Titlebook: Indicators of Environmental Quality; Proceedings of a sym William A. Thomas (Group Leader) Conference proceedings 1972 Springer Science+Bus

矛盾

Indicators of Environmental Quality: an Overview,se questions, we first must consider exactly what we include in the term “environment.” If we restrict our consideration to overly simplified definitions, such as the amount of a specified pollutant in air, we have very little difficulty in measuring environment. However, as we broaden our definitio

Gourmet

沖突

Uses of Environmental Indices in Policy Formulation,nt, where emotions can run high, hard facts are often of critical importance. If we are to achieve effective management of our environment, we will need comprehensive data about the status and changes in the air, water, and land. Optimally, these data should be organized in terms of indices that in

ostracize

Evaluation of Natural Environments,nce on the planet. I define “natural environment” as any place where organisms exist in mutual relations that are free of direct management or other drastic human intervention; but presence or absence of people is not a criterion. Plant succession is a key concept for recognizing the vast number and

痛恨

Irksome

flourish

強(qiáng)制令

拖債

Biochemical Indicators of Environmental Pollution,about 100 years ago of the effect of sulfur dioxide on the vegetation surrounding smelters; and to the observation,. around the turn of the century, of the effect of pollutants on the population of flora and fauna living in natural waters. Since that time, our knowledge of the biological effects of

FRAUD