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901.
Impact of Climate Change on Possible Scenarios for Egyptian Agriculture in the Future 总被引:1,自引:0,他引:1
El-Shaer H. M. Rosenzweig C. Iglesias A. Eid M. H. Hillel D. 《Mitigation and Adaptation Strategies for Global Change》1997,1(3):233-250
If no timely measures are taken to adapt Egyptian agriculture to possible climate warming, the effects may be negative and
serious. Egypt appears to be particularly vulnerable to climate change because of its dependence on the Nile River as the
primary water source, its large traditional agricultural base, and its long coastline, already undergoing both intensifying
development and erosion. A simulation study characterized potential yield and water use efficiency decreases on two reference
crops in the main agricultural regions with possible future climatic variation, even when the beneficial effects of increased
CO2 were taken into account. On-farm adaptation techniques which imply no additional cost to the agricultural system, did not
compensate for the yield losses with the warmer climate or improve the crop water-use efficiency. Economic adjustments such
as the improvement of the overall water-use efficiency of the agricultural system, soil drainage and conservation, land management,
and crop alternatives are essential. If appropriate measures are taken, negative effects of climate change in agricultural
production and other major resource sectors (water and land) may be lessened.
This revised version was published online in August 2006 with corrections to the Cover Date. 相似文献
902.
减少农业甲烷排放的技术选择 总被引:1,自引:1,他引:1
林而达 《生态与农村环境学报》1993,(Z1)
文章总结了温室气体甲烷的最新研究进展,包括:甲烷对全球变暖的贡献,甲烷的排放机理以及优先研究的领域;估算了我国农业甲烷排放的贡献:中国约占世界人工源甲烷排放量的10.48%,其中农业排放占一半以上;根据实验结果,提出了筛选低排放水稻品种、水分管理、施肥管理、改进饲料、使用添加剂和生长调节剂、改进遗传、促进繁育等减少稻田和反刍家畜甲烷排放的若干技术选择。 相似文献
903.
A fully non-linear analysis of forcing influences on temperatures is performed in the climate system by means of neural network modelling. Two case studies are investigated, in order to establish the main factors that drove the temperature behaviour at both global and regional scales in the last 140 years. In particular, our neural network model shows the ability to catch non-linear relationships among these variables and to reconstruct temperature records with a high degree of accuracy. In this framework, we clearly show the need of including anthropogenic inputs for explaining the temperature behaviour at global scale and recognise the role of El Niño southern oscillation for catching the inter-annual variability of temperature data. Furthermore, we analyse the relative influence of global forcing and a regional circulation pattern in determining the winter temperatures in Central England, showing that the North Atlantic oscillation represents the driven element in this case study. Our modelling activity and results can be very useful for simple assessments of relationships in the complex climate system and for identifying the fundamental elements leading to a successful downscaling of atmosphere–ocean general circulation models. 相似文献
904.
立柱无土栽培研究初报 总被引:6,自引:1,他引:6
立柱无土栽培研究初报龚颂福,李止正(中国科学院上海植物生理研究所上海200032)关键词立柱无土栽培;蔬菜;花卉STUDIESONTHESOILLESSCULTURESONVERTICALCOLUMNS¥GongSongfuandLiZhisheng... 相似文献
905.
Florian Rabitz 《环境政策》2019,28(3):502-522
ABSTRACTTechnologies for Solar Radiation Management (SRM) could limit global warming by manipulating the Earth’s radiation balance. A major objection to SRM is the termination problem: the catastrophic consequences that are likely to result from its sudden discontinuation. The termination problem limits the reversibility of policy choices and poses the risk of inadvertent or enforced program collapse. It is often considered a major impediment to the governability of SRM. In a first attempt to systematically engage with the question of institutional design for resolving the termination problem, the scenarios in which the termination problem arises as well as their respective drivers are identified. Scenarios and drivers are then used to derive institutional solutions in the form of excludable benefits, scientific oversight and phase-out mechanisms. While other objections to SRM may remain valid, it is concluded that the termination problem raises fewer challenges for international governance than is usually assumed. 相似文献
906.
Katharina Rietig 《环境政策》2019,28(2):228-247
ABSTRACTEuropean climate policy faced increasing constraints during the economic and Eurozone crises (2008–2014). The European Commission subsequently refocused policymaking toward integrating climate objectives into other policy areas such as energy and the 2014–2020 European Union (EU) budget. The conditions for successful climate policy integration (CPI) are analyzed, focusing on the compatibility of key actors’ beliefs. In renewable energy policy, CPI was successful as long as the co-benefits and related policy-core beliefs of energy security, rural economic development and climate action coexisted harmoniously. Once conflict among these policy-core beliefs emerged during the biofuels controversy, CPI was weakened as actors with competing economy-focused beliefs controlled the decision-making process. The case of EU budget climate mainstreaming illustrates how actors can add climate objectives into legislation despite meaningful discussion being ‘crowded out’ by other priorities. The findings highlight the importance of low conflict between departments, compatible beliefs and policy priorities for successful CPI. 相似文献
907.
Diarmuid Torney 《环境政策》2019,28(6):1124-1144
ABSTRACTThe past decade has seen the introduction of framework climate change laws in several countries. The development of climate laws in two small European states, Ireland and Finland, both of which introduced national climate laws in 2015, are examined. Two questions are addressed. First, to what extent do later adopters of climate policy instruments draw on the examples of pioneering legislation? Second, how and why are pioneering climate policy instruments modified by later adopters? In both cases, the 2008 UK Climate Change Act was a source of inspiration in the early stages, particularly for civil society campaigns. Thereafter, domestic interests mobilised to remove from legislative proposals the most pioneering and ambitious parts of the UK model. The result, in both cases, was enactment of climate laws that resembled only very loosely the UK Climate Change Act. 相似文献
908.
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910.
概述了竖向隔板分油法、蜂窝斜管分油法及磁性颗粒吸附过滤法 ,将这 3种方法结合处理某机修厂的含油污水 ,取得了满意效果。 相似文献