我国能源消费结构变化与气候特征   总被引：9，自引：1，他引：9       下载免费PDF全文

袁顺全  千怀遂 《气象科技》2003,31(1):29-32

文章利用多项式法将气候耗能量从能源消费总量中分离出来，用统计分析的方法探讨了气候耗能量与气候因子之间的关系及其变化。研究表明：从20世纪50年代到80年代初期，旱涝灾害是影响我国气候耗能量的主要气候因子，它们之间存在显著的线性相关关系，随着经济的发展和人民生活水平的提高，旱涝灾害对气候耗能量的影响逐渐减弱，气温对气候耗能量的影响日趋显著，目前正处于过渡时期。  相似文献   

气象科技服务的当前形势分析     

熊文兵  周能 《气象研究与应用》2003,24(2):61-63

从市场的角度介绍国内外气象科技服务的现状,分析我国气象科技服务存在的问题和面临的形势,提出应对策略和建议。  相似文献   

酒店气象专用电视频道技术方案     

郑虹晖  尹群  翁锦辉 《气象研究与应用》2003,24(3):50-52

阐述了酒店气象专用电视频道的工作原理,同时还推荐了本系统软硬件具体的配置,最后对专用系统软件的工作流程及其使用方法进行了详细的说明。  相似文献   

数字遥测地震台网数据管理与服务系统(MASS系统)的系统方案     

单德华  蒋秀琴  李广平  范叶平  杨红艳  魏柳 《地震地磁观测与研究》2003,24(5):64-69

介绍了基于Internet／Intranet标准的数字遥测地震台网数据管理与服务系统(MASS系统)通过互联网信息发布实现的方案。该方案采用Windows2000server和ⅡS5．0平台，利用ASP技术和脚本语言JavaScript，VbScript及HTML技术，响应浏览器端的动态请求，实现诸如数据管理、数据服务和在线评比等功能，并根据用户请求完成波形数据和相应处理软件的下载。  相似文献   

黄海中部近海海域海洋气象预报服务系统     

徐良谋  郭根华 《气象科学》1997,17(1):83-88

本文在多年试验研究的基础上，研制了一套较为完善的黄海中部近海海域海洋气象预报服务的专门系统，本系统可进行海上大风、海水表层温度、以及风浪预报，并具备海上天气的实时监测和动态决策服务的能力。  相似文献   

冬小麦水分耗散特性与农业节水   总被引：6，自引：0，他引：6  

吴凯  陈建耀 《地理学报》1997,52(5):455-460

本文根据中国科学院禹城综合试验站１９８６年－１９９６年蒸渗仪农田水分模拟试验资料统计；冬小麦全生育期耗水量可达４８２．５ｍｍ，缺水率可达６９．３％；冬小麦全生育不分耗散过程有两个明显的需水峰区和３个关键需水期，为实施节水灌溉提供了实验依据；冬小麦耗水量与环境因子有明显的相关关系，其统计规律可供地下水浅埋区区域灌溉预测参照应用。  相似文献   

THE LIFE-CYCLE OF MINERAL CONSUMPTION IN REGIONAL DEVELOPMENT AND ITS IMPLICATION     

Zhang Lei Institute of Geography  CAS  Beijing People''s Republic of China 《地理学报(英文版)》1997,(2)

Ｉ.ＩｎｔｒｏｄｕｃｔｉｏｎＴｈｒｏｕｇｈｏｕｔｈｉｓｔｏｒｙｍｉｎｅｒａｌｓｈａｖｅｂｅｅｎａｄｅｔｅｒｍｉｎａｎｔｆａｃｔｏｒｉｎｔｈｅｅｖｏｌｕｔｉｏｎｏｆｓｏｃｉｅｔｉｅｓａｎｄｃｉｖｉｌｉｚａｔｉｏｎ.ＴｈｅｖｅｒｙｏｂｖｉｏｕｓｉｍｐａｃｔｏｆｍｉｎｅｒａｌｓｏｎＭａｎ’ｓｅｖｏｌｕｔｉｏｎｃａｎｂｅｔｒａｃｅｄｉｎｔｅｒｍｓｏｆＭａｎ’ｓａｃｑｕａｉｎｔａｎｃｅｗｉｔｈｍｉｎｅｒａｌｓ—ｔｈｅＰｒｅｓｔｏｎｅＡｇｅ,ｔｈｅＳｔｏｎｅＡｇｅ,ｔｈｅＢｒｏｎｚｅＡｇｅ,ｔｈｅＩｒｏｎＡｇｅ,…  相似文献   

