人工增雨综合技术研究

"人工增雨综合技术预研究"项目对人工增雨云水资源的开发潜力、人工增雨的科学模型及其数值模拟、人工增雨监测识别技术、人工增雨催化作业技术、人工增雨外场试验的科学设计和南方夏季对流云人工增雨潜力区识别技术等方面进行了综合研究,在此基础上初步优选和集成了人工增雨成套技术,并在抗旱型和蓄水型人工增雨外场试验中进行了初步应用,取得了较好的实用效果.     

Overview of the MITI Nankai Trough Wells: A Milestone in the Evaluation of Methane Hydrate Resources

Abstract. Bottom-simulating reflectors suggestive of the presence of methane hydrates are widely distributed below the ocean floor around Japan. In late 1999, drilling of the MITI Nankai Trough wells was conducted to explore this potential methane hydrate resource and a Tertiary conventional structure. The wells are located in the Northwest Pacific Ocean off Central Japan at a water depth of 945 m. A total of six wells were drilled, including the main well, two pilot wells, and three post survey wells at intervals of 10–100 m. All wells except the first confirmed the occurrence of hydrates based on logging-while-drilling, wire-line logging and/or coring using a pressure and temperature coring system in addition to conventional methods. Based on the various well profiles, four methane hydrate-bearing sand-rich intervals in turbidite fan deposits were recognized. Methane hydrates fill the pore spaces in these deposits, reaching saturation of up to 80 % in some layers. The methane hydrate-bearing turbiditic sand layers are less than 1 m thick, with a total thickness of 12–14 m. The bottom depth of high hydrate concentration correlates well with the depth of the bottom-simulating reflector. Based on these exploration results, the Japanese government inaugurated a 16-year methane hydrate exploitation program in 2001.     

特种遗产资源研究基本问题--中国世界遗产与国家公园研究形势与任务

特种遗产是本文对世界遗产与国家公园认定、保护、保存、展示和遗传后代的科学研究所作的理论概括,同时界定了特种遗产与特种遗产资源的概念,讨论了中国的特种遗产———世界遗产与国家公园研究形势,提出了特种遗产资源研究的8个基本问题。     

旅游资源开发灰色模式识别及适宜性分析--以涞源风景区为例

分析旅游资源适宜采用何种开发模式是旅游规划中的重要基础工作。基于灰色系统数学理论，本文构建了一种模式识别方法，应用于旅游资源的适宜性分析及开发模式研究，文中阐述了具体的方法及计算公式，并以河北涞源景区为对象进行了验证。     

利用盐湖卤水制取氢氧化镁的技术探索

我国盐湖中蕴藏有丰富的有色金属资源，在开发过程中．对镁资源的利用不够．造成资源浪费。探索生产氢氧化镁产品的可行性工艺．合理开发盐湖镁资源．实现盐湖资源的综合利用，具有重大的意义。     

Integrating Natural Resource Management for Better Environmental Outcomes

Severe problems of fragmented policies and uncoordinated implementation undermine natural resource management in Australia. There have been promising signs of progress through activities such as the National Forest Policy, Council of Australian Government water reforms, National Land and Water Resources Audit, the Murray‐Darling Basin initiative and the National Action Plan for Salinity and Water Quality to integrate resource policies. There have also been some notable successes at State and local level. But fragmentation endures. This paper provides evidence of the enduring problem of fragmentation and presents a framework to analyse Australia's experience in natural resource management. The analysis reveals the multi‐dimensional character of the problems and identifies a diverse set of actions that need to be taken to improve integration in policy and implementation. Particular attention is given to the potential for regional programs to contribute to improved integration and NRM.     

The cultural context of forest degradation in adjacent Purépechan communities, Michoacán, Mexico

Recent changes in the cultural and forest landscapes of the Meseta Purépecha in Michoacán, Mexico as a result of forest degradation underscore the complexity of forest change processes in the tropical highlands of Latin America. Differences in community perception and forest structure and composition between the furniture-making and lumber-producing towns of Pichátaro and Sevina, Purépechan indigenous communities located amidst pine forests on Michoacán's volcanic plateau illustrate the dynamics of this process. We base our comparisons on interviews and field measures of forest structure. Our results show dramatic changes in the forests and cultural landscapes of both communities during the past decade. Following high regional timber exports during the early 1990s, Sevina shifted from a self-sufficient to a timber importation community. By comparison, communal forests and individual parcels in Pichátaro continue to provide wood for approximately 300 wood shops. Field data and forest stand maps confirm the perception of forest degradation in both communities. While Pichátaro has maintained a larger and more diverse forest base to date, stand structure data indicate selective harvesting has led to a shift in dominance toward the less economically desirable pine species and oak. Deforestation and degradation of Sevina and Pichátaro's community forests are symptomatic of both the Meseta Purépecha and Mexico in general. Current forest conditions in both communities justify local, regional, and national concerns regarding declining biodiversity and sustainable economies.     

非金属矿产开发中存在的问题及对策

阐述了我国非金属矿产开发过程中存在的体制、产品结构、深加工技术及矿山环境等问题，并进行了相关的讨论。在此基础上，从可持续发展的角度出发，提出了我国21世纪非金属矿开发的对策。     

保护煤炭资源 建设小康社会

煤炭是我国主要能源。无论过去、现在、还是未来，煤炭在我国能源市场的重要地位都不可动摇。煤炭资源安全牵系着国家能源战略安全，直接影响到国民经济的可持续发展。新世纪，在全球性能源危机面前，中国实行全面的节能增效与减灾政策，是保障国家能源安全的必然选择。影响煤炭资源安全的因素，存在于煤炭工业的各个环节，对资源的科学管理，是减灾保煤，降耗增效的关键。     

浅析GIS在岩溶地区公路建设土地利用中的应用

在岩溶地区公路建设中，受复杂地形地貌的影响，将不可避免地产生占用耕地、破坏植被等环境问题，使得岩溶地区本来就脆弱的生态环境日趋恶化。因此，合理利用土地资源，维护生态平衡，将成为岩溶地区公路建设必须考虑的重要议题。在文中结合岩溶地区公路建设的实际情况，利用先进的GIS技术，针对公路建设的不同阶段，分别提出了各种不同的技术手段和工程措施，既指导了岩溶地区的公路建设．也保护了有限的土地资源。