倡导绿色建筑,构筑资源节能型社会

本文比较系统地介绍了绿色建筑的内涵、特点、发展现状和趋势等,为构筑资源节能型社会提供参考依据。     

Least-inference methods for constructing networks of trophic flows

The construction of material and energy budgets within ecosystems has long been accomplished via manual calculation. Recently, optimization techniques have been adapted to automate the procedure, but these methods require assumptions that may not square with biological reality. Two algorithms are developed to construct ecosystem budgets under minimal inference. Although the methods do not recapitulate the model used to generate the input data, analysis reveals that the results do not differ statistically from networks that were constructed manually.     

新老建设项目环境保护管理法规对照分析

最近颁布的《建设项目环境保护管理条例》,使我国环境影响评价制度在法制化的轨道上又向前迈进了一步,对我国环境影响评价工作的开展将产生重大影响。本文就原《建设项目环境保护管理办法》与新条例作出分析比较。