关于环境气候学教育的若干问题

在阐述联合国及我国政府对环境气候问题的高度重视以及环境气候学内容中当前普遍关心的若干重大问题的基础上，论证了环境气候学在整个环境科学中的地位和开展环境气候学教育的必要性；并根据这一新的交叉学科所表现的特点和我国的实际情况，就开展这门学科教育的具体实施办法。

树轮δ^(13)C趋势地区差异的初步研究

比较了新疆昭苏地区、阿勒泰地区和青海祁连地区 3棵树树轮碳同位素组成的长期趋势 .研究发现 ,新疆昭苏和青海祁连序列有较为相似的趋势 ,而均与新疆阿勒泰序列有明显的不同 .分析表明 ,树轮δ13 C序列趋势之间的地区差异主要与树轮δ13 C的“林冠效应”有关 .说明在利用树轮碳同位素序列来重建大气 CO2 中的δ13 C变化历史时应选择森林郁闭度低或树冠伸出了整个林冠的树木样品 .

Paleosols from North Part of Barlad City （Romania）

The loess deposits comprise several paleosol layers reflecting alternation of drier and wetter climate during Quaternary. Such a situation occurs in north of Barlad, on The Sohodau＇s Hill. Morphological study of the quarry paleosols from north of Barlad was accomplished based on field observations and macroscopic physic-chemical results. Three levels of paleosols with variable thickness were determined. These three fossils layers are interbedded by four loess deposits. The physical-chimical data provide important information for the paleosol genesis and depositional/climatic environments. The carbon content and C/N ratio indicate the strength of pedogenesis in the Pleistocene and trends of biomass accumulation.

“人造树”有效减缓全球变暖

你是否曾经想象过这样的场号：在上班的道路两旁．“人造树”沿两边排开．办公楼外墙的管道里种植着藻类．屋顶能够将热量反射回空中——这些措施可以减少全球变暖效应。