再论西安地裂缝的时空观及现实意义

本文依据西安地裂缝的时空观，讨论了地裂缝的发展趋势、地裂缝的对策等热点问题，提出融西安地裂缝研究于广阔的时空环境中、正确评价其微观形态，是深化西安地裂缝研究的唯一正确之路。     

沈阳区域环境空气中一氧化氮与二氧化氮时空分布规律

以沈阳区域环境空气监测分析结果为依据 ,分析了 1 994～ 1 998年内空气中一氧化氮与二氧化氮时空分布状况及其变化趋势     

Nodes,networks, and MUMs: Preserving diversity at all scales

The present focus of practical conservation efforts is limited in scope. This narrowness results in an inability to evaluate and manage phenomena that operate at large spatiotemporal scales. Whereas real ecological phenomena function in a space-time mosaic across a full hierarchy of biological entities and processes, current conservation strategies address a limited spectrum of this complexity. Conservation typically is static (time-limited), concentrates on the habitat content rather than the landscape context of protected areas, evaluates relatively homogeneous communities instead of heterogeneous landscapes, and directs attention to particular species populations and/or the aggregate statistic of species diversity. Insufficient attention has been given to broad ecological patterns and processes and to the conservation of species in natural relative abundance patterns (native diversity).The authors present a conceptual scheme that evaluates not only habitat content within protected areas, but also the landscape context in which each preserve exists. Nodes of concentrated ecological value exist in each landscape at all levels in the biological hierarchy. Integration of these high-quality nodes into a functional network is possible through the establishment of a system of interconnected multiple-use modules (MUMs). The MUM network protects and buffers important ecological entities and phenomena, while encouraging movement of individuals, species, nutrients, energy, and even habitat patches across space and time. An example is presented for the southeastern USA (south Georgia-north Florida), that uses riparian and coastal corridors to interconnect existing protected areas. This scheme will facilitate reintroduction and preservation of wide-ranging species such as the Florida panther, and help reconcile species-level and ecosystem-level conservation approaches.     

高架复合道路交通噪声时空分布规律研究

通过对杭州市典型高架复合道路交通噪声监测,研究高架复合道路交通噪声的时空分布规律。结果表明,噪声与车流量、车辆类型及车速密切相关;噪声随着与高架路距离的增大,地面各测点的噪声值呈递减趋势;高架复合道路平直段与下坡路段的噪声在临街建筑竖直立面的分布规律基本一致,但在不同高度的影响程度上存在一定差异。     

城市“热岛”的时空分布特征与盛夏防暑降温对策

从城市“热岛”形成的原因和时空分布的特征出发 ,探讨了夏季城市防暑降温所应该采取的措施。