone . in addition , the pouring of upper - level dry air not only decreases ground temperature behind the front but also increases surface pressure and velocity 由于高、低空急流耦合，在高空急流中心左侧产生的下沉运动和高空急流中心右侧、低空急流左侧产生的上升运动在锋面上形成一次级环流，次级环流的下沉支运动为对流层高层干空气和高位涡的下传提供了动力条件；进一步研究发现，干侵入沿相当位温密集带向南向下伸展，引起对流层低层气旋性涡度的发展；此外，高层干冷空气向下注入，导致地面温度降低、气压升高、风速加大、低层辐合增强、上升速度加大，从而促进了新的对流运动，引起降水增强。
This work carries out a temporal - spatial analysis and comparison in facial pattern , grain - size , and susceptibility of the sediments of the hunshandake sandy land ( hsl ) on the basis of studies of more than fifty geological sections , a number of samples collected from surface sands as well as results derived from previous studies . the preliminary results of this work provide new environmental information of the working area , which makes it possible to have a brief discussion about the evolution of the hsl since the late glacial epoch . this work can be summarized as the followings 晚冰期，浑善达克沙地全面扩张，达到了沙漠化最大规模，剖面中的古风成砂是最直接的证据，此时气候干冷；全新世早中期，浑善达克沙地成壤比较好，是一个大面积成壤期，相当于全新世适宜期，此时气候暖湿；全新世晚期，浑善达克沙地沙漠化正过程加强，在沙地各剖面上普遍发育风沙沉积，气温较干冷；目前：浑善达克沙地为另一成壤期，成壤作用相对于适宜期较差，气候干暖。
The result of analysis shows that the climate of the period during which these strata were formed was mainly dry and cold , and the pollen of herbs is predominant . in the later part of this period the temperature and humidity increased a little , especially between the two cultural layers there was a short but clear section of wet and warm climate and a temperate forest steppe landscape existed 古环境分析表明，文化层出现前后的这一段时期，一直以干冷气候为主，草本花粉占绝对优势，中后期温湿度有所增加，尤其上下文化层之间曾有一个短暂而明显的较为温湿的时期，出现了温带森林草原景观。
My research work is carried out to this target firstly , i do my work on the many mechanisms of dehumidification & refrigeration , researching environment - protecting and energy efficient methods of dehumidification & refrigeration - - dry fixed bed dehumidification & solar energy solid absorption refrigeratioa dry fixed bed dehumidification has been put in practice successfully instead of wheel dehumidificatioa solar energy solid absorption refrigeration substitutes for evaporation compressor refrigeratioa on the bases of the researching , i integrate dry fixed bed dehumidification with solar energy solid absorption refrigeration into a whole system - - dcs , which is drived by solar energy 然后在此基础上，对除湿和制冷进行集成，组成一个完整的除湿制冷系统? ?太阳能开式循环除湿制冷系统，希望以此代替目前我们在工程中由干式固定床型除湿和蒸汽压缩式制冷所组成的集成系统。该系统保持了既有的功能，既可以单独进行除湿供干风或制冷供冷风运行，还可以进行除湿和制冷的协作供干冷风运行；并且整个系统的主要能耗来自太阳能，使其环保、节能。
The most severely damaged will be the canadian low arctic tundra ; the wooded ural mountain taiga in russia ; the central andean dry puna in chile , argentina and bolivia ; the daurian steppe of mongolia ; the savannah of north - east india and nepal ; and the fynbos of southern africa 受害最严重的将是加拿大的下北极苔原，俄罗斯树木繁茂的乌拉尔山针叶林，智利、阿根廷和玻利维亚安第斯山脉中部的干冷高原，蒙古的干草原，印度和尼泊尔两国东北部的热带稀树草原，非洲南部的高山硬叶灌木群落。
( 3 ) 6000 - 5000ab . p , through comprehensive analysis of these proxy climatic substitute indexes indicates : this was a dry and cold period in which the temperature was the lowest and the precipitation was the least ; the vegetation may mainly be forest prairie ; in the early stage of the period appeared yangshao middle culture - the prosperous culture of miaodigou type , and in the late stage there was yangshao late culture - the culture of xiwang village type P出现了老官台文化，中后期即本区老官台文化之后，出现了仰韶早期文化。门） 6000 5000ab p ，综合多气候代用指标的分析结果表明：本期气候为全新世以来温度最低、降水量最少的最干冷时期，在这种干冷气候条件下，在前期气候最适宜期发育的森林植被发生了退化，当时的植被可能以森林草原为主。
