Profile of Chief Editor of Sciences in Cold and Arid Regions

1.Biographical information GuoDong Cheng, born on 11 July, 1943, in Shanghai, China, received his Bachelor of Science in 1965, from the Department of Hydrogeology and Engineering Geology at Beijing Geology College (now China University of Geosciences).In the same year, he started his research career at the Lanzhou Institute of Glaciology, Geocryology, and Desert Research, Chinese Academy of Sciences (CAS).     

Profile of Chief Editor of Sciences in Cold and Arid Regions

1. Biographical information GuoDong Cheng, born on 11 July, 1943, in Shanghai, China, received his Bachelor of Science in 1965, from the Department of Hydrogeology and Engineering Geology at Beijing Geology College （now China University of Geosciences）. In the same year, he started his research career at the Lanzhou Institute of Glaciology, Geocryology, and Desert Research, Chinese Academy of Sciences     

Profile of Chief Editor of Sciences in Cold and Arid Regions

1. Biographical information GuoDong Cheng, born on 11 July, 1943, in Shanghai, China, received his Bachelor of Science in 1965, from the Department of Hydrogeology and Engineering Geology at Beijing Geology College （now China University of Geosciences）. In the same year, he started his research career at the Lanzhou Institute of Glaciology, Geocryology, and Desert Research, Chinese Academy of Sciences （CAS）. Over the past 45 years, Professor Cheng has published more than 200 papers in peer-reviewed professional journals and     

干旱、半干旱区环境演变与可持续发展国际学术讨论会在阿拉善左旗举行

The International Workshop on Environmental Changes and Sustainable Development in Arid and Semi-arid Regions was held on September 10-14, 2007 in Alashan Left Banner, Inner Mongolia, China. A total of 81 delegates from 17 countries attended this workshop, including Australia, Egypt, Germany, Iceland, Italy, Kuwait, The Netherlands, Oman,[第一段]     

Sciences in Cold and Arid Regions (Initial Issue,December,2008;Bimonthly) Total Contents 2013

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Sciences in Cold and Arid Regions (Initial Issue,December, 2008;Bimonthly) Total Contents of 2019

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干旱半干旱区集雨绿化系统研究现状及其发展趋势

从集雨绿化系统的原理及其发展历史、设计技术参数出发,综述了国内外集雨绿化的经验和研究现状,通过兰州皋兰农业生态站的近几年的试验结果,详细讨论了集雨绿化系统的技术方法,改进集雨绿化系统各个组成部分的措施和开展集雨造林技术要点。同时,针对目前在干旱半干旱地区进行生态环境建设,建议采用微型集雨绿化系统,提高雨水利用效益,并指出今后需要开展的研究和在推广应用中需要解决的主要问题。     

Wild Barley, Hordeum spontaneum, a Genetic Resource for Crop Improvement in Cold and Arid Regions

Food security in cold and arid regions in the world is threatened by stressful and unpredictable environments.The sus-tainable and economically viable solution for increasing stability of food productivity in cold and arid regions is genetic improvement of crops towards high resistance to abiotic stresses,mainly cold and drought resistance.It is often empha-sized that crop genetic improvement lies in exploiting the gene pools of the wild relatives of the crop plant.Wild barley,H.spontaneum,the progenitor of cultivated barley,is a selfing annual grass of predominantly Mediterranean and Irano-Turanian distribution that penetrates into desert environments where it maintains stable populations.Wild barley is also found in cold regions,such as in Tibet.The adaptation of wild barley to the arid region in Israel and Jordan,and the cold region in Tibet has accumulated rich genetic diversities for drought,salt,and cold resistances in wild barley,which is the genetic resource for barley and other crop improvement in arid and cold regions.These genetic diversities are revealed by allozymes,DNA-based molecular markers,and morphological and physiological traits of wild barley plants.Quantita-tive trait loci(QTLs) related to drought resistance were identified in wild barley via the QTL mapping approach.Drought resistance genes such as dehydrins,hsdr4,and eibi1 were identified in wild barley based on the candidate gene approach,gene differential expression approach,and molecular genetic approach,respectively.Genetics and genomics of wild bar-ley cold resistance have not been exploited yet,remaining a huge treasure for future crop improvement of cold resistance.Advanced backcross QTL analysis,the introgression libraries based on wild barley as donors,a QTL approach based on wide crosses using wild barley,and positional cloning of natural QTLs will play prevailing roles to help us understand the molecular control of cold and drought tolerance.Integration of QTL information into a breeding pipeline aimed at im-proving tolerance t     

干旱区绿洲化、荒漠化研究的进展与趋势

  干旱区绿洲化、荒漠化是两个反向发展而又相互联系的过程。近60 a来,我国绿洲化面积从20世纪50年代后期的2.5万km²扩大到10.4万km²,沙漠化土地面积由5.3万km²扩大到11.4万km²,受盐渍化危害的耕地面积达到1.5万km²,占总耕地面积的30%。绿洲化优化了局地生态环境,扩大了人类的生存空间,但绿洲低水平、无序的开发使绿洲稳定性下降,同时引发包括荒漠化在内的一系列生态环境问题。通过对绿洲化、荒漠化研究进展的综述,提出了围绕几个关键科学问题近期需要开展的主要研究内容和总体思路,努力在全面认知人类活动与气候变化作用下水、土、气、生过程及其相互作用的基础上,揭示绿洲化、荒漠化过程及其演变机理,为综合评价环境变化趋势和效应以及调控对策与管理模式的研究,提供科学依据。     

基于GIS西北干旱区荒漠化危险度的研究

研究区为我国西北干旱区,在行政区划上包括新疆、甘肃、青海、内蒙古、宁夏和陕西6个省、自治区,涉及西北6省的213个县、市、旗,其面积约占西北六省的71．8％．采用的数据包括气象数据、各类环境统计数据、社会、经济人口数据、1：400万的基础地理数据及NDVI数据。在吸取前人研究成果的基础上,结合研究区的实际情况,确定了影响西北干旱区土地荒漠化危险度的评价指标体系。根据这一评价体系,建立了荒漠化危险度综合评价模型,从自然气候条件、内在危险性、土地现状和社会经济活动四个方面对研究区土地荒漠化危险度进行了评价。结果表明,整个研究区荒漠化程度较为严重——研究区内以中度荒漠化、荒漠和轻度荒漠化为主,其中轻度和中度荒漠化在研究区内均有广泛分布：重度和极重度荒漠化主要分布在荒漠的周围：潜在荒漠化主要分布在阿尔泰山、天山等高大山系的山麓以及内陆河流域流经的地方。