石门台自然保护区水资源及其利用保护

介绍了广东英德市北部山区石门台自然保护区的自然地理条件、水文效应、水资源特点及其开发利用现状 ,提出对水资源的保护管理措施 ,促进自然环境良性循环 ,促进水资源可持续利用和社会经济发展。     

青海省盐湖钾、镁、锂盐资源开发利用探讨

论述了青海省盐湖资源中钾、镁、锂盐工业的资源状况、生产现状以及开发利用的迫切性 ,并对钾、镁、锂盐资源的综合利用进行了探讨     

腾格里沙漠地区盐湖钾盐资源特征

腾格里沙漠地区盐湖众多 ,以沉积石盐和芒硝为主 ,并赋存有丰富的晶间卤水 ,卤水中K+含量较高 ,在调查的 1 7个盐湖中有 1 2个盐湖KCl含量达到综合利用品位或工业边界品位。通过地质调查、遥感及航空γ能谱测量资料解译 ,本区多数盐湖具有相似的成钾条件 ,形成 4个成钾远景区 ,具有一定的找钾前景     

干旱区水土资源时空变化的定量研究

水资源是制约干旱区土地资源开发利用的主要自然因素，水、土资源利用在时间和空间上平衡与否的矛盾影响着干旱区生态环境与社会发展。用定量化的数学模型表示二者的互相影响，能描述、解释和预测二者关系并能为制定对策提供依据。本文首先分析了干旱区土地利用与水资源的相互影响，然后对水土资源相互影响下时空变化的模拟方法和理论进行了综述。一方面从蒸散的计算、模拟地下水补给、模拟区域尺度上土地利用影响、模拟土地管理措施影响、模拟抽取地下水影响、以系统方法模拟土地利用影响等几方面对土地利用影响下水资源的时空变化模拟进行了综述。同时对水资源影响下土地利用变化的模拟从主要考虑水文作用的水文－植被模型的建立应用及引入人为因素为驱动力的土地利用变化模拟两方面做了综述。文章最后进一步概括了干旱区水土资源时空变化模拟的趋势并就此方面的研究提出了三点展望意见。     

Research progress of socio-economic water cycle in China

China has made great progress in the study of socio-economic water cycle. She has completed national water resources appraisement and medium to long-term water supply planning. She has been engaging in study on water-deficient regions in North China and Northwest China for about half a century. For solving water shortage problem in northern China, she has put forward the famous South-to-North Water Transferring Projects, which has been set as one of the four biggest national projects in the Tenth Five-Year-Plan period although there are still debates. For promoting water use efficiency, China has been reforming her water management system, including water right system and water price system. There has already been a case of water right purchase. China has also done a lot of research on the interaction between human activity, water and ecosystem. For meeting the need of sustainability and coordinating water resources development and environmental protection, the study of ecological water requirement became very hot in recent years. There are three focuses of socio-economic water cycle study now in China: water transfer projects from the south to the north, water resources management and ecological water requirement.     

Global heat budget, plate tectonics and climatic change

For the past 2000 Ma, the temperature of the Earth's surface has fluctuated around a mean similar to that of today, although individual locations have undergone long-term changes of ∼30°C at different times in different places. Water bodies absorb at least five times as much solar radiation as land surfaces, and ocean currents transport the excess heat absorbed in the tropics towards the poles. Changes in the distribution of land and sea due to plate tectonics explain the major temperature fluctuations (>25°C) around the globe in the last 350 Ma, and are first-order controls. Large-scale changes in ocean currents and thermohaline circulations are probably second-order controls (15–25°C). The Milankovitch orbital cycles are third-order controls producing variations in air temperature of the order of 10°C, while massive volcanic eruptions and changes in carbon dioxide are amongst the fourth-order controls producing minor perturbations (<5°C). The major climatic fluctuations are continuous but regional in effect and not global. Extraterrestrial factors may not cause major changes in climate when viewed from a geological perspective.     

中国劳动力资源配置区域差异分析

区域经济发展和经济结构调整的关键在于劳动力资源的合理配置。中国各省市区劳动力资源的产业和行业分布具有显著的地域差异，在空间分布上东、中、西部具有差异，西部地区的西南和西北地区也存在差别，这种规律反映了我国经济发展和产业结构高级化的区域差异。根据劳动力行业配置的区位熵排序结果，将各省市区分成4种类型：大都市型、沿海高工业化水平型、中等工业化水平型、中下等工业化水平型。这些类型具有自东向西有规律性的分布，与我国的经济发展格局和工业化水平的东西差异相应。     

高山增水效应及其水资源意义

根据高山上云、雾、雨、雪、径流等水资源丰富现象，分析了高山冰川、植被、地形等与汽-水作用关系，提出高山增水效应概念和高山区水资源开发与保护的新思路。高大山体及其造成的垂向对流、高山冰川和高山植被共同作用形成了高山增水效应，并形成良性增水系统。山体愈高大，增水效应愈明显。对内陆干旱地区开发利用更多的高山水资源具有意义。     

省级空间信息基础设施建设的意义及途径--以西藏自治区为例

省级空间信息基础设施建设是实现信息化资源、经济、环境管理的基础,但省级空间信息基础设施发展是一项具有战略性的巨型系统工程,跨区域、跨部门、跨学科,其建设和部署必须有统一的领导和安排。文章以西藏自治区为例,根据西藏自治区目前信息化发展现状,探讨了西藏自治区省级空间信息基础设施建设的途径及意义,认为西藏省级空间信息基础设施建设的第一步是提出项目建设的框架及规划,其次根据信息化发展现状及投资力度,制订近期、中长期目标及建设内容,然后根据规划分阶段实施。最后文章讨论了西藏实施省级空间信息的重要意义,为实现西藏电子政府、指导区域经济发展提供依据。     

Impact of climate change and variability on water resources in Heihe River Basin

Studies indicate that the climate has experienced a dramatic change in the Heihe River Basin with scope of temperature rise reaching 0.5-1.1oC in the 1990s compared to the mean value of the period 1960-1990, precipitation increased 18.5 mm in the 1990s compared to the 1950s, and 6.5 mm in the 1990s compared to the mean value of the period 1960-1990, water resources decreased 2.6×108 m3 in the 1990s compared to the 1950s, and 0.4×108 m3 in the 1990s compared to the mean value of the period 1960-1990. These changes have exerted a greater effect on the local environment and socio-economy, and also made the condition worsening in water resources utilizations in the Heihe Rver Basin.