高寒气候

The response of alpine ecosystem to climate change becomes a hot topic of scientific research.

其特有的高寒生态系统对气候的响应一直是科学家关注的热点。

We decide the fit breed of each place according to the geographical and periodical seeding experiments: FD1 like gongnongyihao fits the drought-cold areas such as Changling; FD3-5 like Haygrazer, Vector, Key etc fit the Huabei area such as Beijing and Taiyuan; FD6~8 like Lobo, Durango Eclogue, Titan802 etc fit the middle and lower reaches of Yangzi river such as Zhengjiang.3.During the course of climatic ecology division of alfafa, accumulated temperature above 5℃ is used as the main index, by gradually division, the whole country is divided into 6 climatic zones, namely Northeast zone, Huanghuai zone, Yangzi river valley zone, Northwest of Mongolian zone , Qingzang altiplano zone and unfit zone of South China. In each climatic zone, based on the main and secondary indexes, the climatic zones is divided into second climatic ecology regions, such as north of Xinjiang region, south of Xinjiang region and south of Tibet region etal, total 21 regions.

地理分期播种试验，确定了各地适合品种：以长岭为代表的干旱高寒气候适合种植秋眠1级品种，如公农一号；以北京和太原为代表的华北地区适合种植秋眠级3～5级的品种，如Haygrazer、Vector、Key等；以镇江为代表的长江中下游地区适合种植秋眠级6～8级的品种，如Lobo、Durango、牧歌、巨人802等品种。

Through the study on the climate characteristics of high cold area of Qingzang Railway and using the construction experience in cold area for reference the technological measures of cold proof and heat insulation of tunnel s winter construction in high cold area are proposed.

通过对青藏铁路高寒地区气候特征的调查研究，借鉴东北等寒冷地区的施工经验，从隧道施工的材料、供水、供风、混凝土的搅拌、隧道洞内以及机械设备等方面进行了论述，提出了在高原寒冷地区隧道施工，其防寒保温的技术措施和方法。

It will be meaningful to look at the response of alpine ecosystem to climate change from the plant phenology point of view. However, phenology research is still very weak on the Tibetan Plateau, and the ground observations are also very limited.

从植物物候的角度去研究高寒生态系统对气候变化的响应是很值得探讨的，但目前在青藏高原这方面的研究却比较缺乏，且实测数据也有限。

Climate change will intimidate the endangered species and the species that has accustomed to cold weather, such as, panda, Yunnan snub - nosed monkey, white-lipped deer, Taiwania flousiana Gaussen, Ammopiptanthus mongolicus and Tibet's antelope.

未来气候变化将对濒危物种的栖息地及气候适应范围狭窄的高山物种，已适应青藏高原高寒气候的物种和迁移能力弱的物种，如大熊猫，滇金丝猴，白唇鹿，秃杉，沙冬青和藏羚羊等造成威胁。

The objectives of the study were to: 1 reveal the responses of vegetation and soil to degradation by investigating community characteristics and soil physic-chemical properties; 2 quantify the contributions of human factors and natural factors and the relationship among the factors by analyzing the variation of each factor in past decades; 3 understand the succession of fenced undegraded meadow, artificial pasture, semi-artificial pasture and degraded meadow, and to 4 provide suggestions for restoration and rehabilitation of the degraded rangeland in the region.

本项研究旨在通过对黄河源区退化高寒草甸的植物群落特征和土壤特征调查，揭示植物和土壤养分对土地退化的响应；对源区人口及牲畜数量和国内生产总值，气候变化特点等因子的分析，量化人为干扰因子和自然因子的贡献率以及各因子之间的数量关系；以及对草地退化驱动力分析以及原生草地植被封育、人工草地、半人工草地的自然演替变化规律的研究，为高寒草甸退化草地恢复与重建提供科学依据。

This paper studied a new type greenhouse with double skins inflated roof and double layer glass wall suit for Chinese high cold areas. According to production arrangement, by controlled local piping ventilation, When the air velocity was 1 0 m/s near outlets, the temperature in tunnels of tulip seedbeds in greenhouse can be maintained between 2～8℃.

简要分析了适用于我国高寒地区气候特点的现代化双层充气膜—双层玻璃温室的设计特点，针对温室冬季花卉生产工艺上的具体要求，通过管道局部送风控制室内小气候，当风速为1.0m ／s 时，郁金香苗床内气温可维持在2～8 ℃之间，保证了郁金香促成栽培所需要的温度。

Aiming at characteristics of frigid zone in this paper, we developed and exploited three kinds of solar-energy preservation pigpens available for frigid zone.

本文针对北方地区冬季气候寒冷、持续时间长的特点，研制和开发了三种适应高寒地区的太阳能保温猪舍。

Situated in the paramos grassland region, the Source Area of Yellow River is at high elevation with cold climate.

黄河源区地势高亢、气候寒冷，属高寒草原区，是黄河的主要水源补给区。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。