PELIMINARY ANALYSES FOR CROP WATER CONSUMPTION BY USING LYSIMETER     

Chen Jianyao Wu Kai Institute of Geography  CAS  Beijing People''s Republic of China 《地理学报(英文版)》1997,(3)

Ｉ.ＩｎｔｒｏｄｕｃｔｉｏｎＴｈｅＨｕａｎｇ-Ｈｕａｉ-ＨａｉＰｌａｉｎｉｎＮｏｒｔｈＣｈｉｎａｉｓａｃｒｕｃｉａｌａｒｅａｉｎｐｒｏｖｉｄｉｎｇａｂｏｕｔｏｎｅ-ｆｉｆｔｈｏｆｔｏｔａｌｓｔａｔｅｆｏｏｄ[4],ａｎｄｉｔｉｓｆａｃｉｎｇａｓｅｒｉｏｕｓｗａｔｅｒｓｈｏｒｔａｇｅｉｎｒｅｃｅｎｔｙｅａｒｓｄｕｅｔｏｔｈｅｅｘｐａｎｓｉｏｎｏｆｉｎｄｕｓｔｒｙａｎｄａｃｏｎｔｉｎｕｏｕｓｄｅｃｒｅａｓｅｉｎｐｒｅｃｉｐｉｔａｔｉｏｎ.Ｔｈｅｓｔｕｄｙｉｎｓｏｉｌ-ｐｌａｎｔ-ａｔｍｏｓｐｈｅｒｅｃｏｎｔｉ…  相似文献   

Sustainable management of a coastal lagoonal system (Ria Formosa, Portugal): An ecological model for extensive aquaculture     

S. Gamito 《International Journal of Salt Lake Research》1997,6(2):145-173

The Ria Formosa lies in southern Portugal, extending for about 55 km. It is a true barrier island system, comprising mainland, backbarrier lagoons, inlet deltas, barrier islands, barrier platforms and shoreface. Of the Ria Formosa system, which covers a total area of 163 km², 20 km² are occupied by salinas and aquaculture ponds. The main water reservoir of thesalinas and the extensive aquaculture ponds behave like small lagoons where there are one or more openings to a tidal channel. These small lagoons have the advantage of being easy to study and to model. An ecological model was developed to estimate the potential production of the gilthead seabream in the Ria Formosa, in an extensive aquaculture regime. This model was based on information concerning chemical and physical factors (forcing functions) and secondary production estimates from four sites in the Ria Formosa with different environmental conditions, where extensive aquaculture is practised. Published information on optimal growth parameters of the gilthead was used to build the model, which was based on some assumptions concerning the detrimental effect of an excessive increase of salinity and other environmental factors both on gilthead growth (one state variable) and on prey production (divided into two state variables), which is essentially benthic macrofauna. Reservoirs with low water renewal undergo large environmental fluctuations. The growth of gilthead or other fish can be difficult, not only because of the adverse environmental conditions but also because of the low secondary production. The maximum yield of fish is predicted to be less than 6 g m⁻². In reservoirs where the water exchanges on almost every tide, the maximum yield of gilthead can be in excess of 22–25 g m⁻². Nevertheless, the high productivity of these sites in terms of secondary production of benthos and fish, as well as primary production, can lead to oxygen depletion during the night or at day-break. An attempt to further improve fish production by fertilisation or by adding food could provoke a rapid deterioration of the water quality and endanger all production.  相似文献   

中国硫的供求现状和展望   总被引：1，自引：0，他引：1  

范可正  林乐 《化工矿产地质》1996,18(4):317-324

从工业和农业两个方面供需现状分析，中国目前硫的供需基本平衡，且供略大于求。展望２０００年，中国硫的供求关系将出现缺口，需进一步开拓硫的潜在资源。从总体上看，目前中国土壤供硫情况尚好，但一些地区已开始出现缺硫和严重缺硫的状况，预测今后土壤缺硫状况将会加剧，希望各有关部门对此应给予充分注意  相似文献