我国现阶段应采取的节水措施

文中提及我国现阶段节水工作要从提高新水资源利用率入手，在进行节水宣传教育的同时，建立能动的节水机制，充分利用宝贵的降水资源，发挥可利用新水资源最大的效率，为我国未来经济社会的发展创造有利的条件。     

利用合成氨二段转化气联产甲醇技术的可行性分析

通过对国内外不同甲醇合成生产工艺技术概况及能耗指标的分析，探讨合成氨化肥企业利用现有工艺技术进行改造的可行性，以提高企业对市场的适应性。     

浅谈海上油井安全阀及其控制系统技术的应用

针对实际生产条件，为全面推行海上安全环保、节能与清洁生产，在油井上安装了太阳能安全阀控制系统，对油井生产与安全管理起着重要的作用。     

浅析我国水资源与水污染治理现状

从我国水资源的贫乏,部分地区水资源的浪费和主要水流域污染的日益加剧等方面描述了我国水资源的现状,对水污染的治理提出了对付策略.     

Sustainable resource management coupled to resilient germplasm to provide new intensive cereal–grain–legume–livestock systems in the dry savanna

Sustainable resource management is the critical agricultural research and development challenge in sub-Saharan Africa. The accumulated knowledge on soil management gathered over the last 10 years, combined with solid crop improvement and plant health research at farmers’ level, has brought us to a stage where we can now address with confidence the intensification of cereal–grain–legume-based cropping systems in the dry savanna of West Africa in a sustainable and environmentally positive manner.Two sustainable farming systems that greatly enhance the productivity and sustainability of integrated livestock systems have been developed and implemented in the dry savanna of Nigeria. These are: (i) maize (Zea mays L.)–promiscuous soybean [Glycine max (L.) Merr.] rotations that combine high nitrogen fixation and the ability to kill large numbers of Striga hermonthica seeds in the soil; and (ii) miflet [Eleusine coracana (L.) Gaerth] and dual-purpose cowpea [Vigna unguiculata (L.) Walp.]. Improvement of the cropping systems in the dry savanna has been driven by the adoption of promiscuously nodulating soybean varieties (in particular TGx 1448-2E) and dual-purpose cowpea. The rate of adoption is very high, even in the absence of an efficient seed distribution system. The number of farmers cultivating the improved varieties increased by 228% during the last 3 years. Increased production of promiscuous soybean has been stimulated by increased demand from industries and home utilization. Production in Nigeria was estimated at 405,000 t in 1999 compared to less than 60,000 t in 1984. Economic analysis of these systems shows already an increase of 50–70% in the gross incomes of adopting farmers compared to those still following the current practices, mainly continuous maize cultivation. Furthermore, increases in legume areas of 10% in Nigeria (about 30,000 ha in the northern Guinea savanna) and increases of 20% in yield have translated into additional fixed nitrogen valued annually at US$ 44 million. This reflects, at the same time, an equivalent increase in land-use productivity, and with further spread of the improved crops, there are excellent prospects for additional economic and environmental benefits from a very large recommendation domain across West Africa.     

Climate Change and Energy Technologies

The long time scale of the climate change problem and the inherent nature of the carbon cycle bring important implications for present technology development efforts. Even if major technology improvements are achieved for non-carbon-emitting technologies such as energy-intensity improvements, wind, solar, biomass, and nuclear over the course of the 21^st century, most examinations of potential future greenhouse emissions conclude that additional technology development will be required to stabilize greenhouse gas concentrations. The evelopment of an expanded suite of technologies including carbon capture and disposal, hydrogen systems and biotechnology hold the potential to dramatically reduce the cost of stabilizing greenhouse gas concentrations. This paper examines these technologies in the context of a global integrated assessment model of energy, agriculture, land-use, economics, and carbon cycle processes.     

微藻对水网藻在水体修复中的胁迫作用研究

通过单独与混合培养实验,结果显示在适宜营养水平下,水网藻对氮、磷有较强的富集吸收能力;而来自微藻生长竞争的压力会促使水网藻对营养物的生态幅变窄,满足其最佳生长所需要的PO43-P从0.085mg/L降低为0.024mg/L;并且其富集磷的能力也大为降低。在利用水网藻进行富营养化水体修复或净化水质时,这种生物之间的抑制现象必须引起重视。     

华东地区重点成矿区带实现矿产资源勘查突破的思考与建议

华东地区是我国钨、铜、铁、金、银铅锌多金属、铀等产业基地,区内分布的重要成矿区带有南岭锡、钨、铅锌成矿带(华东地区主要包含其东段-赣南地区)、武夷山铜、铅锌多金属成矿带和长江中下游铁、铜、(硫)金成矿带。此外,作为扬子、华夏两大地质板块的交接部位-钦杭接合带,铜、铁、稀有金属等也显示出巨大的找矿潜力。本文对该区矿产资源勘查工作进行了系统分析,提出了实现华东地区矿产资源勘查重大突破的建议与对策。     

中国红树林湿地资源及其保护

红树林是我国海岸湿地类型之一，自然分布于海南、广西、广东、福建、台湾等省区。现有面积约1．5万hm^2，包括26种真红树，11种半红树。中国红树林湿地直接经济价值不高，而防浪护岩、维持海岸生物多样性和渔业资源、净化水质、美化环境等生态环境功能显，属于特别容易被价值低估的海岩生态关键区。1960年代以来的毁林转海造田或盐田，毁林围塘养殖，毁林围海搞城市建设等人类不合理开发活动，使红树林面积剧减，环境恶化，红树林湿地资源濒危，急需加强管理和保护。现已建成各级红树林自然保护区18个，还需要吸收科学家积极参与，加强科学研究和宣传教育，以尽快扭转退化趋势，实现红树林湿地生态系统的恢复和可持续发展。     

阜新市工业废水污染现状及防治对策

文中对阜新市的水环境现状和存在的主要环境问题进行了系统分析，提出了解决城市工业废水污染问题和措施。并针对水资源严重匮乏地区的经济与环境协调发展问题，进行了研究和探讨。