重庆城市绿化与夏季气候舒适度研究

选择日最高气温、相对湿度和平均风速为评价夏季气候舒适度的指标，运用模糊综合评判方法定量描述了重庆夏季气候舒适度状况；讨论了城市绿化对夏季气候舒适度的影响机制；提出大力发展城市绿化，建立完整的园林绿地系统是改善重庆夏季炎热小气候环境的重要途径。     

南充地区主要灾害性天气与太阳活动关系的探讨

根据南充地区多年灾害性天气资料（１９５１—１９９１年）与太阳黑子资料（１９００－１９９１年），对南充地区主要灾害性天气与太阳活动的关系进行了初步探讨，发现南充地区的严重夏旱发生在太阳活动的上升时期，而严重伏旱、春旱、秋绵雨及洪涝大多出现在太阳活动的下降时期．     

Humid medieval warm period recorded by magnetic characteristics of sediments from Gonghai Lake,Shanxi, North China

Variations in monsoon strength, moisture or precipitation in eastern China during the MWP reflected by different climatic records have shown apparent discrepancies. Here, detailed environmental magnetic investigations and mineralogical analyses were conducted on lacustrine sediments of Core GH09B1 (2.8 m long) from Gonghai Lake, Shanxi, North China, concerning the monsoon history during the MWP. The results demonstrate that the main magnetic mineral is magnetite. The sediments with relatively high magnetic mineral concentrations were characterized by relatively fine magnetic grain sizes, which were formed in a period of relatively strong pedogenesis and high precipitation. In contrast, the sediments with low magnetic mineral concentrations reflected an opposite process. The variations of magnetic parameters in Gonghai Lake sediments were mainly controlled by the degree of pedogenesis in the lake drainage basin, which further indicated the strength of the Asian summer monsoon. The variations in the and S 300 parameters of the core clearly reveal the Asian summer monsoon history over the last 1200 years in the study area, suggesting generally abundant precipitation and a strong summer monsoon during the Medieval Warm Period (MWP, AD 910–1220), which is supported by pollen evidence. Furthermore, this 3–6-year resolution environmental magnetic record indicates a dry event around AD 980–1050, interrupting the generally humid MWP. The summer monsoon evolution over the last millennium recorded by magnetic parameters in sediments from Gonghai Lake correlates well with historical documentation (North China) and speleothem oxygen isotopes (Wanxiang Cave), as well as precipitation modeling results (extratropical East Asia), which all indicate a generally humid MWP within which centennial-scale moisture variability existed. It is thus demonstrated that environmental magnetic parameters could be used as an effective proxy for monsoon climate variations in high-resolution lacustrine sediments.     

气候变暖对吕梁农业的影响

介绍了吕梁的地理环境和气候概况,分析了1960—1999年吕梁气候变暖的主要特点,探讨了气候变暖对吕梁农业的影响。     

浅谈特殊环境施工中工程机械设备和油品的选用

在公路施工中，由于气候条件、施工环境恶劣，容易出现机械设备在特殊环境下启动困难、设备零部件磨损加快、设备动力不足、功率下降等现象，究其原因，与机械设备的选型及油品的选用有着很大的关系。怎样选择经济适用的机型与油品．是摆在施工队伍和资产设备管理人员面前的一大难题。     

九顶山旅游气候资源评价

利用地面气候资料，对九顶山东坡绵竹市、什邡市、木瓜坪和西坡凤仪镇四地的气候资源进行了定量计算分析．结果表明，九顶山山麓最佳旅游季节为夏季，东坡最佳旅游时间为5-9月，西坡最佳旅游时间为7-9月，东西坡冬季都偏冷，全年没有酷暑，非常适合开展避暑旅游。     

古里雅冰芯中小冰期以来的气候变化记录

依据年代模型恢复了以δ１８Ｏ和积累量作为替代指标的冰芯中自小冰期以来的温度和降水量序列，以及冰雪中的化学成分序列．所有这些资料都不同程度揭示了青藏高原环境演化过程的事实．尤其是对重要气候事件的解释上，上述指标都以其特有的形式和特点给出了可靠的证据．     

泥炭记录的近2 200年吉林省敦化盆地的气候变化

根据典型泥炭剖面孢粉图示、粒度分布(纤维含量)、pH、沉积速率、吸湿水、C/ N、有机质含量等指标的综合分析,结合地层特征,研究了2 200 a B.P.以来的晚全新世敦化盆地植被和气候的变化.结果表明:敦化大桥泥炭地是从山地森林演替为草甸,继而经沼泽化形成;周围植被经历了以松林(Pinus)为主的温带山地针叶林,桦(Betula)、榛(Corylus)、胡桃(Juglans)等阔叶树和松林共生的针阔混交林,以榛、鹅耳枥(Carpinus)、松为主的针阔混交林和松、桦为主的针阔混交林之后,渐渐进入现代景观;相应地,该区气候经历了四个时期,即冷干((2 045±70)B.P.)～(2 195±70)a B.P.)、暖湿((1 745±70)a B.P.～(2 045±70)a B.P.)、温湿((705±70)a B.P.～1 745±70)a B.P.)和冷湿(公元1245-1950年)时期.     

中国西北地区生态环境的演变及治理策略

西北地区是我国生态环境最脆弱的地区.为了顺利发展西北地区经济,探讨了西北地区生态环境的演变,客观分析了西北生态逐步恶化的原因,进而提出了开发西北必须以生态建设为重点的可持续发展战略.