【摘 要】
：
Quaternary aeolian environment researches were mainly conducted by analyzing the information carri-ers, extracting valuable evidences about aeolian environment
【机 构】
：
China Center of Desert Research, Key Laboratory of Environmental Change and Natural Disaster
论文部分内容阅读
Quaternary aeolian environment researches were mainly conducted by analyzing the information carri-ers, extracting valuable evidences about aeolian environment changes, so to presume and reconstruct paleoenviron-ments. This paper formulated progress in Quaternary aeolian environment research using dune-morphological records,sedimentological records and bio-fossils records, as well as advances about chronology; presented that people shouldpay more attention to further synthetic study of multi-types of records including dune morphology, size, formationtime, sediment supply, and their relations with wind regime in future, especially the research on dating method.
其他文献
It has been well studied that the γ-function explicit method can be effective in providing favorable numerical dissipation for linear elastic systems. However,
Based on analysis of mechanisms causing energy no-closure and nocturnal low fluxes issues for CO2 exchange studies by eddy covariance method, corrections were d
Pacific Decadal Oscillation (PDO) is a long-term ENSO-like variability of the North Pacific. It is the first principal component of EOF of the North Pacific SST
According to the data of 146 coal samples measured by mercury penetration, coal pores are classified into two levels of ＜65 nm diffusion pore and ＞65 nm seeping p
In order to evaluate the soil erosion rate for different land uses and make recommendations on land-use alternatives for erosion control in hilly and mountain a
Nitrogen is one of the major plant nutrients without which the agricultural production is not possible. Nitrogen use in Indian agriculture was nearly 55000 tons
物权行为是德国法的创造,即以设立、变更、消灭物权为目的的行为。我国法律理论中的民事法律行为与德国的法律行为的内涵相去甚远。由于长期以来理论和实务界对物权行为和债
自从公共行政学诞生以来,行政官僚的自由裁量权一直是其研究的重要内容.从公共行政的发展历史来看,新公共管理运动兴起以后,政府被要求更加及时和灵活地对民众关注的问题进行
科学发展观是发展中国特色社会主义必须坚持和贯彻的重大战略思想。而绩效评估是检察机关开展规范化建设的必由之路和持续发展的动力源泉。当前,探索绩效评估体系是检察机关
本文从实证主义角度,结合当前检查机关监所检查监督工作实际,集中分析了监所检察中存在的如执行程序欠缺相关法律依据、羁押期限规定不尽合理等立法不足问题,并提出了有关的